EP3973603A1 - Procédé et dispositifs ou système de montage, de déplacement et/ou de démontage de câbles ou d'autres charges utiles de forme linéaire - Google Patents

Procédé et dispositifs ou système de montage, de déplacement et/ou de démontage de câbles ou d'autres charges utiles de forme linéaire

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Publication number
EP3973603A1
EP3973603A1 EP20727229.5A EP20727229A EP3973603A1 EP 3973603 A1 EP3973603 A1 EP 3973603A1 EP 20727229 A EP20727229 A EP 20727229A EP 3973603 A1 EP3973603 A1 EP 3973603A1
Authority
EP
European Patent Office
Prior art keywords
empty
pipe
buoyancy
payload
transport pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20727229.5A
Other languages
German (de)
English (en)
Inventor
Werner Spiegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3973603A1 publication Critical patent/EP3973603A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
    • H02G1/086—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling using fluid as pulling means, e.g. liquid, pressurised gas or suction means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor

Definitions

  • the present invention relates to a method with devices for buoyancy-assisted laying of cables to enable the laying of extremely long cable sections or other linear payloads and media pipes in a multifunctional empty pipe transport pipe system.
  • the method and the devices advantageously provide a system for assembling, laying and / or dismantling cables or other linear payloads.
  • connection points joint locations between the individual cables laid, which have to be labor-intensive with expensive and, according to the state of the art, still failure-prone connection sleeves (joint fittings) so that the electricity can be supplied later can flow without interruption.
  • connection sleeves With an economic point of view, and for safety reasons, it is therefore particularly desirable if the total number of connection sleeves, with which individual cables are connected, can be kept as low as possible, since such failure-prone connection sleeves thus always represent permanent weak points in the power transmission system, avoiding or the reduction in numbers is desirable and consequently the number of expensive construction sites and construction roads for heavy goods vehicles for the transport and for the laying of cables can be kept as low as possible.
  • conduits e.g. B. by lubricants or by special surface design of the conduits (e.g. corrugated conduits), which are intended to reduce the friction between the cable and conduit when pulling in, but which, for example, are not very suitable or length-limiting for pulling in heavy cables over longer pull-in lengths.
  • An implementation concept such as is required for the expansion of the transfer network in floch voltage direct current transmission technology (FIGÜ), should be flexible, sustainable - meaning reversible, environmentally friendly and, moreover, subject to low financial risks.
  • High point head station including the units according to the invention and devices for hydrodynamic drag force generation according to the descriptions for FIGS. 2a and 2b.
  • Method step c1) providing a role system for the
  • Method step c2) Production of the payload transport pipe string, if necessary. also its extension to produce empty pipe sections LLX of any length in accordance with the descriptions relating to FIGS. 7b, 7c, 7d and 7e
  • staggered relocation of the sections according to method step e according to the invention essentially only the repeated provision of the low point head station by offsetting it into the area LLM of the previous through station according to the descriptions for FIGS. 8c, 8 and 9 is required.
  • the method and the devices advantageously provide a system for assembling, laying and / or dismantling cables or other linear payloads.
  • the present invention is based in particular on the knowledge that the use of the physical effect of lift (A) can be supplemented by a hydrodynamic drag force effective in the empty pipe.
  • the solution according to the invention thus goes beyond the prior art, in particular according to DE 10 2013 102 631 B4.
  • a hydromechanically generated towing power support (8) experience during the laying process, which, acting on the total outer surface (pipe circumference x pipe length) of the payload transport pipe string (2), over the entire Retraction length (LL) remains in effect until the target position is reached in the empty pipe system (1).
  • a payload transport pipe length maximization as shown in Fig. 7e is conceivable and possible, which is characterized in that individual cable lengths (LK) (transport lengths) on site with factory socket or splicing technology, as used to create virtually endless submarine cables Is used, connected and the assembly process takes place accordingly step by step, in particular without having to change the target shaft position (4d).
  • the feed system (Fig. 7a) and the insertion shaft (4a) can advantageously continue to be used without changing position and thereby costs for dismantling and rebuilding the feed system (12) and costs for moving the entire flochpoint head station (4a) including the Devices (6), (6a) and (6b) according to the invention can be saved.
  • the main advantage of this embodiment according to the invention, in particular of the method according to claim 10, is that failure-prone sleeves and a corresponding number of sleeve locations and structures can be saved and at the same time more security for power transmission can be promised.
  • the diameter of the transport tube (d2), and thus the effective buoyancy (A) is primarily due to the respective weight (G) of the payload transport tube -String (2) and the density of the buoyancy and transport medium (7) used (mounting medium), the inner diameter (d1) of the empty pipe fulfilling the requirement that the total cross-section of the payload transport pipe string (2) is within the empty pipe (1 a) during the introduction process in a water-filled annulus remains freely movable over the entire intake length and at the same time the pump-driven buoyancy and transport medium (7) with its hydrodynamic drag force (8) can drive the payload transport pipe string (2) in the target direction.
  • the empty pipes (1) to be laid according to process step a are preferably designed as pressure pipes, on the one hand to absorb the static pressure of the buoyancy and transport medium (7) in geodetic low points of the empty pipe course and on the other hand to absorb the additional hydraulic internal pressure in the pipe that is associated with the Provision of the hydrodynamic drag force (8) according to the invention is associated.
  • the kinetic energy of the buoyancy and transport medium (7) in the annular space is generated by means of at least one feed pump, preferably a high-point pump (13a) as described in relation to FIGS. 2a and 2b, which generates the required volume flow in the direction of the target position (4d) and opposite the static pressure in the high-point gravity shaft (4a), an additional hydraulic internal pressure in the pipe and thus a pressure gradient in the empty pipe (1a) that is effective as a drag force.
  • a feed pump preferably a high-point pump (13a) as described in relation to FIGS. 2a and 2b
  • the pressure gradient between the pump pressure nozzle (7a) and the empty pipe section (truck) that is effective for the towing force up to the pulling head of the payload transport line (2) generates a hydromechanical drag force (8) on the outer surface of the payload transport tube, the size of which depends on the pressure gradient, the mass flow in the annulus and depends in particular on the effective pipe surface, i.e. the pipe circumference times the pipe length in the empty pipe (Pi x d2 x truck) of the payload transport pipe string (2).
  • it is a turbulent annulus flow, which can act as a friction force on the entire pipe surface of the payload transport pipe string (2) in a particularly effective and energy-efficient manner if the surface of the payload transport pipe is particularly large.
  • the surface of the payload transport tube is considerably larger than, for example, the surface of a cable -that is, that of the payload itself- and, since the payload transport strand (2) with the internal cable, is virtually weightless in the buoyancy and transport medium (7) (A minus G «zero), it can be pulled or pushed into the conduit (1a) like an elongated submarine by means of hydrodynamic towing force (8), free of tensile stress for the cable itself.
  • feed pumps (13 a) and / or (13 b) and / or pressure increasing pumps can be installed at any point within the empty pipe section LL. , are used, in principle all in the system-integrated recirculation and pressure increasing pumps also bring about an increase in the hydrodynamic drag force (8) and at the same time the absolute pressure level can be reduced if several pumps are combined and / or staggered over the entire recirculation section of the empty pipe system (1) to generate the drag force, for example according to claim 7 to be ordered.
  • interconnected hydromechanical boosters stations with corresponding pressure increasing pumps similar to (13a) and devices similar to (6) and (6a), shown in Fig. 3f, staggered over the total length LL of the empty pipe system (1), enable the pulling in of extremely long payload transport pipe strings (2), also through staggered hydromechanical drag force generation.
  • this hydromechanical towing force (8) has a particularly advantageous effect in non-straight line sections, because there it acts as a pushing force, as it were, pushing outwards and thus the frictional forces induced by tensile forces on the inside of the arch between the empty pipe and the payload -Transport pipe, as shown in Fig. 1a, reduced in the area of an arc of curvature in the empty pipe course LL.
  • the method according to the invention therefore also improves the possibilities of planning and realizing meandering routes, which has advantages in particular in the case of preferably tube-based cable laying, since with the method according to the invention, compared to other methods, long cables or payload transport pipe strings (2) are also included in such routes.
  • the lowest possible tensile forces can be drawn in and laid without the remaining tensile forces acting on the cable (3) itself thanks to the completely tension-free storage in the transport tube (2).
  • a buoyancy and transport medium (7) Mounting medium
  • FIGS 2a and 2b The process sequence in process steps a to e for laying the payload transport pipe string (2) according to the invention - in particular by forcing the buoyancy and transport medium (7) to pass through by means of feed pumps (13) and generating a hydrodynamic drag force - is as shown in FIGS 2a and 2b shown and described, preferably carried out in a resource-saving manner by circulating the buoyancy and transport medium.
  • a second available empty pipe (1b) can be used, as is the case with HV power transmission systems, or for this purpose a pipe or hose connection between the bottom outlet of the low point head station (4d) and the high point head end (4a) are provided.
  • a pure continuous flow without recirculation is also advantageous if the buoyancy and transport medium (7) is sufficiently available in the sense of claim 1.
  • the payload transport pipe string (2) 2 can also be moved back and forth during the insertion process, which indicates the reversibility of the method according to the invention, with which the dismantling of the cable transport pipe string (2) can also be achieved at any later point in time with the method steps and devices according to the invention.
  • the pumps (13b) and (13a) are preferably surrounded to reverse the direction of flow of the buoyancy and transport medium (7).
  • the total length LL of the empty pipe exceeds the length of the individual payload transport pipe string LK by a multiple, and in particular a staggered laying according to claim 9 takes place in subsections, advantageously according to a combination according to one or more of claims 1 to 5 of the present invention.
  • a payload transport pipe string (2) in method step c2 is particularly useful when heavy high and extra-high voltage cables are to be laid in particularly long sections.
  • the payload transport pipe string (2) is preassembled outside the empty pipe according to the description of FIG. 7b and FIG Low-resistance and free of tensile force for the cable (3) or media pipe, to be laid or positioned in the empty pipe with the aid of buoyancy and hydrodynamic drag-force support.
  • the cable (3) to be laid is first unwound from a carrier reel (cable reel (3a)) onto a roller system (12), which in process step c1 according to the description 7a is provided in order to facilitate the pulling out or the longitudinal distortion of the elements cable (3), the transport pipe long sections (2b) and finally the longitudinal distortion of the entire preassembled payload transport pipe string (2) and to prevent damage to the cable (3) prevent.
  • the individual plastic transport pipe long sections (2b) can be joined together in different ways, either by means of a two-part welding mirror with a recess and thermally insulated and secured distance to the cable (pliers principle) or preferably using the electric welding process with integrated heating coils so that a Transport pipe string (payload transport pipe string (2a)) that completely envelops the cable is created, which is preferably closed tightly and with tensile strength at both ends with pulling heads (2a) after completion in preparation for the leak test.
  • thermal insulation or by integrated Heating coils such as those used in the Simofuse process, prevent damage to the internal cable (3) from the welding process when the transport pipe sections are joined.
  • the long transport pipe sections (2b) can also be joined in a tensile and watertight manner using electric welding sleeves, as is described in patent specification DE 10 2013 102 631.
  • a hydromechanical towing force (8) is additionally transmitted via the buoyancy and transport medium (7) in the pull-in direction during the pull-in process (method step d2) to the outer jacket of the payload transport tube (2) and according to the invention and in particular at least one feed pump, preferably a high point pump (13a) - preferably supported by a low point pump (13b), in particular according to claim 4 and optionally additionally supported by hydromechanical booster stations, in particular according to claim 5, as well as sealing devices according to the invention for Press seal, such as Dichtu ngshunt (6) and overpressure circumferential seal (6a) as well as sealing devices (6b) for the retraction rope seal, in particular according to claim 2 and / or claim 3, shown in FIGS.
  • buoyancy and Transport medium (7) in the annulus -between empty pipe (1a) and payload transport pipe strand (2) - during the insertion process advantageously at the same or greater speed than the insertion speed of the payload transport pipe strand (2) in the pull-in direction as shown in FIGS Descriptions of Fig. 2a and Fig. 2b compulsorily promote.
  • the resulting hydrodynamic drag forces (8) act from the passage of the traction head (2a) through the sealing element (6a) according to descriptions of FIGS. 2a and 2b, over the length of the truck Payload transport pipe string (2) relieves tension over the entire pull-in length LL.
  • this is preferably achieved with a high-point pump (13a) as a delivery and pressure-increasing pump, which is able to generate a delivery flow in the annular space in the feed direction.
  • This is achieved according to the invention by means of at least one overpressure sealing device, a sealing chamber (6) with overpressure circumferential seal (6a), according to the descriptions of FIGS.
  • the overpressure sealing device is preferably designed as a sealing chamber (6) and is preferably connected to the antechamber (5) of the empty introductory tube (1a) in the insertion assembly shaft with exchangeable sealing element (6a).
  • the antechamber (5) of the empty introductory pipe is equipped with a pressure connection (7a) for the pump connection of the high-point pump (13a).
  • the device for the overpressure circumferential seal (6a) for the payload transport pipe is necessary to maintain the hydrodynamic drag force (8) over the total length LL to be equipped with a further sealing function, in particular according to claim 3, or preferably to provide an additional sealing device (6b), in particular according to claim 2, which also enables the retraction rope (9b) carried along, which is attached to the retraction head (2a) of the payload transport pipe string ( 2) is attached, which prevents a short-circuit flow of the buoyancy and transport medium (7) even after the end of the entire payload transport pipe string (2) has passed through the overpressure circumferential seal (6a).
  • this is preferably achieved by means of a shutter slide which, on the one hand, allows the maximum payload transport tube diameter (d2) to pass through at maximum opening and, on the other hand, can be closed to such an extent by manual or automated operation that the The remaining minimum opening cross-section corresponds approximately to the cross-section of the retraction rope (9b).
  • a diaphragm slide (6b) has the advantage that the opening cross-section always remains centered and the retraction cable (9b) is also centered without it being pinched during the cross-sectional constriction.
  • An additional low-point pump (13b) is preferably connected as a recirculation pump to the antechamber in the area of the low-point station, which in turn is able to generate a negative pressure in the empty intake pipe (1 a) and thus increase the hydrodynamic drag force (8) in the draw-in direction and on the Pump pressure side, the recirculation of the buoyancy and transport medium (7) in the direction of the insertion assembly shaft (4a) is ensured.
  • the low point head station (4d) side recirculation pump (13b) is also for the reversal of the pulling-in process, so to speak for the pushing out of the payload transport pipe string (2) by means of hydrodynamic towing support, which is achieved by enclosing the pressure and suction side of the low-point pump (13b).
  • This fulfills the reversibility criteria for the assembly process and is therefore a further safety aspect and advantage for the method according to the invention.
  • the standard configuration of the method according to the invention provides that the payload transport pipe string (2) is equipped with two pulling heads (2a), i.e. also with a pulling head as described in particular in DE 10 2013 102 631 B4, with the option of connecting a pulling rope (9b ), which on the one hand has a previously described safety function and, on the other hand, with an advantageous staggered laying of several payload transport pipe strings (2) in extremely long empty pipe sections as shown in Fig. 8, for the retraction of the pull rope (9a) through the empty pipe (1a) to the roller system (12) for the renewed provision of the pull rope (9a) for the pulling-in process of the next payload transport pipe string (2) into the empty pipe sections LLX.
  • the exemplary occupancy and feed sequence for a segmented empty pipe system would be according to FIG. 8 and FIG. 9: 1. empty pipe 1a in section Lu, 2. empty pipe 1b in section Lu; then moving the low point station (4b), 3rd empty pipe 1 a in section LL2, 4th empty pipe 1 b in section LL2, etc. to 8. Empty pipe 1 b in section LL4.
  • a roller-based transport system (12) with devices is preferably used to transmit the advance in an advantageous embodiment of the process according to the invention used as shown in Fig. 7a, with which the above-ground longitudinal transport of the preassembled payload transport pipe string (2) is facilitated in process step d2.
  • the longitudinal transport system (12) for the payload transport pipe string contains devices that essentially consist of support rollers and scaffolding elements, which are preferably put together to form a type of rolling scaffold or roller conveyor.
  • Longitudinal transport systems (12) guided by crash barriers are to be preferred if z. B. lead empty pipe routes along or within existing trunk road routes, using the existing side guard rail systems.
  • modified roller attachments are advantageously used, in particular according to claim 12 of the present invention, in the function corresponding to that of the devices (12a) and (12b), characterized in that they can be attached to or on the existing guardrails of the roads .
  • the feed system (12) including the pulling devices (10a) and (10b) for pulling in the payload transport pipe string (2) is ready for the longitudinal transport in process step d2, as well as the high point head station (4a) and low point head station (4d) including the hydromechanical units, the feed pumps (13a) and (13b) and devices for the overpressure seal (6), (6a ) and (6b) are operational for process steps d1 and d2, the prerequisites for carrying out process step d2 are created in process step d1, and for this purpose the buoyancy and transport medium (7) in the amount that corresponds to the empty pipe system volume, preferably in containers or tank trucks , which can also be used as a buffer (18).
  • the empty pipe system is flooded and filled with the buoyancy and transport medium (7) in process step d1 after connecting the feed device (19) for the buoyancy and transport medium (7) and after connecting the assembly flange tube (15) and inserting the pulling cable Sealing device (16), which during the pulling in of the payload transport pipe string (2) seals the pull rope (9a) against the system overpressure or system negative pressure, which prevails in the area of the low point head station (4d) in the relevant empty pipe string (1 a) can, so the empty pipe system (1) seals both against water leakage and against air entry within the low point head station (4d).
  • the system pressure in the conduit section (1a) depends on the static pressure head, in particular on the suction head of the low point pump (13b) and the overpressure generated by the high point pump (13a), as well as on the delivery rates of the pumps (13a and 13b) and the associated volatile pressure losses in the empty pipe string (1 a), which correlate with the hydrodynamic drag force.
  • the assembly extension piece (15) designed as a multifunctional assembly flange pipe and assembly closure of the empty pipe (1 a) within the low point head station (4d), marks the target position for the traction head (2a) of the payload transport pipe on the assembly path. Strand (2) in the flooded empty pipe section.
  • the multifunctional assembly extension piece (15) fulfills the function of closing the empty pipe (1a) against the pressure of the empty pipe system flooded with the buoyancy medium.
  • the dismantling is preferably carried out after emptying the empty pipe system (1) and the associated pressure relief.
  • the assembly dismantling piece (15) is preferably equipped with a combined drainage and filler neck with shut-off valve, via which the emptying and filling of the empty pipe system (1) as well as the exchange, recirculation and pumping off or knocking off the buoyancy and transport medium ( 7) can preferably take place in the buffer (18).
  • the end of the payload transport pipe string (2) is equipped with pulling heads (2a), a pulling head and a pulling head, as described in connection with FIG. 7d.
  • the pulling heads (2a) of the payload transport pipe string (2), the multifunctional assembly flange pipe (15), as well as floch point (4a) and low point head station (4d) are advantageously designed to be removable and can therefore advantageously be reused. After the assembly is completed, they are replaced by hydraulic terminations (HEV), thus closing the respective empty pipe and payload transport pipe end.
  • HEV hydraulic terminations
  • 4 preferably insertion devices with support, guide and deflection rollers (12a and 12b) for forced guidance used in such a way that the minimum bending radii of the payload transport pipe string (2) in the area of the front shaft (4b), the shaft connecting elements (4c) and in the area the high point head station (4a), maintained during the insertion process and at the same time the effective feed force within the high point head ation (4a) can be transferred in the axial direction of the payload transport pipe string (2) until the empty pipe axis (1 a) is reached.
  • the inventive buoyancy-assisted and hydromechanical towing force supported laying and assembly processes can advantageously be used reversibly and therefore allows the removal of the cable (3) or the media pipe or the payload transport line (2), advantageously with the same method according to the invention, but in the reverse assembly mode, the reversal of method step d, especially for the purpose of replacing cables or media pipes at a later date.
  • the method according to the invention and the use of the devices according to the invention for the buoyancy-assisted laying of cables or media pipes with hydromechanical towing force in a multifunctional empty pipe transport pipe system offer various other advantages:
  • functional, safety, environmental and thermal monitoring devices and ITC cables can also be laid in the payload transport pipe string (2) during production, the pre-assembly of a payload transport pipe string (2) in process step c2.
  • the empty pipe payload transport pipe system is a double pipe heat exchanger and can, for. B. be used for the purpose of waste heat utilization or for the purpose of active cooling heat-generating cables, as described in particular in DE 10 2013 022 347 B3 and / or in DE 10 2015 101 076 A1, advantageously supplemented by devices according to claim 13.
  • the empty pipeline construction allows correspondingly smaller trench widths or slot widths or building line widths compared to the usual line widths for the construction of high-voltage lines and, according to the inventive concept, it can advantageously also be used within or to the side of traffic routes, streets and highways as well as on and on bridge structures, as is the state of the art in pipeline construction for other media pipes (e.g. gas, drinking water, sewage), especially when the basic requirements for narrow routes are created, e.g. B. through active cooling of the cables with cooling media, which allow the dissipation of the heat loss caused by the power transmission from the conduit / cable transport pipe system.
  • media pipes e.g. gas, drinking water, sewage
  • assembly shafts are used, which are dismantled again after the assembly process according to process steps a to d and by so-called hydraulic end closures (HEV), similar to DE 10 2015 101 076 A1 which will permanently separate the water-bedded part of the cable routing from the cable routing on the earth or air side in the area of the socket pits during later operation.
  • HEV hydraulic end closures
  • 1a shows a schematic top view of a right-angled empty pipe course (1a) through which a payload transport pipe string (2) (here representing an air-filled cable transport pipe with an internal extra-high voltage cable) according to DE 10 2013 102 631 is drawn.
  • a payload transport pipe string (2) here representing an air-filled cable transport pipe with an internal extra-high voltage cable
  • FIG. 2a shows a schematic representation of the pull-in method according to the invention by means of hydrodynamic towing force support (8) at the beginning of method step d2, in which the entire cross-section of the payload transport pipe string (2) with the payload (3) enclosed therein - for example a high voltage cable - over a support, guide and deflection pulley system (12) is introduced into an empty pipe (1a), sliding through an overpressure circumferential seal (6a) according to the invention.
  • the overpressure circumferential seal (6a) in the function of an annular space seal, is a device that prevents a short-circuit flow between the overpressure prechamber (5a) and the gravity mounting shaft (4a) when an overpressure of the high-point pump (13a) arranged according to the invention is reached via the pressure side (7a) Buoyancy and transport medium (7) is generated in relation to the pressure level in the gravity assembly shaft (4a) in the overpressure prechamber (5a), to which the hydrodynamic drag force (8) according to the invention on the payload transport pipe string (2) in the empty pipe (1 a) capable of generating.
  • a second pump a low point pump (13b) can be used as a recirculation pump, with which the drag force effective pressure gradient between the overpressure prechamber (5a) in the gravity installation shaft (4a) and the prechamber 5b in the low point head station (4d) is increased accordingly .
  • a negative pressure can advantageously be generated on its suction side and in front of the payload transport pipe string (2) in the empty pipe (1a) and the absolute pressure level on the pressure side (7a) of the high point pump (13a) can be lowered to provide the hydrodynamic drag force.
  • the drag force between the overpressure pre-chamber (5a) at the entry of the payload transport pipe string (2) into the empty pipe (1 a) and the suction side (5b), generated jointly by the high point pump (13a) and the low point pump (13b) ) the low point pump (13b) could not be built without the annular space seal (6a) according to the invention.
  • the respective suction side of the pumps (13a) and (13b) is hydraulically separated by the closed shut-off valves (14) from the respective pressure side both in the gravity installation shaft (4a) and in the low point head station (4d) to avoid short-circuit flows.
  • the low point pump (13b) fulfills the important function of increasing the pressure, in particular if, for example, the parallel payload transport pipe string (2) is already in the Empty pipe 1 b is laid as shown in FIG. 8 and the entire recirculation mass flow is also supposed to return, rich in pressure loss, through the annular space in the empty pipe (1 b) along the fixed payload transport pipe string (2) to the gravity assembly shaft (4a), if this is the case to limit the absolute pressure level in the empty pipe system and to divide the overcoming of the total pressure losses advantageously between two pumps (13a) and (13b) and to limit the pressure difference (overpressure) with which the annular space seal (6a) is loaded.
  • Fig. 2b is a schematic representation of the pull-in method according to the invention by means of hydrodynamic towing force support (8), as shown and described in Fig. 2a, but during process step d2, in which the entire payload transport pipe string (2) (length shown greatly reduced) with the enclosed payload (3) - for example a high voltage cable - already completely through the annular space seal (6a) according to the invention in an empty pipe (1a) - the length is shown greatly reduced - is passed, but the target position, the low point assembly shaft (4d) , has not yet been reached.
  • Fig. 3a shows a detailed view from Fig. 2a, with the area of the antechamber (5) to the empty pipe 1a, the sealing chamber (6) with the overpressure circumferential seal (6a) as an annular space seal and the sealing device (6b) for sealing the passage opening for the retraction rope ( 9b), which is opened as described and shown in Fig. 2a (no sealing function) when the passage of the payload transport tube (2) is sealed against the overpressure in the antechamber (5) by the overpressure circumferential seal (6a).
  • FIG. 3b shows a detailed representation from FIG. 2b, with the area of the antechamber (5) for Empty pipe 1a, the sealing chamber (6) with the overpressure circumferential seal 6a as an annular space seal (without sealing function) and the sealing device (6b), in a preferred embodiment as a diaphragm slide with clamping sleeve (6c), in the function of sealing the passage opening for the retraction rope (9b) ), which according to the description and illustration in Fig. 2b is closed except for a minimum cross-section and is implemented when the passage of the retraction rope (9b) is sealed against the overpressure in the antechamber (5) by the sealing device (6) and the end of the Payload transport pipe string (2) has traversed the sealing element (6a).
  • the drag forces (8) relieve tension in the pull-in direction, as described in FIG. 3a, but over the entire length LK of the payload transport pipe string (2).
  • 3c shows a detailed representation of the antechamber (5) to the empty pipe 1a, the sealing chamber (6) with an overpressure circumferential seal 6a according to the invention in another embodiment, the overpressure circumferential seal (6a) according to the invention being designed as a packing seal, for example as a foam packing, which is designed as an annular space seal is dimensioned that when the payload transport pipe passes through
  • connection technique - used according to the invention when laying land cables - is particularly advantageous when using the method according to the invention for laying cables if not only the lift-supported laying according to DE 10 2013 022 347, but the overall method according to the invention, in which a hydrodynamic drag force ( 8) produced according to the invention with a buoyancy and transport medium (7) which can also be used for horizontally and vertically meandering routes where other pipe-based laying methods reach their limits.
  • FIG. 3d matching the process illustration in Fig. 2a, a schematic illustration with the area of the antechamber (5) to the empty pipe 1 a, the sealing chamber (6) with the overpressure circumferential seal (6a) as an annular space seal and the sealing device (6b) for sealing the Passage opening for the retraction rope (9b), but in the embodiment of the sealing element (6a) according to the invention as described in FIG. 3c.
  • cross-section F-F the passage of the payload transport pipe string (2) is shown with the sealing device (6b) open.
  • FIG. 3e matching the process illustration in Fig. 2b, a schematic illustration with the area of the antechamber (5) to the empty pipe 1 a, the sealing chamber (6) with the overpressure circumferential seal (6a) as an annular space seal and the sealing device (6b) for sealing the Passage opening for the retraction rope (9b), but in the embodiment of the sealing element (6a) according to the invention as described in FIG. 3c.
  • the cross section F-F the passage of the retraction rope (9b) is shown with the sealing device (6b) almost closed.
  • 3f is a schematic representation of an assembly for the intermediate sealing of the annular space of an empty pipe (1 a), the function of which is characterized in that the pressure of the buoyancy and transport medium (7) is increased by means of a pressure increasing pump (13) and pump connections to an outlet - (5b) (suction side) and lead to a feed chamber (5a) (pressure side).
  • annular space seal (6a) Via the sealing chamber (6) with an annular space seal (6a), designed for the passage of a payload transport pipe string (2), it is possible to remove the buoyancy and transport medium (7) on the suction side from the empty inlet pipe (1 a) in front of the annular space seal (6a) and fed back into the empty inlet pipe (1 a) on the pressure side behind the annular space seal (6a), the annular space seal thereby fulfilling the function of a closed shut-off valve within the empty pipe (1 a).
  • the annular space seal (6a) is advantageously designed to be exchangeable.
  • FIG. 4 shows a schematic longitudinal section through a high-point head station (4a), designed as a gravity shaft for the buoyancy and transport medium (7) and in the function of an assembly shaft for introducing the payload transport pipe string (2) into the empty pipe system (1) here for example in the empty pipe (1 a).
  • the high-point head station (4a) and the low-point head station (4d) are decoupled from the conduit system (1) after completion of the assembly and after the empty pipe system (1) has been emptied into the intermediate storage device (18) and are similarly decoupled using hydraulic terminations as described in DE 10 2015 101 076, replaced.
  • the high point head station (4a) including the front shaft (4b) and shaft connecting elements (4c) in particular have the function of forced guidance of the preassembled payload transport pipe string (2) by means of a guide and pulley system (12) to overcome a height offset while maintaining the minimum bending radii for the payload transport pipe string (2).
  • the function of the sealing of the antechamber (5) according to the invention by means of the sealing chamber (6), the overpressure circumferential seal (6a) and the sealing device (6b) is shown and described in FIGS. 2a, 2b, 3a and 3b.
  • Fig. 5 shows the process step a, the provision of the empty pipe functionality in the sense of the method according to the invention on the entire laying route LL, including pre-rope pull-in (9e) by means of pulling pig (1 Of) and the segmentation of the empty pipe system into sections LLX (empty pipe sections for cable sections in a much shorter Representation between sections ee and dd) and sections LLM (empty pipe sections that are created by separating the empty pipes (1 a) and (1 b) and creating empty pipe through station (4e) with detachable connections, which are provided for sleeve areas to connect laid cables ).
  • Fig. 6a shows the process step b, the provision of the functionality of the high point head station (4a), the shaft (4b) and the connecting elements (4c), including the high point pump (13a) and devices for the invention hydrodynamic drag force generation, also described and shown in Figures 2a and 2b.
  • Fig. 6b shows process step b, the provision of the functionality of the low point head station (4d) including the low point pump (13b) and devices for recirculation of the buoyancy and transport medium (7) and thus for support the hydrodynamic drag force generation, also described and shown in FIGS. 2a and 2b.
  • LLM designated sections empty pipe sections, also described and shown in Fig. 2a, Fig. 2b and Fig. 5, serve on the one hand to provide through stations (4e) for the passage of the payload transport pipe strings (2) with the inventive method and on the other hand, the provision of socket areas on the corresponding empty pipe length.
  • the pull ropes (9a) are unwound from the pull rope winches (10a) and made available for the later pulling in of the payload transport pipe strings (2) through the empty pipes.
  • 7 a shows the result of method step c1, the feed system provided upstream of the high-point head station (4a) on which the production in method step c2 according to FIGS. 7b and 7c and the longitudinal distortion of the in method step d2 according to FIG. 7d Payload transport pipe string (2) are carried out.
  • the support, guide and pulley system (12 consisting of vertically effective guide elements (12a) and horizontally effective guide elements (12b) for deflecting and guiding a completed payload transport pipe string (2) and, beforehand, the longitudinal distortion of the individual transport pipe long sections (2b) and payload (3), for example an extra-high voltage cable.
  • Further components of the feed system are retraction cables (9b), retraction cable winches (10b), which are preferably provided for one empty pipe each (here empty pipe system (1), exemplified as a two-pipe system consisting of empty pipes 1a and 1b).
  • pull-out and cover cable winches (10c) and a holding cable winch (10d) are provided for process step c2, which, according to FIG.
  • the feed system shown here in a straight line can be adapted to the project requirements in other configurations and designed flexibly, for example also in a helical or meandering manner, with the total length of the feed system being based on the length of the extended payload length with an additional length for at least one long transport pipe (2b) and the length the locking heads (2a) is matched.
  • FIG. 7b and 7c show the sequence of method step c2, the production of the payload transport pipe string (2) -ggfls. also its extension (according to the description and illustration of FIG. 7e, for the generation of empty pipe sections LLX- of any length on the feed system shown and described in FIG. 7a.
  • FIG. 7b the pull-out of a cable (3) from a cable reel (3a) by means of pull-out and cover rope (9c), pull-out and pull-over rope winch (10c) and cable pulling stocking (3b).
  • Fig. 7d shows the completed process step c2 and the preparation for carrying out process step d2, the buoyancy-supported laying of the payload transport pipe string (2) with hydrodynamic towing power support, in which the complete payload transport pipe string (2) on the carrying,
  • the guide and deflection pulley system (12) is still at rest, is provided with the locking heads (2a) and on the one hand the retraction cable winch (10b) via the retraction cable (9b) on the retraction head (2a) and the pull rope (9a) are attached to the pulling head (2a) of the payload transport pipe string (2) in order to initiate the pulling-in process into the empty pipe system (1) (according to FIG. 8).
  • FIG. 7e shows method step c2 of the overall method, similar to the description and illustration to FIGS. 7b and 7c, but in the inventive way compared to DE 102013022347 that the method in this method step, by extending the payload transport pipe string (2) after its partial retraction into the empty pipe 1 a, in which the end of the empty pipe still rests outside the empty pipe on the roller system (12) in order to be subsequently extended before the further drawing-in takes place with the method according to the invention according to method step d2.
  • the extension cable (3) is first, as also shown in Fig.
  • the inventive method of lengthening the payload transport pipe string has the advantage that the repetition of process step d1 can be dispensed with, since process step d2 according to the invention was only interrupted beforehand in order, after the production of the extension of the payload transport pipe string (2) to be continued.
  • FIG. 8a shows the left part of FIG. 8 up to section bb, shown enlarged, from which it can be seen that a high-point pump (13a) moves the buoyancy and transport medium (7) from the high-point gravity shaft (4a) here into the empty pipe 1 b promotes and thus provides the hydrodynamic drag force (8) for laying a payload transport pipe string (2).
  • the retraction rope (9b) is reeled off the payload transport pipe string (2) from the associated retraction rope winch and pulled along in the pull-in direction.
  • FIG. 8b shows the middle part of FIG. 8 between section bb and section cc, shown enlarged, from which it emerges how a payload transport pipe string (2) in the empty pipe 1b through the empty pipe sections LL3, LLM and LL2, which here are used as transit stations, is moved towards the target position (to the right) (process step d2).
  • Fig. 8c shows the right part of Fig.
  • Payload transport pipe string (2) supported.
  • Fig. 8 shows schematically and by way of example the total length of an empty pipe system consisting of sections (LLX and LLM) - in the snapshot of method step d2, for laying a two-pole HVDC cable system in two empty pipes 1 a and 1 b - with the sections LLX greatly shortened therein .
  • 8 also shows the devices for performing method step d1 in the light of the method according to the invention (shown enlarged in FIG. 8c, right part of FIG. 8), with the devices (18) for providing the buoyancy and transport medium (7) (method step d1), with which the entire empty pipe system is flooded before performing method step d2 and which is used for
  • FIG. 8 shows the implementation of the buoyancy-supported laying of the payload transport pipe string (2) with hydrodynamic towing power support at a point in time when a payload transport pipe string (2) is already in the last section LLI of the empty pipe 1a up to its target position is relocated (detail Fig. 8c) and in the empty pipe 1b, the laying process according to the invention of the payload transport pipe string (2) in the target direction LLI is currently being carried out (in Fig. 8b, middle part of Fig. 8, shown enlarged).
  • the continued laying process is carried out according to the illustration and description of FIG. 9 by first removing the buoyancy and transport medium (7) from the empty pipe system is drained or pumped out into the intermediate storage (18) and then the traction cables (9a) are uncoupled, the target shaft (4b) is withdrawn in order to return it to the new, subsequent target position at the end of the section LL2 as shown and described in FIG. 9 to connect to the conduits 1 a and 1 b (section cc) and to bring the cable winches (10a) into position.
  • the pull ropes (9a) are pulled back to the stop location through the conduits 1 a and 1 b by means of the retraction ropes (9 b), which are also decoupled.
  • the empty pipe system (1) can then be flooded again and the laying process as described and continued in the sense of method step e until the laying of the exemplary total of eight payload transport pipe strings (2) in the empty pipe sections LLI, LL2, LL3 and LL4 is complete.
  • the advantage of the method according to the invention is in particular that the assembly devices the high point head station (4a) and the support, guide and deflection roller system (12) for the longitudinal distortion, which is upstream of the high point head station (4a) and the empty pipe system (1) for the production of the payload transport pipe string (2) , do not have to be moved, i.e. can be kept stationary, until the assembly process in section LL4 has been completed.
  • Fig. 9 shows schematically the state of the completed assembly process according to the method according to the invention in the empty pipes 1 a and 1 b in the empty pipe section Lu, which is then hydraulically separated from the empty pipe sections LL2 to LL4 in comparison to the representation in FIG.
  • the exposed cable ends in section Lu in the sleeve areas are also shown schematically, in which the free ends of the cable sections can be connected at a later point in time by means of sleeve fittings, which is not the subject of the method according to the invention.
  • the method according to the invention and the devices according to the invention or the system according to the invention for a low-friction and low-resistance, as well as strain-relieved pipe-based laying of extremely long cables or other linear payloads in extremely long empty pipe or tunnel systems is fundamentally implemented in such a way that it is possible, on the one hand, to Use of the physical effect of buoyancy (A), to combine with the effect of a hydrodynamic drag force effective in the empty pipe to a new type of process, by removing the fundamentally existing disadvantages of length limitations through tensile force limitations, as they are in particular with extremely long route sections and with non-straight routes and exist in hilly terrain, can be further reduced or length restrictions can be omitted entirely, as the schematic comparison of a payload transport pipe string laying through a 90 ° empty pipe bend shows (see FIG. 1 a according to DE1 0 2013 102 631 B4 and the present solution, in particular FIG. 1 b of the present application).
  • 1 conduit system consisting of at least one conduit of length LL, but i. d.
  • the empty pipe system consists of at least 2 empty pipes, this is suitable for the recirculation of the buoyancy and transport medium (7), in which the hydraulic connection of the empty pipes to specially designed assembly shafts (4a) and (4d) via the empty pipe shaft connection piece (1 c ) he follows.
  • Total weight (G) of the payload transport tube string (2) - together with the internal payload (cable (3)) - is equal to the buoyancy (A) of the payload transport pipe string (2) in an empty pipe flooded with a buoyancy and transport medium (7), i.e. (A minus G equals 0) when the remaining internal volume of the payload transport pipe string (2) is filled with air.
  • Closure heads are designed in their further function as tubular elements with a length that, as shown schematically in FIG. 9, corresponds to the desired protruding length of the cable ends, which after Deduction of the locking heads is required in order to be able to establish the cable sleeve connections between two laid cables in the sleeve area (LLM).
  • Production of submarine cable sleeves is used, after completion with approximately the same outer diameter as the cable (3) itself, on a splice length (3d).
  • Factory sleeves are also manufactured on cable-laying vessels, for example, in order to obtain almost endless submarine cables.
  • the production of factory sleeves for the extension of land cables according to the invention is used to extend and connect cables on site, which can advantageously be used in an embodiment of the method according to the invention.
  • Factory sleeves on site Mounting shaft a high-point head station, insertion shaft, mounting shaft,
  • Mounting shaft trough preferably designed as a gravity shaft with the functions of a surge tank, an elevated tank and a hydraulic switch for the recirculating buoyancy and transport medium (7) to be conveyed.
  • the function of the hydraulic separator ensures the hydraulic decoupling of the suction side (7b) of the high-point pump (13a) from the pressure side (7a) of the low-point pump (13b) and thus in particular prevents harmful pressure surges, for example on pumps and fittings.
  • the gravity shaft serves as a buffer store for the buoyancy and transport medium (7), which is displaced from the empty pipe system (1) as the laying process progresses in process step d2.
  • the devices (5), (6), (6a) and (6b) according to the invention for the hydrodynamic towing force provision according to the invention are installed within the high-point head station.
  • the high-point head station preferably remains in the first position during the entire assembly process in sections, until the entire assembly process has been completed and the insertion shaft is also dismantled and thus separated from the empty pipes and from the excess payload transport pipe string ends or cable ends can be pulled off.
  • b Front shaft (gravity shaft) (optional), serves to introduce and redirect the preassembled payload transport pipe string (2).
  • An upstream shaft (4b) preferably also serves as an overflow to maintain the maximum fill level in the gravity shaft (4a).
  • Manhole connection element (optional) as an insertion and connection device, especially in the function of overcoming the height difference between the longitudinal warping plane of the payload transport pipe string (2) on the support roller system (12) and the level of the empty pipe axis below the surface of the terrain.
  • Manhole connection elements are preferably designed as tubes.
  • d Low point head station, low point assembly shaft, target shaft e Transit station for the empty pipe in the area of the socket, which is used as the connection position of the low point head station (4d) for the next pull-in section after the payload transport pipe string (2) has been pulled in.
  • the low point head station (4d) moves to a certain extent in the course of the section-wise assembly process according to the invention from the end of the entire route (LL), each by a length section (LLK) in the direction of the high point head station (4a) f through shaft (optional), not shown separately, is primarily used for the installation and connection of further recirculation pump stations according to the invention for the outfeed and infeed of the recirculating buoyancy and transport medium, in order to obtain additional hydraulic connection points for hydrodynamic drag force generation, even in the course of an extremely long empty pipe system, if necessary, as drag force booster stations, with the primary function, to limit or divide the pressure increase at such through-shafts for the purpose of hydrodynamic drag force generation by high-point and low-point pumps in the empty pipe (1 a), by using additional conveyor pumps.
  • Through shafts can optionally be used for the later connection of devices for active cooling of the cables laid according to the invention, but then for feeding in and out of the cooling medium.
  • Antechamber as a device within assembly shafts, arranged in front of and / or behind sealing chambers, suitable for the connection of pumps and pipe assembly elements, fittings and sealing devices.
  • a circumferential overpressure seal as a sealing element for sealing the annular space, consisting of a single or multiple rubber ring seal or preferably consisting of an elastic, adapted foam packing that fills the annular space - the thickness Do in the uncompressed state and the thickness Di in the compressed state when the payload transport pipe string is pulled through ( 2) - which is inserted into the sealing chamber (6) at the start of assembly, in the function according to the invention, to prevent a short-circuit flow of the buoyancy and transport medium (7) into the gravity shaft (4a) through the annular space between the sealing chamber (6) and the payload Transport pipe string (2).
  • the buoyancy and transport medium (7) is fed into the overpressure antechamber (5a) by means of a high-point pump (13a).
  • a hydrodynamic drag force (8) according to the invention is exerted on the payload transport pipe string within the empty pipe (1a) in the direction of insertion over a length of the truck, in addition to the simultaneously effective weight relief by buoyancy forces which act on the payload transport pipe string (2) at the same time.
  • the sealing element can also be designed as an annular space seal with a connection to a secondary medium, in order to be able to exert a greater contact pressure of the sealing element on the sliding payload transport pipe by means of a pressurized secondary medium, or be designed as a bellows or a labyrinth seal. Due to the construction, the sealing element remains stationary during the assembly process, while the payload transport pipe string (2) slides through and the sealing element is radially compressed, whereby the sealing effect on the circumference of the payload transport pipe string (2) is maintained even while it is sliding through.
  • c Clamping sleeve (optional) to improve the sealing effect of the sealing device (6b) during the insertion process which is preferably fixed by means of the same sealing device (6b) non-positively and / or positively in the opening cross-section of the sealing device (6b) so that both a -Internal pressure of the sealing chamber (6) compared to the air pressure or water pressure within the
  • Insertion shaft (4a) - generated pushing out against the pull-in direction, as well as a pulling into the sealing chamber or into the empty pipe in the pull-in direction caused by frictional forces between the retraction rope and clamping sleeve is prevented and at the same time the
  • Buoyancy and transport medium as assembly medium a feed of the recirculating buoyancy and transport medium (7) via the overpressure antechamber connection piece (5a) into the overpressure antechamber (5) b suction of the recirculating buoyancy and transport medium (7) either via the antechamber connection piece (5b) or directly from the gravity shaft (4a), preferably by means of a high point pump (13a).
  • the buoyancy and transport medium (7) is reclaimed into the gravity well (4a), preferably by additional outfeed and ice feed of the buoyancy and transport medium (7 ) by means of a low point pump (13b) as a recirculation pump.
  • Hydrodynamic drag force in contrast to the buoyancy force (A) and the weight force (G), a dynamic force always acting in the direction of the axis of the empty pipe, which is transmitted by a buoyancy and transport medium (7), which is preferably well or tap water.
  • the so-called hydrodynamic drag force acts as a propulsive force on the outer surface of the payload transport pipe string (2) in the direction of insertion, following the axis of the empty pipe, particularly effectively when the speed of the buoyancy and transport medium (7) in the annular space between the empty pipe (1 ) and payload transport pipe string (2) is larger than that Retraction speed of the payload transport pipe string (2).
  • the hydrodynamic drag force is preferably generated by means of at least one feed pump (13), which forcibly conveys the buoyancy and transport medium (7) in the empty pipe system (1), preferably in a recirculating manner, and thereby generates a turbulent flow in the annular space, which is effective as a propulsive force and depends on the ideally dependent on the controllable delivery rate of a feed pump.
  • the pulling force is generated by a pulling device (10) and transferred to the payload transport pipe string (2) via a mounting rope (9a).
  • the method according to the invention with hydrodynamic drag force minimizes the required tensile force to a residual tensile force and ideally is superfluous in terms of process technology, as shown in FIG. 1b.
  • a roller system consisting of support, guide and deflection rollers for the longitudinal distortion of cables (payload) a vertically effective guide elements (support rollers, guide rollers or deflection rollers) b horizontally effective guide elements (support rollers, guide rollers or deflection rollers) feed pump, recirculation pump, pressure booster pump a feed pump (13) in the function and arrangement as a high point pump (driver pump), with a suction-side connection to the antechamber 5b and a pressure-side connection to the antechamber 5a in the inlet duct (4a), according to the invention, during the process process d2, it drives a partial mass flow of the in the empty pipe system ( 1) located buoyancy and transport medium (7) through the annular space between the payload transport pipe string (2) and empty pipe (1a) in the direction of the target shaft (4d).
  • the low point pump conveys the partial mass flow of the buoyancy and transport medium back to the inlet duct (4a), preferably through the empty pipe 1b, and is of particular importance when in the empty pipe 1b
  • a payload transport pipe string (2) has already been laid and larger pressure losses in the annulus need to be compensated for.
  • a high point pump (13a) would otherwise have to overcome the total friction losses at a higher system pressure level, which may be due to the limited pressure resistance of the empty pipes, which are preferably made of PE material Limitations in the delivery rate and thus to limitations in the generation of the hydrodynamic drag force could lead.
  • a higher system pressure in the overpressure pre-chamber (5a) would also increase the pressure difference to the pressure level in the gravity well (4a) and thus the annular space seal (6a) would be more heavily loaded with the possible consequence of a functional restriction.
  • Shut-off valve for the hydraulic separation of the pump suction side from the pump pressure side as a prerequisite for generating recirculation and pressure increase of the buoyancy and transport medium by means of a high point pump (13a) and low point pump (13b).
  • Mounting flange pipe multifunctional mounting lock as low point closing device, preferably arranged within the low point head station (4d)
  • Sealing device for pull rope (9a) designed as a clamping sleeve similar to 6c or as a material socket with tensioning element or as a sealing device - if necessary with connection of a secondary medium - as an exchangeable one
  • the thickness of a foam packing (6a) in the sealing chamber (6) in the compressed state which generates a contact pressure with a sealing effect as long as the payload transport pipe string (2) is pulled or pushed through the foam packing (6a) of the sealing chamber (6).
  • G Weight, weight force of the payload transport pipe string (2) e.g. specified in kg / m of the payload transport pipe string
  • a statically effective force directed towards the center of the earth e.g. specified in kg / m of the payload transport pipe string
  • a Buoyancy of the payload transport pipe string (2) a statically effective force that opposes the weight G in the flooded empty pipe system (1).
  • the buoyancy is as great as the weight of the buoyancy and transport medium (7) which is displaced by the payload transport pipe string (2) (e.g. specified in kg / m of the payload transport pipe string) and ideally as a design buoyancy as large as the weight G of the payload transport pipe string (2), which can be flexibly dimensioned by choosing the diameter of the transport pipe, if the weight of the payload and the density of the buoyancy and transport medium, which is preferably tap or well water , are known.
  • LLX Length of an empty pipe section (Lu, LL2, LL3 or LL4) which corresponds approximately to the length LK of a cable that can be transported on cable drums or the length of the payload transport pipe string (2), as in FIGS. 8, 8a, 8b, 8c (shortened length) shown schematically.
  • Such an empty pipe section is provided with hydraulic end closures (HEV), similarly designed as described in DE 10 2015 101 076, from which the cable ends lead through and out after completion of the assigned laying process with the method according to the invention and after subtracting the assembly shafts (4a and 4d) in order to be connected in the area of the socket area (LLM) with so-called socket fittings in the subsequent processes that are not the subject of the laying method according to the invention.
  • HEV hydraulic end closures
  • the maximum length LL X of an empty pipe section is first and foremost limited by the maximum delivery length LKL of a cable that can be transported and provided on site by road vehicles, but not by the laying process itself, which, when using process steps a to e according to the invention, is characterized in particular by the Buoyancy-supported laying with hydrodynamic towing support, empty pipe sections of any length LLX permits.
  • This advantage opens up the use of submarine cable connection technology, according to the state of the art using factory or factory sleeves, but instead of on Sea on cable-laying vessels, according to the invention for connecting land cables on site, when using the method according to the invention for the production of very long sleeve-free cable sections.
  • the cable extension is preferably carried out in stages.
  • both the respective end of the cable forerunner is connected to the beginning of the following cable, preferably with submarine cable technology (splicing technology) - in the area of the connecting section (3c) approximately the same diameter, and the corresponding transport pipe extension with transport pipe long sections (2b) such as shown and described in FIGS. 7c and 7e.
  • LDL cable delivery length
  • a low point head station (4d) and a transit station (4e) are set up in the socket areas of the assembly section in assembly processes b and e.
  • the cable connection sleeves are later placed in these areas, but in a subsequent process to connect the individual cables to form an overall cable harness, which is not the subject of the laying method according to the invention.
  • LK Length of the cable transport pipe for example in adaptation to the length of a cable LKL that can be supplied on cable drums

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

La présente invention concerne un procédé de montage, de déplacement et/ou de démontage de câbles ou d'autres charges utiles de forme linéaire. Au moins un tube vide (1) est déplacé. Un poste de tête de point haut (4a) et un poste de tête de point bas (4d) sont présents dans les zones de début et de fin du système de tube vide (1) fourni, au moins un système de galets (12) pour le transport longitudinal est présent sur lequel les tronçons charge utile - tube de transport (2) sont prémontés en dehors du tube vide (1) et sont fermés hermétiquement avec des têtes de fermeture (2a) et un tel système charge utile - tube de transport est créé, lequel est soumis, dans un tube vide (1) rempli avec un milieu de portance et de transport (7), d'une part à une portance de dimensionnement (A) et, d'autre part, offre sur toute sa longueur la surface de prise pour la force de traînage hydrodynamique (8), et après la réalisation du tronçon charge utile - tube de transport (2) sur le système de galets (12), le tronçon charge utile - tube de transport (2) est amené dans l'allongement longitudinal du poste de tête de point haut (4a) puis transporté, la force de traînage hydrodynamique (8) étant générée par au moins une pompe de circulation (13).
EP20727229.5A 2019-05-21 2020-05-18 Procédé et dispositifs ou système de montage, de déplacement et/ou de démontage de câbles ou d'autres charges utiles de forme linéaire Pending EP3973603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019113528.1A DE102019113528A1 (de) 2019-05-21 2019-05-21 Verfahren und Vorrichtungen bzw. System zur Montage, Verlegung und/oder Demontage von Kabeln oder anderen linienförmigen Nutzlasten
PCT/EP2020/063825 WO2020234242A1 (fr) 2019-05-21 2020-05-18 Procédé et dispositifs ou système de montage, de déplacement et/ou de démontage de câbles ou d'autres charges utiles de forme linéaire

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CN112938612A (zh) * 2021-01-27 2021-06-11 包仁钦 一种井下省力布线装置
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GB2190457B (en) * 1986-05-17 1990-12-19 Stc Plc Hydraulic cable installation system
EP0264767B1 (fr) * 1986-10-15 1992-07-15 Rudolf Harmstorf Procédé et dispositif pour insérer un élément sous forme de corde dans un conduit de câble
IT1244964B (it) * 1991-04-05 1994-09-13 Gialloreti Ugo Emberti Procedimento ed apparecchiatura per la posa di cavi entro tubi a mezzo di un fluido idraulico a pressione
US5573225A (en) * 1994-05-06 1996-11-12 Dowell, A Division Of Schlumberger Technology Corporation Means for placing cable within coiled tubing
JP2762945B2 (ja) * 1995-01-30 1998-06-11 住友電気工業株式会社 ケーブルの布設方法及び装置
NL1010270C2 (nl) * 1998-10-08 2000-04-11 Koninkl Kpn Nv Werkwijze voor het installeren van kabels in buizen door middel van een fluïdum onder druk en een inrchting voor het uitvoeren van deze werkwijze.
US6746000B2 (en) * 1999-01-29 2004-06-08 Ichimatsu Denki Koji Co., Ltd. Line-inserting method, line for inserting and optical transmission line for inserting
DE102013022347B3 (de) 2013-03-14 2019-01-24 Werner Spiegel Aktive Kühlung von Kabeln mit gasförmigen oder flüssigen Kühlmedien
DE102013102631B4 (de) 2013-03-14 2015-07-30 Werner Spiegel Verlegung von Kabeln oder anderen linienförmigen Nutzlasten
DE102015101076A1 (de) 2015-01-26 2016-07-28 Werner Spiegel Verfahren und Vorrichtungen zur aktiven Kühlung von Stromkabeln
DE102017108538A1 (de) 2017-04-21 2018-10-25 Werner Spiegel Bereitstellung im Wesentlichen linienförmiger Nutzlasten an einem Transportzielort

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