EP0447572A1 - Procédé et dispositif de hissage d'éléments tubulaires dans des cheminées industrielles - Google Patents

Procédé et dispositif de hissage d'éléments tubulaires dans des cheminées industrielles Download PDF

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Publication number
EP0447572A1
EP0447572A1 EP90104980A EP90104980A EP0447572A1 EP 0447572 A1 EP0447572 A1 EP 0447572A1 EP 90104980 A EP90104980 A EP 90104980A EP 90104980 A EP90104980 A EP 90104980A EP 0447572 A1 EP0447572 A1 EP 0447572A1
Authority
EP
European Patent Office
Prior art keywords
pipe
head
chimney
height
hydraulic
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.)
Withdrawn
Application number
EP90104980A
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German (de)
English (en)
Inventor
Wolfgang Dipl.-Ing. Haase
Sieghard Dipl.-Ing. Tiedtke
Arno Hlavensky
Jörg Dipl.-Ing. Dittrich
Matthias Dipl.-Ing. Schlieder
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.)
CTA APPARATEBAU GmbH
Original Assignee
CTA APPARATEBAU GmbH
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 CTA APPARATEBAU GmbH filed Critical CTA APPARATEBAU GmbH
Publication of EP0447572A1 publication Critical patent/EP0447572A1/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts

Definitions

  • the invention relates to a method for the lifting assembly of pipes in industrial chimneys, in which the pipe sections are mounted from top to bottom, the section to be assembled being lifted by its own height and being held at this level, the next following section introduced below, with the one before lifted shot is frictionally connected and then these shots are lifted again by one shot height for the installation of another shot and this work sequence is continued until the installation height of the pipe pull reaches the chimney height.
  • the invention further relates to a device for implementing the method, consisting of a hydraulic press, a lifting table, supports, the rigid ring carrier, each offset by 90 o arranged tilting axes comprise means of the holder and vertically movable on the Schornsteinwandung guides.
  • the method and the device according to the invention are particularly suitable for the subsequent assembly and disassembly of pipes in industrial chimneys.
  • a large number of methods for assembling pipes in chimneys are known.
  • a known method consists of lifting means attached to the head of the chimney to lift the pipe sections joined to form a pipe section up to the area of the chimney head and to place them on a supported support structure.
  • the next pipe section is assembled in the fox of the chimney from individual pipe sections, raised to below the pipe section already set down and set down on the next level provided with a supporting structure.
  • Both pipe sections are connected to each other by a seal or a coupling. This way of working continues until the joined pipe sections reach the foot of the chimney shaft.
  • From DE-OS 3 007 719 a method is known in which a load-bearing outer shaft is carried out in sliding and climbing formwork and in which platforms for receiving the flue gas pipes are supported with support arms. Support elements are formed on the inner wall of the outer shaft in the intended levels, the platforms within the outer shaft being completely manufactured at floor level and pulled into the corresponding levels by a lifting device.
  • DE-OS 1 684 976 discloses a method for assembling a walk-in chimney, in which the flue gas pipe consists of individual welded cylindrical sections. The individual shots are driven from the side under the concrete shaft of the chimney and set up vertically. A downward-reaching conveying device, for example a cable, which is fastened on the concrete shaft, takes the upright shot and pulls it up to the assembly point. At the installation site, the weft is welded to the already existing part of the flue gas pipe. If the flue gas pipe is installed from below or simultaneously from below and above, detachable claws are placed in the bottom shot after installation, which rest on the concrete frame.
  • a downward-reaching conveying device for example a cable, which is fastened on the concrete shaft
  • the known methods have the disadvantage that, even when erecting the chimney, settling brackets must be provided, on which the supporting structures for the pipe sections or pipe sections are deposited. This limits the scope of application of these known methods to new buildings. Furthermore, all of these known methods have the disadvantage that the constructional deviations occurring in the chimney can be compensated for with considerable effort at the moment of setting down. This usually means that the deviations that inevitably occur over the length of the pipe section can only be absorbed by the connection points, which leads to tension and leaks. Furthermore, the introduction of parallel pipe runs is made more difficult by passing the cable runs past the sections that have already been lifted.
  • a process for producing an industrial chimney is described in DE-OS 3 227 412. This has an outer shaft and at least one inner flue gas flue made of sheet steel, which is divided in the longitudinal direction of the chimney into individual sections which are welded together in the shaft in the circumferential direction. These sections consist of individual sheets that are individually transported into the shaft and held and welded there using templates.
  • a section of a first flue gas flue is welded together and welded to a section adjacent in the axial direction.
  • This section is raised approximately by a section height and then the section of a second flue gas duct is produced and welded to the adjacent section of the second flue gas duct in the circumferential direction.
  • DD-PS 64 138 describes a method for assembling chimneys in which prefabricated rings are made with recesses in the bearing surfaces, pushed through the recesses at the installation location, supports are placed on hydraulic presses, the prefabricated ring is lifted by its own height using presses and the finished part ring is placed on the same after moving in another finished part ring.
  • this known method enables the lifting construction, it is not transferable for the subsequent installation of flue gas flues in chimneys, because the inevitable constructional deviations cannot be compensated with this solution.
  • DE-OS 2 035 588 a lifting method is known which engages a plurality of guide rods at the same height, each of these guide rods having shoulders at a distance corresponding to a stroke of a piston of an advancing oil pressure lifting device to move a pipe section along the guide rods and hang it up at a suitable height.
  • a second section of pipe is placed immediately below the suspended first section of pipe to weld the first and second sections of pipe together. These steps are repeated until the flue gas flue reaches the mounting height.
  • This technical teaching according to DE-OS 2 035 588 requires a very complex and complex construction for the guide rods with the carrying device, which have to be introduced over the entire chimney height and causes an additional space requirement around the pipes. This limits the installation diameter of the pipes.
  • the aim of the invention is to reduce the deviations of the assembly axis or target axis from the chimney solder, while simultaneously reducing the forces introduced into the chimney wall, in simplifying the assembly process, saving on construction work, material and costs, improving the ease of maintenance and shortening assembly times.
  • the invention has for its object to bring the assembly axis of the pipe sections or the pipe pull in line with the target axis during assembly.
  • this object is achieved in that the pipe pull is aligned like a mutually articulated, rigid pressure rod during the stroke according to one or more previously plotted target axes such that the alignment in the individual steps of head and foot guidance of the pipe pull, centering the pipe pull head and base point correction of the pipe run is broken down, the guiding and centering during and the correction between the strokes being carried out intermittently.
  • the head and foot guidance take place simultaneously.
  • a preferred embodiment of the invention provides that the base point correction is compensated for by a gimbal-like rolling and sliding movement towards the base point of the selected target axis.
  • the centering takes place by a rolling movement on the chimney wall.
  • the lifting table has an articulated but lockable support, and that as a means of holding a settling station is provided at least in double shot height, which consists of hydraulically horizontally displaceable cyclers with underlying, known gimbal-like ring carriers exists, and that the means of leadership one on the head of the pipe train is a vertically sliding, horizontally hydraulically centering head station, which consists of sliding or rolling mechanisms with hydraulic cylinders arranged thereon and a hydraulic synchronization system connected to them, the piston rods being mechanically connected to one another.
  • the clock separators are arranged distributed over the circumference of the pipe run.
  • hydraulic means are provided instead of the lower ring carrier.
  • the technical-economic effects of the invention consist in reducing the deviations from the chimney solder to the assembly axis while at the same time reducing the forces introduced into the chimney wall and in simplifying the assembly process.
  • the method according to the invention is further characterized in that construction work, material and costs are saved, the ease of maintenance is improved, labor difficulties are reduced and the assembly times are shortened.
  • a pipe pull 2 is to be installed in the concrete shell 1 of an industrial chimney with a height of 140 m and a maximum opening of 9.50 m.
  • the pipe run 2 consists of individual pipe sections 3 with a diameter of 3.15 m and a height of 5.80 m.
  • the pipe sections 3 are prefabricated in the manufacturing plant and transported to the installation site. They have outer stiffening rings in their upper and lower areas, the upper stiffening ring being designed in such a way that it is able to carry the pipe section.
  • gimbal-like movable ring supports 5 are introduced onto a support structure in the lower region of the concrete shaft, for example at double shot height, which enables movement in all directions.
  • the number of pipe runs 2 to be introduced determines the number of ring supports 5, which are dimensioned such that their diameter is selected to be somewhat larger than that of the pipe sections.
  • the ring supports are measured and fixed in their position in relation to the diameter of the concrete shell 1 according to the selected nominal axis a).
  • the center points of the ring supports 5 serve to determine the solder 6, which fixes the base points of the desired axis a) on a lifting means.
  • the pipe sections 3 are fed to the lifting means on air film slider pallets, pushed onto this and to set foot point of the target axes a) aligned.
  • the lifting device also has a gimbal-like support. It lifts the pipe section by its own height in the direction of the chimney mouth.
  • hydraulically adjustable holding means move up to below the upper stiffening ring.
  • the lifting equipment is lowered and the space is thus cleared for another pipe shot to be fed in again.
  • the raised pipe section 3 is then lowered onto the holding means and is in a hanging position.
  • the head of the pipe section first assembled is centered during the stroke according to the soldered-in desired axis a) by tandem impellers 7 firmly connected to the head leaning against the chimney wall and rolling against it.
  • the next following pipe section is then fed back to the lowered lifting means and aligned with the base point of the desired axis a). With the support locked, the lifting device first lifts this pipe section up to the lower edge of the pipe section previously suspended.
  • Air is again applied to the air film slide pallet and the pipe section to be assembled is finely aligned with the previously suspended pipe. Both pipe sections are then welded.
  • the lifting device moves up with the support unlocked beforehand, so that during the stroke the pipe sections are articulated on their feet, centered on their heads and guided on the feet.
  • the pipe sections behave like an articulated rigid pressure rod 4.
  • the actual axis b) of the connected pipe sections moves according to the constructional deviations of the person passing through Stroke and the manufacturing deviations of the pipe sections from the target axis a) ( Figure 1 to 3) by the amount ⁇ L out.
  • the pipe section to be assembled is pressed over the ring support 5 during the stroke, the holding means being withdrawn.
  • the holding means then slide under the stiffening ring.
  • the pipe sections are in a hanging position and their actual axis b) can be compensated for by a sliding movement in accordance with their emigration from the base point of the target axis a).
  • the tandem impellers 7 move on the chimney wall and thus compensate for the axis shift. These steps continue until the pipe pull reaches the chimney height.
  • a hydraulic press 8 with a lifting table 9, which in the present case has two hydraulic cylinders 10.
  • a platform 11 of an air film slide station 12 is arranged, from which the air film slide plate 13 can be fed to the lifting table 9.
  • the shots to be assembled can, for example, each have a mass of 6 Mp, a height of 5.5 m and a diameter of 3 m.
  • the lifting table 9 has guides 35 with which it is hydraulically guided laterally along the chimney wall 14 and, together with the two hydraulic cylinders 10, enables a stroke in line with the pipe run to the height of a shot.
  • Hydraulic jaws 15a are arranged on the lifting table, which are connected to one another and form an articulated support 15, which allows the articulated shot to be articulated during the stroke. When each shot is installed, the articulated support 15 is locked hydraulically.
  • a settling station 16 is attached to the chimney wall 14.
  • the settling station 16 consists of rigid ring carriers 17 and 18, which are supported one above the other so that they each form a floating support surface 21 on the upper side 22 of the upper ring carrier 17 by 90 o offset tilt axes 19 and 20. Hydraulic means can also be provided for the lower ring carrier 18. Supported on the support surface 21, 3 dispensers 23 are evenly distributed over the circumference of the shot to be mounted.
  • a head station 25 is located at the level of the head 24 of the mounted shots.
  • the head station 25 consists of a guide 24a, preferably a telescopic guide, which is coupled to hydraulic cylinders 26.
  • the hydraulic cylinders 26 are connected at one end to a hydraulic synchronization system 28. Via the hydraulic synchronization system 28, the hydraulic cylinders 26, which are evenly distributed on the circumference of the shot, are acted upon with pressure oil via lines 33, the pressure force required for the sliding or rolling mechanism being applied via a pressure limiting valve 29 27 can be set.
  • the piston rods of the working cylinders 32 have a mechanical connection 36.
  • the sliding or rolling mechanism 27 is, for example, a tandem scooter with low-pressure tires.
  • the tandem design makes it possible to compensate for unevenness on the inside of the chimney 14.
  • the hydraulic synchronization system 28 causes a constant stroke of all cylinders, which enables safe lateral guidance.
  • a resulting centering force always occurs because the constant stroke in the cylinders builds up different pressures. If there is a need to move the head station 25 off-center, a different starting position of the hydraulic cylinders 26 and thus of the sliding or rolling mechanism 27 can be set by a different filling of the closed cylinder working spaces 31, which is retained when sliding.
  • the tandem rollers are placed against the maximum chimney diameter, the closed cylinder working space 31 being filled so that the hydraulic cylinders 26 are fully extended and the working cylinders 32 of the synchronous system 28, which are connected via the lines 32a, are fully extended.
  • pressure oil is displaced into the oil tank via the lines 33, the hydraulic synchronization system 28, the line 32a and the pressure relief valve 29, since the chimney wall 14 tapers.
  • pressure oil is continuously fed in via the check valve 34. If, for example, there is a need to move the head station 25 off-center in the case of floor-side assemblies, this can be done by filling the cylinder working spaces 31 differently with pressure oil, which results in different extension lengths of the hydraulic cylinders 26. This can be achieved by disconnecting the hydraulic connection of the hydraulic cylinders 26 via hose couplings and connecting separate hand pumps. If the off-center position is no longer required, the hydraulic cylinders 26 are moved back into their starting position.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP90104980A 1988-11-24 1990-03-16 Procédé et dispositif de hissage d'éléments tubulaires dans des cheminées industrielles Withdrawn EP0447572A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD32214588A DD277296B3 (de) 1988-11-24 1988-11-24 Vorrichtung zur hubmontage von rohrzuegen in industrieschornsteinen

Publications (1)

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EP0447572A1 true EP0447572A1 (fr) 1991-09-25

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EP90104980A Withdrawn EP0447572A1 (fr) 1988-11-24 1990-03-16 Procédé et dispositif de hissage d'éléments tubulaires dans des cheminées industrielles

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EP (1) EP0447572A1 (fr)
DD (1) DD277296B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135055A (zh) * 2015-07-28 2015-12-09 上海市基础工程集团有限公司 活动式可升降顶管轨道

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD277296B3 (de) * 1988-11-24 1993-03-25 Cta Apparatebau Gmbh Vorrichtung zur hubmontage von rohrzuegen in industrieschornsteinen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2315588A1 (de) * 1973-03-29 1974-10-17 Hilgers Ag Doppelmantelkamin
GB2083602A (en) * 1980-09-08 1982-03-24 Chicago Bridge & Iron Co An apparatus for the disposal of a hot exhaust gas
DD277296A1 (de) * 1988-11-24 1990-03-28 Fuerstenwalde Chem Tankanlagen Vorrichtung zur hubmontage von rohrzuegen in industrieschornsteinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2315588A1 (de) * 1973-03-29 1974-10-17 Hilgers Ag Doppelmantelkamin
GB2083602A (en) * 1980-09-08 1982-03-24 Chicago Bridge & Iron Co An apparatus for the disposal of a hot exhaust gas
DD277296A1 (de) * 1988-11-24 1990-03-28 Fuerstenwalde Chem Tankanlagen Vorrichtung zur hubmontage von rohrzuegen in industrieschornsteinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135055A (zh) * 2015-07-28 2015-12-09 上海市基础工程集团有限公司 活动式可升降顶管轨道

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Publication number Publication date
DD277296B3 (de) 1993-03-25
DD277296A1 (de) 1990-03-28

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