EP2496383A1 - Verfahren und vorrichtung zur bearbeitung eines dichtsitzes einer absperrarmatur - Google Patents
Verfahren und vorrichtung zur bearbeitung eines dichtsitzes einer absperrarmaturInfo
- Publication number
- EP2496383A1 EP2496383A1 EP10779273A EP10779273A EP2496383A1 EP 2496383 A1 EP2496383 A1 EP 2496383A1 EP 10779273 A EP10779273 A EP 10779273A EP 10779273 A EP10779273 A EP 10779273A EP 2496383 A1 EP2496383 A1 EP 2496383A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- valve
- shut
- processing
- bearing
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
- B24B15/02—Machines or devices designed for grinding seat surfaces; Accessories therefor in valve housings
- B24B15/03—Machines or devices designed for grinding seat surfaces; Accessories therefor in valve housings using portable or mobile machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
- Y10T137/4245—Cleaning or steam sterilizing
- Y10T137/4273—Mechanical cleaning
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
- Y10T137/4245—Cleaning or steam sterilizing
- Y10T137/4273—Mechanical cleaning
- Y10T137/428—Valve grinding motion of valve on seat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49405—Valve or choke making
- Y10T29/49407—Repairing, converting, servicing or salvaging
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49719—Seal or element thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49721—Repairing with disassembling
- Y10T29/49723—Repairing with disassembling including reconditioning of part
- Y10T29/49725—Repairing with disassembling including reconditioning of part by shaping
- Y10T29/49726—Removing material
- Y10T29/49728—Removing material and by a metallurgical operation, e.g., welding, diffusion bonding, casting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/12—Radially moving rotating tool inside bore
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/12—Radially moving rotating tool inside bore
- Y10T82/125—Tool simultaneously moving axially
Definitions
- the invention relates to a method and a device for processing a sealing seat of a shut-off valve.
- shut-off valves To shut off pipelines in power plants or industrial plants a variety of shut-off valves are used.
- industrial plants come e.g. all fluid equipment, e.g. the chemical industry, in question.
- power plants here are all types of power plants such.
- shut-off valves are e.g. Gate valves and check valves in low (ND), medium (MD) and high pressure (HD) areas, corresponding to approx. 40bar, 40-160bar and over 160bar.
- the nominal widths of corresponding shut-off valves are in the range of approx. 50 to 1200mm.
- the shut-off valves in this case have at least two connection ⁇ pipes that lead inside a fitting housing. There have such connection pipes with sealing functionality on their front ends sealing seats. These run, for example, to the center plane of the shut-off valve parallel (LP check valve) or in this case to the upper part of the valve opening inclined ⁇ th plane (HD wedge slide).
- Flap sealing elements such as sealing plates, into the area of the connecting pipes of the valve body, which bear against the sealing seat.
- the pressure-loaded side (inlet connection pipe) of a shut-off valve presses the sealing plate against the sealing ring or sealing seat on the non-pressure side (drain connection pipe). This creates a sealing effect.
- the medium is thereby blocked independently of the direction of flow; in the case of check valves, the media flow is blocked only against a predetermined flow direction.
- Gate valves are usually set path-dependent via remote drives or handwheels.
- the path-dependence of the travel path means that the sealing plates are moved in and out of the valve housing just enough so that they reliably block or release the sealing seat even taking into account all the temperature expansions and do not collide with the valve body. Since the sealing surfaces in corresponding shut-off valves must withstand a high load, these are e.g. Low-pressure valves up to nominal pressure (PN, Pressure Nominal) PN40 secured against wear with a 17% chrome steel armor. In other words, a few millimeters thick layer of chromium steel is welded onto the front end of the connecting pipe as a hard application.
- PN nominal pressure
- a wear ⁇ behavior is due to the partially high surface pressure on the sealing elements, in particular the sealing seats.
- the sealing behavior of the shut-off valve increases increasing wear of the sealing surfaces and the tightness of the fittings is no longer guaranteed.
- corresponding wear can already be used after one or several thousand closing cycles. This depends heavily on the type of medium flowing through the valve, the temperatures that occur, etc.
- shut-off valve or their seals with appropriate wear.
- the slide assemblies e.g. the sealing plates, gate valves, check valves, etc.
- the transport of the removed parts is usually unproblematic.
- the remediation can therefore be e.g. done locally in the plant outside the valve, in a workshop of the plant or at a manufacturer of the valve.
- the mixing zone between the base material and the armor ie the heat-affected zone of the weld
- the required nominal hardness of the armor is no longer guaranteed.
- the wear ⁇ behavior of the sealing seat therefore increases proportionally with the number of re-grinding or the time to further and the failure of the sealing elements or sealing surfaces or sealing seats of the shut-off valves adjusts itself.
- Sealing seats as far damaged that the above-grinding does not create any more remedy, removing the Be ⁇ damage done by cutting out the entire shut-off valve from the piping system.
- the segregated valve is then provided for refurbishment in a site workshop or a faucet manufacturer, which has the necessary refurbishment machines.
- the fitting is then clamped in its entirety on the outer surfaces in a jig and through conventional processing machines, such as lathes, welding machines, etc. rehabilitated.
- the defective valve is not rehabilitated, but disposed of and introduced at the original location of the piping system in the power plant or industrial plant a new or Aus ⁇ exchange fitting.
- the cutting out and re-welding ⁇ KISSING a fitting involves considerable expense.
- extensive repair specifications are necessary especially for nuclear power plants.
- the separation of large and heavy valves from the existing pipe system requires special equipment, special lifting equipment and is often possible only with considerable effort due to the cramped environment space of the fitting, for example, first surrounding installation or building parts must be removed in order to remove the fitting at all ,
- the object of the invention is therefore to provide an improved method and an improved apparatus for processing a sealing seat one in a power plant or industrial plant Montie ⁇ ren shut-off valve.
- the invention is based on the basic idea that
- a complex apparatus for that method is used, which is used in the plant for Repa ⁇ temperature of the built-in fitting.
- the entspre ⁇ sponding sealing seats are only accessible from the housing opening ago when namely fittings Top, drives, sealing plates and other internals are removed. Since the sealing seats are usually approximately parallel, but the housing opening is perpendicular to the center plane of the valve, usually a force and movement deflection must take place by about 90 °.
- the processing apparatus In wedge plate slides the processing apparatus must be adjusted in addition to the angle of inclination of the sealing seats with respect to the spindle longitudinal axis ⁇ , that said mid-plane.
- the lack of space in the valve body requires a special construction ⁇ way the processing device, without restricting their functionality.
- the processing device is to be constructed in a flat construction, in order to be able to be used, for example, between two connecting tubes or sealing seats of a wedge slide. According to the invention, the processing of the sealing seats can thus take place from a direction perpendicular to its transverse plane. The corresponding forces for processing are then particularly easy to apply.
- a method according to claim 1 for processing a arranged at the end of a connecting pipe sealing seat of a mounted in a power plant or industrial plant shut-off valve comprising the following steps: In a step a), the upper part of the valve and the installation ⁇ th is removed from the housing of the shut-off valve, whereby a housing opening is released.
- This housing opening is eg a flange for valves in the low and medium pressure range, for fittings in the high pressure area a housing neck or mandrel.
- a step b) is a clamping device through the
- connection pipe Housing opening in the addressed connection pipe or another, for example, the opposite of the sealing seat to be machined connecting pipe introduced.
- the clamping device is attached to the inner wall of the connection pipe.
- the Spannvor ⁇ direction has an abutment, which in the assembled state, ie with a fixed clamping device on the
- Housing interior facing side of the clamping device is located and thus continues to be accessible from the housing opening.
- a processing machine is introduced into the housing through the housing opening.
- the processing ⁇ machine carries a bearing with which it is mounted on the counter bearing.
- a processing step is performed on the sealing seat with the processing machine.
- steps c) to e) are repeated with another or the same processing machine.
- the tensioning device is released from the connecting pipe and removed through the housing opening again from the shut-off valve.
- the Armatu ⁇ renoberteil and the internals are attached to the housing and the valve thereby completes ready for use again.
- the clamping device or the abutment thus form a geometrically exactly fixed and stationary reference location in the valve, which remains fixed in place for all processing steps or their accuracy.
- the counter-bearing thus forms a reference point or a reference dimension within the valve.
- This is then fixed relative to the zero dimension of a fitting, for example a flange of a low pressure slide and can be used again during the restoration itself as a zero gauge.
- work steps carried out one after the other can be carried out in positions that are exactly geometrically related to one another, since all processing machines are always stored in a defined geometric position on the fixed abutment which is not moved during the process.
- the clamping device is thus spent, for example, to any, but fixed position and then determines the position of the anvil in the coordinate system of the valve.
- the processing then takes place with the processing machines from dimensionally stable from the once fixed position.
- the processing machines used can be stable and easy to carry out what high machining forces made ⁇ light.
- the sealing plates or slide assemblies can in the usual way as before outside the fitting housing, e.g. in a workshop, to be repaired.
- the method is e.g. qualified in advance to the corresponding dummies of the valves, so that the reproducibility of the fitting to be machined in the system is ensured.
- a simulation is done on a pattern, e.g. also to complete examination or admission procedures.
- the end of the connection pipe facing the interior of the housing is turned or ground off as a processing step.
- a processing step it is possible, for example, turn off or grind a fit for a newly inserted slide seat ring in a precisely defined geometric plane, remove armor of a sealing seat down to the base material in a defined plane or a newly applied armor both plane-parallel and in one defined Just to grind precisely with respect to the valve geometry.
- By turning a mechanical finishing of the sealing surfaces can be realized by shaping grinding their fine machining.
- a pan ⁇ forming the sealing seat is welded onto the end face of the connecting pipe as a processing step.
- the following procedure is mög ⁇ Lich: In a valve to be renovated after disassembly of the slide assemblies the first still existing or the current state of the seal seat optically or mechanically vermes ⁇ sen. For example, the thickness of the remaining remaining on the connecting pipe armor is measured. Subsequently, the clamping device is attached as described and fixed to a desired position with respect to the fitting geometry, so that, for example, the anvil forms a fixed point at a defined location in the fitting.
- a newly incorporated and thus high-quality hardness profile in the form of a new armor or a new sealing seat can be introduced into the existing shut-off valve.
- hardnesses of 340-400HV Vanickers hardness
- the service life and the wear behavior are significantly improved due to the newly introduced hardening at the sealing surfaces.
- the specification of the valve is not changed since the original state is restored almost identically at the time of manufacture of the valve.
- the preparation of preliminary test documents is considerably simplified. For example, in a nuclear power plant only repair pre-test documents must be created.
- the machine tool should have degrees of freedom of five axes, namely a displacement in the longitudinal direction of the connection pipe, a tilt towards the sealing seat to follow different angles of wedge slides, a rotation about the longitudinal axis, and the displacement perpendicular to the longitudinal axis (movement in a plane: 2 degrees of freedom).
- Any desired sealing seats can be processed with this.
- the sealing seat is namely applied as a multi-layer layer of particular hardness on a ent ⁇ speaking seat ring.
- the clamping device is usually introduced into the same connection pipe, which is also to be processed.
- the clamping device is therefore, for example, further introduced into the connecting pipe than when the low-pressure fitting of the connecting tube opposite sealing seat to be restored. Nevertheless, the clamping device is again as close as possible to the processing location.
- the tensioning device is fastened in the connection pipe in such a way that a reference point of the tensioning device on the central longitudinal axis of the connection pipe lies.
- the object of the invention is achieved by a device according to claim 7 for processing a arranged at the end of a connecting pipe
- the device comprises a tensioning device, which can be introduced through a housing opening of the shut-off valve into the restoration pipe or another connecting pipe.
- the clamping device has a counter-bearing and includes a cooperating with the inner wall of the connecting tube mounting ⁇ element to the clamping device safe and stable for the duration of the above method in the connecting pipe to Fixed To ⁇ gene.
- the apparatus also comprises at least one through the housing opening in the Housing einbringbareriessma ⁇ machine for performing a processing step on the sealing ⁇ seat.
- the processing machine has a bearing which can be stored in the abutment.
- the fastener In a specific embodiment of the invention has an on against the inner wall of the connecting tube ⁇ approachable hydraulic cylinder the fastener.
- the tensioning Device particularly simple and high strength in the connection pipe are attached.
- the clamping device is in this case usually disc or cylindrical and is fixed in the assembled state with its transverse plane parallel to a transverse plane of the connecting pipe.
- the hydraulic cylinders can be remotely controlled. By selectively controlling various hydraulic cylinders, the position of the tensioning device in a transverse plane to the connection pipe can be easily changed when the hydraulic cylinders extend in the mounting state in an approximately radial direction of the connection pipe.
- the tensioning device comprises at least two measuring probes which can be placed on the inside of the connecting tube.
- the actual position of the clamping device in the connecting pipe can be determined and these are combined in particular together with controllable hydraulic cylinders to asj ustierenden system, so that, for example, the clamping device in the connecting pipe automatically centered to its central longitudinal axis.
- self-adjusting probes result from a corresponding regulation.
- the counter bearing is a fixable quick release receptacle.
- the bearing is then alternatively or additionally a roller or ball head. Due to the quick release holder, a processing machine with its bearings can be fastened particularly quickly and easily to the clamping device. A change to another processing machine is then quick and easy. Due to the fixability, the relative position between bearing and counter ⁇ bearing and thus between processing machine and Spannvor- direction are fixed. So then the fisma ⁇ machine is rigidly fixed in the reference frame of the valve to eg
- a defined output ⁇ location for the machine tool or a nes of this gehalte- tool such as a turning tool.
- the machine only receives a single degree of freedom of mobility, namely to perform a rotational movement about the roll axis. This is particularly desirable, for example, when a processing machine is to be set to the wedge angle of a wedge slide sealing seat and different angles are to be assumed here.
- a ball head towards ⁇ allows corresponding Verkippurged theitiesma ⁇ machine about two axes, but the fixation in a plane, eg in the axial direction of the connecting pipe, is given.
- the anvil is fixedly arranged on the clamping device and also placed on it such that it can be centered by an adjustment of the clamping device in the connecting pipe on the central longitudinal axis of the connecting pipe.
- the clamping device can always be adjusted in the connecting pipe, that the counter-bearing is centered on the central longitudinal axis of the An ⁇ closing pipe.
- the counter bearing thus forms a standardized starting point for the respective bearing of a processing machine.
- Base support attached so that its angle of inclination to
- Basic support does not vary. It follows from such a device that a change of the inclination angle of the machining head ⁇ processing is effected to the sealing seat solely by a tilting of the base support in counter-bearing. This in turn can be easily adjusted from outside the fitting housing, eg manually by means of a jig or a link.
- the base support forms a kind of lever which is accessible and operable outside the housing opening and with which the inclination of the machining head can be varied to the sealing seat. This is also suitable to remplistel ⁇ len in a particularly simple manner, the target inclination of the machine and thus the sealing seat with respect to the shut-off valve.
- the processing ⁇ machine is a turning or grinding machine with a state in the assembly ⁇ outside the housing lying drive.
- the base ⁇ carrier forms a wave arm, which connects the drive with the machining head.
- the machining head carries a rotating or grinding element rotatable about a rotation axis, the rotation axis having a fixed relative position to the wave arm. So this results in a grinding or.
- the grinding step in the above-mentioned method can also be carried out, for example, with a conventional slider grinding machine.
- the turning or grinding element for example a turning tool
- deliverable as a work ⁇ generating only in radial and longitudinal direction with respect to the rotation axis.
- the axial and radial engagement position of the tool in the longitudinal direction of the central longitudinal axis of the An ⁇ closing pipe is thus effected by the delivery.
- the position of the plane of the attack position is achieved by adjusting the wave arm.
- the processing machine is a welding machine or -anläge, wherein in the assembled state whose supply unit, eg the voltage ⁇ supply and the controller, outside the housing.
- a bearing carrier having basic ⁇ .
- On the base support a weldment and a rotatable about a rotation axis welding head are arranged.
- the axis of rotation is for example perpendicular to the nominal plane of the sealing surface or the central longitudinal axis of the connecting pipe.
- Welding head and workpiece is controlled by the plant itself.
- the welding system must therefore be exactly centered only with respect to the transverse plane of the sealing seat.
- the processing machine comprises a holder which can be fastened to the housing opening.
- a support plate is attached to the flange of a low-pressure fitting or the dome of a high-pressure fitting, in turn, in the support plate, a part of the processing ⁇ machine, for example, the base support or shaft arm, can be fixed.
- the entire processing machine is fixed at least against unintentional release, but usually also in a defined spatial position in the shut-off valve. In particular with overhead mounted shut-off valves, the processing machine is thus securely held in its mounting or working position.
- the holder allows a change and fixation of the position of the processing machine in the warehouse in the assembled state of the processing machine.
- This example is in connection with the above-mentioned variation of the angle of attack of a sealing seat of a wedge slider ⁇ useful if, for example, the fixation in a conventional 3 ° or 7 ° tilt position of the working machine or its tool is possible.
- FIG. 1 shows a low-pressure wedge slide as a shut-off valve
- FIG. 2 shows the fitting from FIG. 1 in the disassembled state
- FIG. Fig. 3 shows a valve according to FIG. 2 with inserted
- FIG. 6 shows the detail VI from FIG. 5.
- Fig. 1 shows a section of a pipe 4 a system 2, in the example of a power plant, representative of any power plant or industrial plant.
- a shut-off valve 6 is integrated, in the example, a low-pressure gate valve.
- the shut-off valve 6 has as a fixed component two connection pipes 8a, b, via which it is firmly welded to the pipe 4.
- the connecting pipes 8a, b are part of a housing 10 of the ARMA ⁇ structure 6, which has a flange 12 at a housing opening fourteenth
- Fig. 1 shows the shut-off valve 6 in the final assembled state, namely, if on the flange 12, a housing cover 16 is mounted, which carries a spindle 18.
- the spindle 18 terminates at its one end in a hand wheel 20.
- a sealing element 22 in the form of two sealing plates.
- the sealing element 22 cooperates with two sealing seats 24a, b, which are arranged in the interior of the housing 10 at the front ends of the connecting pipes 8a, b.
- the sealing seats 24a, b are formed such that on the base ⁇ material 34 of the connecting pipes 8a, b an armor 36, in the example of 17% chromium steel at the respective ends 26 is welded frontally.
- Housing cover 16, spindle 18, hand ⁇ wheel 20 and sealing member 22 together form the so-called housing internals 32 of the shut-off valve 6, which are all removable from the housing 10.
- the shut-off valve 6 is shown in the closed state, that is, the sealing element 22 abuts the sealing seats 24a, b.
- the handwheel 20 is rotated in the direction of arrow 28, whereupon the spindle 18 lifts the sealing element 22 in the direction of the arrow 30 from the sealing seats 24a, b.
- the ends 26 of the connecting pipes 8a, b are then completely opened and medium, not shown, can flow freely through the pipe 4 in both directions.
- the sealing seats 24a, b use heavily.
- the shut-off valve 6 must be rehabilitated in this regard.
- the Absperrarma ⁇ tur 6 remains this purpose in the pipe 4.
- a first process step a) all housing internals 32 are first removed.
- Fig. 2 shows the shut-off valve 6 of FIG. 1 with disassembled housing internals 32nd Die
- Housing opening 14 is now open, that is, the interior of the housing 10 is accessible from the outside space 44.
- the sealing seats 24a, b are visible through the housing opening 14 and can be measured optically or with sliding calipers, not shown, or other measuring devices.
- the current state of the sealing seats 24a, b can be determined.
- ⁇ sondere example can be determined which thickness d of the sealing seats 24a, b have yet.
- the armor 36 has reduced from an original thickness indicated by broken lines do at the time of manufacture of the fitting 6 to the thickness d.
- For refurbishment of the sealing seats 24a, b will continue to proceed as follows. Through the housing opening 14 is shown in FIG.
- the clamping device 40 is approximately disc-shaped and has a stop 42, with which it is placed on the sealing seat 24 a ⁇ .
- hydraulic cylinders 48 attached to the clamping device 40 are pressed against the inner wall 50 of the connecting pipe 8a.
- the hydraulic cylinder 48 is thus part of a fastening element, with which the clamping device 40 in the on ⁇ is secured connection pipe 8a. These are essentially radially movable. As a result, the clamping device 40 is securely fixed in the connecting pipe 8a.
- the clamping device 40 In order to center the radial position of the clamping device 40 in the connecting tube 8a exactly on its central longitudinal axis 52, the clamping device 40 also radially outwardly facing sensor 54, by which the distance of the clamping device 40 to the inner wall 50 at the respective position of the sensor 54 are measured can.
- the hydraulic cylinders 48 are driven accordingly to finally center the tensioning device 40.
- 3 shows the tensioning device 40 in the end-adjusted mounting state M.
- the tensioning device 40 has an abutment 56 which lies in the assembled state M in the interior of the housing 10 or points there and is accessible from the housing opening 14 forth.
- a reference point 57 namely the center of the anvil 56 on the central longitudinal axis 52. This serves as a fixed geometric starting position for the bearing 64 to be attached as described below.
- a step c) is now in the direction of arrow 38 a
- Processing machine 58 also inserted through the housing opening 14 in the housing 10.
- the processing machine 58 is in Fig. 3, a lathe, which has a shaft arm 62 as the base support 60. On the base support 60 to the abutment 56 matching bearing 64 is firmly attached.
- Fig. 3 shows the processing machine 58 also in the assembled state M, namely, when the bearing 64 is inserted into the abutment 56 and stored in this.
- a drive 66 is attached, at the opposite end of the shaft arm 62, a machining head 68.
- the machining head 68 is rotatable about a rotation axis 74, which to the longitudinal axis 76 of Waves ⁇ arm 62 has a fixed, in the example, a 90 ° angle.
- a turning tool 78 is held on the machining head 68 as a machining tool or tool, which is deliverable relative to the shaft arm 62 only in the radial direction 80 and in the axial direction 82 relative to the axis of rotation 74. This is achieved by a set screw 84 and a slide valve 86th
- the processing machine 58 is fixed or mounted on the housing 10 by the bearing 64 via the abutment 56 and the tensioning device 40 and is pivotable only in accordance with the degree of freedom permitted by the bearing 64 and abutment 56. On the other hand, it is stored at another point.
- a holder 70 is screwed, on which in turn adjustably a carriage 72 is mounted, which guides the shaft arm 62.
- the sealing seat 24b is to be machined so that its plane plane 88 assumes a predetermined angle to the center plane 90 of the fitting 6, since the shut-off fitting 6 is a wedge slide.
- the firmwaresma ⁇ machine 58 is to hire according to the connecting pipe 8b. Since the rotation axis 74 is fixed to the longitudinal axis 76, is the angle is adjusted by moving the carriage 72 in the direction of the arrow 92, and so the shaft arm 62 is tilted in the counter bearing 56. The correct angle is controlled by an inclinometer 94 mounted on the shaft arm 62.
- a processing step Bl is now carried out on the sealing seat 24b.
- the turning tool 78 in the radial direction 80 and axial direction 82 namely the remaining armor 36 of the thickness d is turned off from the connecting pipe 8b.
- the base material 34 is accessible again for a stable subsequent welding.
- a step e) the processing machine 58 is now released from the abutment 56 and removed through the housing opening 14 against the direction of the arrow 38 from the shut-off valve 6. Since the refurbishment of the sealing seat 24b has not yet been completed, the steps c) to e) are repeated in a step f) correspondingly often with changing processing machines 58.
- the processing machine 58 has as ⁇ on its base support 60, a bearing 64, with which it is fixed in the abutment 56. Again, the Grundträ ⁇ ger 60 is again fixed to the bracket 70 to fix the machine tool 58 in its mounting position M. This is done by a fixing arm 95. Via aéesslei ⁇ tung 96 of the base support 60 is connected to a space 44 arranged in the outer supply module 98th This contains eg the power source and the controller for the welder. On the base support 60, a weldment 100 in the form of a wire roll, a wire feed 102 and a TIG welding torch 104 is arranged.
- the TIG welding torch 104 is always automatically held at the correct distance from the object to be welded, namely the end 26 of the connecting tube 8b.
- machining step B2 a new armor 36 (indicated by dashed lines) to the on-circuit ⁇ pipe 8b welded.
- the processing step B2 en ⁇ det when the armor 36 has reached the original thickness do with a certain, serving for a post-processing supernatant.
- the processing machine 58 is then removed from the housing 10 against the direction of the arrow 38.
- the lathe is again used as the processing machine 58.
- the newly applied armor 36 is turned off with this in a processing step B3 to the original size of the thickness do.
- the Drehmeisel 78 is then replaced in the processing ⁇ machine 58 by a polishing tool 112 as a tool.
- the sealing seat 24b tet as a surface of the armor 36 endbearbei ⁇ or polished in a final processing step B4.
- the clamping device 40 is then released from the housing 10 and ent ⁇ removed in a process step g). If necessary, the clamping device 40 is now inserted into the already processed connecting pipe 8b and in the manner described above, the sealing seat 24a restored to its original dimension of the thickness do.
- Fig. 5 shows as an alternative shut-off valve 6 a high-pressure slide, which also has a housing 10 and connecting pipes 8a, b, a sealing element 22, a spindle 18, a hand wheel 20 and a housing cover 16.
- a seat ring 114a, b is welded to the end 26 of the connecting pipes 8a, b respectively facing the interior of the housing 10. This carries in each case the sealing ⁇ seat 24 a, b.
- a tensioning device is in turn 40 is fully introduced into the interior of the connection pipe 8a which is equipped in accordance with hydraulic ⁇ cylinders 48 and sensors 58 to 52 centered on with ⁇ tell Lucassachse and to be fixed.
- a processing machine 58 is ⁇ sets.
- the processing machine 58 is also introduced as the ⁇ in the direction of arrow 38 into the interior of the housing 10 and res in the present case in the interior of the Ranroh- 8a. In contrast to the above Spannvor ⁇ direction, however, kept in the same connection tube, the sealing seat is to be restored.
- Fig. 6 shows the detail VI of Fig. 5. To see is the
- a degassing slot 118 (shown in FIG. 6) is provided on the seat ring 114a to be newly introduced. Chelt indicated) present, in order to dissipate emerging welding gas during processing.
- Fig. 6 also shows, as in a high-pressure sealing seat in the form of a multilayer armor 36 on the seat ring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Pipe Accessories (AREA)
- Arc Welding In General (AREA)
- Automatic Assembly (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910046401 DE102009046401B4 (de) | 2009-11-04 | 2009-11-04 | Verfahren und Vorrichtung zur Bearbeitung eines Dichtsitzes einer Absperrarmatur |
| PCT/EP2010/066780 WO2011054891A1 (de) | 2009-11-04 | 2010-11-04 | Verfahren und vorrichtung zur bearbeitung eines dichtsitzes einer absperrarmatur |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2496383A1 true EP2496383A1 (de) | 2012-09-12 |
| EP2496383B1 EP2496383B1 (de) | 2017-01-04 |
| EP2496383B9 EP2496383B9 (de) | 2017-04-05 |
Family
ID=43734052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10779273.1A Active EP2496383B9 (de) | 2009-11-04 | 2010-11-04 | Verfahren und vorrichtung zur bearbeitung eines dichtsitzes einer absperrarmatur |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US8539673B2 (de) |
| EP (1) | EP2496383B9 (de) |
| JP (1) | JP5499178B2 (de) |
| CN (1) | CN102596502B (de) |
| BR (1) | BR112012010574B1 (de) |
| CA (1) | CA2778164C (de) |
| DE (1) | DE102009046401B4 (de) |
| PL (1) | PL2496383T3 (de) |
| RU (1) | RU2521569C2 (de) |
| WO (1) | WO2011054891A1 (de) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737454A (zh) * | 2013-11-29 | 2014-04-23 | 成都欧浦特控制阀门有限公司 | 可定位的阀门研磨装置 |
| DE102014212149A1 (de) * | 2014-06-25 | 2015-12-31 | Siemens Aktiengesellschaft | Vorrichtung zur Verspreizung in einem Hohlraum und Verfahren zur Montage der Vorrichtung |
| RU2604238C2 (ru) * | 2015-02-05 | 2016-12-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Липецкий государственный технический университет" (ЛГТУ) | Устройство для калибрования посадочных отверстий с полимерным покрытием в корпусных деталях |
| JP5881884B1 (ja) * | 2015-06-16 | 2016-03-09 | 三菱日立パワーシステムズ株式会社 | 弁座加工機および当該弁座加工機を用いた弁座加工方法 |
| JP5881883B1 (ja) * | 2015-06-16 | 2016-03-09 | 三菱日立パワーシステムズ株式会社 | 弁座加工機および当該弁座加工機を用いた弁座加工方法 |
| JP6335147B2 (ja) * | 2015-08-18 | 2018-05-30 | 日立Geニュークリア・エナジー株式会社 | ゲート弁シートリング摺り合わせ工具及びそれを用いたシートリングのメンテナンス方法 |
| CN106392881B (zh) * | 2016-10-25 | 2018-08-21 | 中国兵器科学研究院宁波分院 | 用于发动机一体式气门座圈巡边磨削加工的径向进给装置 |
| CN107030446B (zh) * | 2017-04-27 | 2023-01-31 | 上海电力股份有限公司吴泾热电厂 | 高温高压蒸汽阀门密封面在线修复系统 |
| RU2666973C1 (ru) * | 2017-10-13 | 2018-09-13 | Публичное акционерное общество "Транснефть" (ПАО "Транснефть") | Способ диагностики уплотнительных поверхностей запорной арматуры |
| CN107971729B (zh) * | 2017-12-25 | 2024-09-24 | 重庆众颖熙科技有限公司 | 一种用于压装缸盖导管与座圈的压装设备 |
| CN113714538B (zh) * | 2021-09-30 | 2022-07-01 | 浙江万得凯流体设备科技股份有限公司 | 一种截止阀的生产工艺 |
| CN115446335B (zh) * | 2022-08-18 | 2024-07-16 | 中核核电运行管理有限公司 | 一种用于主蒸汽安全阀在线加工的模块化机床 |
| CN116652500B (zh) * | 2023-06-20 | 2024-05-31 | 黄山市海纳智能制造有限公司 | 阀座加工用法兰盘与座体拼焊平台 |
| CN117140198B (zh) * | 2023-08-22 | 2025-10-31 | 吉林市佰丰科技有限公司 | 一种核电阀门智能化打磨检测系统 |
| CN118417994B (zh) * | 2023-11-22 | 2024-10-08 | 温州弘球机械有限公司 | 一种硬密封球阀阀体与密封座快速配磨装备及工艺 |
| CN117718683A (zh) * | 2023-12-08 | 2024-03-19 | 中船澄西船舶修造有限公司 | 一种喷油器与汽缸盖接触面修复方法 |
| CN120828285B (zh) * | 2025-09-17 | 2026-01-06 | 高特控股集团有限公司 | 一种截止阀的自动化组装系统及其工作方法 |
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| DE2400077A1 (de) * | 1974-01-02 | 1975-07-17 | Alfred Butz | Vorrichtung zum schleifen von flaechen, insbesondere von dichtungsflaechen fuer absperrschieber oder dergleichen |
| US3881396A (en) * | 1974-03-01 | 1975-05-06 | Grimsley Ernest E | Portable boring bar |
| DD109822A1 (de) * | 1974-03-21 | 1974-11-20 | ||
| JPS5246521A (en) * | 1975-10-13 | 1977-04-13 | Okano Valve Seizo Kk | Self valve seat lapping device for sluice valve |
| US4000584A (en) * | 1976-04-01 | 1977-01-04 | The United States Of America As Represented By The Secretary Of The Navy | In-situ lapping apparatus for gate valves |
| FI59292C (fi) * | 1979-04-18 | 1981-07-10 | Waertsilae Oy Ab | Slidventil |
| DE3237902A1 (de) * | 1982-10-13 | 1984-04-19 | Bernd Dipl.-Ing. 5620 Velbert Kirchner | Flanschschleifmaschine |
| DD217171A1 (de) * | 1983-09-09 | 1985-01-09 | Orgreb Inst Kraftwerke | Einrichtung zur messung der anpresskraft des werkzeuges einer transportablen dichtflaechenschleifmaschine |
| DE8706117U1 (de) * | 1987-04-28 | 1987-06-11 | Unislip GmbH, 5180 Eschweiler | Andrückvorrichtung für Schieberschleifmaschinen |
| DD278542A1 (de) * | 1988-12-23 | 1990-05-09 | Magdeburger Armaturenwerke | Vorrichtung zum feinstschleifen von schiebergehaeusedichtflaechen |
| JPH03116107A (ja) * | 1989-09-29 | 1991-05-17 | Sumitomo Electric Ind Ltd | 光通信器 |
| US5732607A (en) * | 1995-05-12 | 1998-03-31 | Climax Portable Machine Tools, Inc. | Portable machine tool |
| US6007410A (en) * | 1998-08-07 | 1999-12-28 | Nerenberg; Bruno | Pipefacing tool |
| RU17297U1 (ru) * | 1999-10-05 | 2001-03-27 | Ооо "Экосервис" | Устройство для электродуговой наплавки |
| DE102005004232A1 (de) * | 2005-01-28 | 2006-08-10 | Ksc Kraftwerks-Service Cottbus Anlagenbau Gmbh, Sitz Peitz | Verfahren und Vorrichtung insbesondere zur Reparatur von Absperrarmaturen in Kraftwerken |
| RU46696U1 (ru) * | 2005-02-22 | 2005-07-27 | Общество с ограниченной ответственностью "Томскнефтехим" (ООО "Томскнефтехим") | Переносной станок для механической обработки уплотнительных поверхностей седел клиновых и шиберных задвижек без удаления их с трубопроводов |
| CN2827630Y (zh) * | 2005-07-06 | 2006-10-18 | 范金娥 | 一种阀门研磨机 |
| CN101176981A (zh) * | 2007-11-02 | 2008-05-14 | 赵殿纯 | 砂轮研磨机在阀门上的应用研磨方法 |
-
2009
- 2009-11-04 DE DE200910046401 patent/DE102009046401B4/de not_active Expired - Fee Related
-
2010
- 2010-11-04 PL PL10779273T patent/PL2496383T3/pl unknown
- 2010-11-04 EP EP10779273.1A patent/EP2496383B9/de active Active
- 2010-11-04 WO PCT/EP2010/066780 patent/WO2011054891A1/de not_active Ceased
- 2010-11-04 JP JP2012535879A patent/JP5499178B2/ja not_active Expired - Fee Related
- 2010-11-04 BR BR112012010574-4A patent/BR112012010574B1/pt not_active IP Right Cessation
- 2010-11-04 CA CA2778164A patent/CA2778164C/en not_active Expired - Fee Related
- 2010-11-04 RU RU2012122829/02A patent/RU2521569C2/ru active
- 2010-11-04 CN CN201080049996.5A patent/CN102596502B/zh not_active Expired - Fee Related
-
2012
- 2012-05-04 US US13/463,985 patent/US8539673B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011054891A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8539673B2 (en) | 2013-09-24 |
| EP2496383B1 (de) | 2017-01-04 |
| US20120240403A1 (en) | 2012-09-27 |
| WO2011054891A1 (de) | 2011-05-12 |
| CA2778164C (en) | 2015-11-03 |
| RU2012122829A (ru) | 2013-12-10 |
| PL2496383T3 (pl) | 2017-09-29 |
| DE102009046401B4 (de) | 2012-08-09 |
| RU2521569C2 (ru) | 2014-06-27 |
| EP2496383B9 (de) | 2017-04-05 |
| JP5499178B2 (ja) | 2014-05-21 |
| BR112012010574A2 (pt) | 2016-03-22 |
| DE102009046401A1 (de) | 2011-05-12 |
| JP2013510008A (ja) | 2013-03-21 |
| CN102596502A (zh) | 2012-07-18 |
| CA2778164A1 (en) | 2011-05-12 |
| CN102596502B (zh) | 2015-10-14 |
| BR112012010574B1 (pt) | 2021-01-05 |
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