CN220922260U - Valve cage taking-out tool - Google Patents
Valve cage taking-out tool Download PDFInfo
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- CN220922260U CN220922260U CN202322692536.1U CN202322692536U CN220922260U CN 220922260 U CN220922260 U CN 220922260U CN 202322692536 U CN202322692536 U CN 202322692536U CN 220922260 U CN220922260 U CN 220922260U
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- sleeve puller
- cage
- sleeve
- valve
- puller
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- 238000000605 extraction Methods 0.000 claims abstract description 17
- 230000004323 axial length Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 210000000078 claw Anatomy 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000000670 limiting effect Effects 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model provides a cage extraction tool, comprising: the telescopic sleeve puller comprises a sleeve puller body, an extension part and jackscrews, wherein the extension part is arranged at the top of the sleeve puller body, threaded through holes are symmetrically formed in two ends of the extension part, the threaded through holes are formed along the axial direction of the sleeve puller body, the jackscrews are matched with the threaded through holes and are screwed with the threaded through holes, and two flexible pieces used for clamping the periphery of a valve cage are arranged in the sleeve puller body. The utility model can solve the problem of uneven stress caused by small stress area of the traditional pull claw type pull horse, and can safely, efficiently and quickly realize the disassembly of the cage valve.
Description
Technical Field
The present utility model relates to the field of cage extraction tools, and more particularly, to a cage extraction tool.
Background
The cage valve has an important function on an offshore oil and gas production platform and is widely used for an offshore oil and gas production platform gas production system. The main structure is as follows: the valve body, the valve rod, the valve core and the valve cage are formed, so that the valve is convenient and quick to detach compared with a common valve, and the valve is widely used on offshore oil and gas production platforms. The valve in the form is most commonly arranged on a gas production tree gas nipple of an offshore oil and gas production platform, the gas production tree gas nipple is communicated with a gas production tree body and a production manifold, and is a main regulating valve of the offshore oil and gas production platform, so that the integrity of the gas production tree gas nipple valve is maintained, the utilization rate of the gas nipple valve is ensured, and the valve has profound significance for long-term safe and stable production of the offshore oil and gas production platform.
In the production process of the high-temperature high-pressure oil-gas field, the gas nozzles of the gas production tree are severely eroded, and after the erosion reaches a certain degree, the gas nozzles cannot play a role in adjusting the flow, so that disassembly maintenance measures are required for the gas nozzle valves, but the conventional maintenance tools cannot quickly disassemble the gas nozzles of the gas production tree. The main difficulty of disassembly and overhaul of the air tap valve is that the valve cage and the valve body are often assembled by adopting interference fit, the fit mode is further compressed in the production process, the valve cage is tightly clamped in the middle of the valve body during disassembly, at the moment, a fixed point is required to be found right above the valve body by a traditional puller, the valve cage is clamped by a puller, the valve cage is taken out in a pulling mode, and the valve cage can be taken out in the mode, but the following problems exist:
1. The traditional pull claw type pull horse generally comprises a plurality of pull claws, a plurality of pull claws with even stress are connected on a pull claw ring at the top, a threaded through hole is formed in the center of the top of the pull claw ring, a high-strength bolt penetrates through the center of the pull claw ring, the bolt vertically acts on a fixing platform, barbs on the pull claws act below a boss of a taken-out part during working, the fixing platform is pushed back through the bolt, the taken-out part is pulled up continuously, and finally the two parts in interference fit are completely separated. However, in the valve of the gas production tree on the offshore oil and gas production process, the valve body and the valve cage in the valve are excessively deformed due to the working conditions of high temperature and high pressure of an oil and gas well, water and sand, the stress area of a traditional puller is small, the force transmitted in the pulling process is limited, the force of a tool acting on a component to be pulled is far smaller than the static friction force between the two components, and the function of separating the two components cannot be achieved.
2. The two parts in interference fit are detached by using the traditional pull claw type pull horses, the parts are used by being matched with the fixed platform, the parts are placed on the fixed platform in the middle of the parts to be taken out when in use, and the parts are taken out by the relative movement of the two parts in the pull claw type pull horses under the pull claw type pull horses.
Disclosure of utility model
In order to solve the problems, the utility model provides a valve cage taking-out tool, which can solve the problem of uneven stress caused by small stress area of the traditional pull claw type puller by clamping the valve cage through a flexible piece in the sleeve puller, has a simple structure, and can quickly realize online disassembly of a cage valve.
To achieve the above object, a cage extracting tool of the present utility model includes: the telescopic sleeve puller comprises a sleeve puller body, an extension part and jackscrews, wherein the extension part is arranged at the top of the sleeve puller body, threaded through holes are symmetrically formed in two ends of the extension part, the threaded through holes are formed along the axial direction of the sleeve puller body, the jackscrews are matched with the threaded through holes and are screwed with the threaded through holes, and two flexible pieces used for clamping the periphery of a valve cage are arranged in the sleeve puller body.
According to the technical scheme, the sleeve puller stretches into the valve body and is sleeved with the valve cage in the valve body, then the sleeve puller rotates around the center of the sleeve puller to clamp the periphery of the valve cage, then jackscrews are screwed into two threaded through holes of the sleeve puller respectively, when the jackscrews are abutted to one side of the valve cage, the screwing depth difference of the jackscrews on two sides is reduced as much as possible, so that the sleeve puller is reversely jacked in the vertical direction as much as possible, the valve cage is detached, and after the valve cage is detached, the valve cage can be detached from the sleeve puller only by reversely rotating the valve cage in the sleeve puller for one circle.
In a preferred embodiment, in order to ensure that the sleeve puller can extend into the valve body and pass through the top of the valve cage, the sleeve puller has a hollow cylindrical structure, the outer diameter of the sleeve puller is smaller than the inner diameter of the valve body, and the inner diameter of the sleeve puller is larger than the outer diameter of the valve cage.
As a preferable scheme, in order to install two flexible pieces, the inner periphery of the bottom of the sleeve puller is provided with an annular groove, two slots are symmetrically arranged on two sides of the annular groove, the flexible pieces are arranged in the annular groove, one ends of the flexible pieces penetrate out of the slots, the two flexible pieces are arranged in a central symmetry mode, the stress balance of the two flexible pieces is guaranteed, the two flexible pieces are clung to the periphery of the valve cage, the stress area is greatly increased, and the space requirement is low.
As a preferable scheme, in order to ensure that the flexible piece is not broken and damaged after being stressed, the flexible piece is a high-strength steel wire rope, the flexible piece is formed by connecting the tail ends of two semicircular parts with unequal radiuses, the semicircular part with larger diameter of the flexible piece is arranged in the annular groove, the tail end of the semicircular part with smaller diameter of the flexible piece is abutted with the outer wall of the sleeve puller, in an initial state, most of the section of the flexible piece is arranged at the outer side of the sleeve puller, and when the sleeve puller stretches into the valve body and sleeves the valve cage in the valve body, the flexible piece starts to rotate and is driven by the valve cage, and the flexible piece is slowly pulled out from the inner side of the sleeve puller and is clamped at the periphery of the valve cage along with the relative rotation of the valve cage.
In a preferred embodiment, the semicircular part of the flexible member with a larger diameter is adapted to the diameter of the cage in order to clamp the flexible member to the circumferential side of the cage.
As a preferred solution, in order to enable the jackscrew to jack up the sleeve puller, the axial length of the jackscrew is greater than that of the sleeve puller, and in the process of screwing the jackscrew, the heights between the jackscrews and the sleeve puller at two sides need to be observed to ensure the stress balance at two sides.
As a preferable scheme, the extension part is fixed at the top of the sleeve puller, an opening corresponding to the inner hole of the sleeve puller is arranged in the middle of the extension part, two ends of the extension part extend outwards, a threaded through hole in the extension part is positioned at the outer side of the sleeve puller in the vertical direction, so that a jackscrew can be tightly propped at the top of the valve body and provide a reaction force for the sleeve puller after being screwed into the threaded through hole, the extension part is provided with a circular opening matched with the inner hole of the sleeve puller, the position and clamping state of the valve cage can be observed through the opening, and the fault tolerance is improved.
As a preferred solution, the extension is arranged perpendicular to the axial direction of the sleeve puller in order to ensure that the sleeve puller is forced in the vertical direction and is lifted.
As a preferred solution, the jackscrews are hexagonal bolts in order to ensure that they can withstand forces in the axial direction.
As a preferable scheme, in order to facilitate the sleeve puller to enter the valve body, the outer wall of the bottom of the sleeve puller is provided with a chamfer.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the valve cage is clamped through the sleeve puller and the flexible pieces arranged in the sleeve puller, and then the sleeve puller drives the valve cage to be separated from the valve body through the jackscrews at two sides, so that the requirement on space is low, and the compatibility is strong.
2. According to the utility model, the flexible piece is used for clamping the peripheral side of the valve cage, so that the stress area is large, the valve cage is uniformly stressed in the separation process, and the valve cage is quickly disassembled.
Drawings
FIG. 1 is an exploded view of the cage extraction tool of the present utility model;
FIG. 2 is a cross-sectional view of a sleeve puller and extension;
FIG. 3 is an enlarged partial view of portion A of FIG. 2;
FIG. 4 is a schematic illustration of the construction of the cage extraction tool of the present utility model;
FIG. 5 is a schematic illustration of the cage extraction tool of the present utility model in operation;
In the figure: sleeve puller 1; an annular groove 101; a slot 102; an extension 2; a threaded through hole 201; an opening 202; a jackscrew 3; a flexible member 4; a cage 5; a valve body 6.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and it is possible for those of ordinary skill in the art to understand the specific meaning of the above terms according to the specific circumstances.
The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:
Example 1:
A cage extraction tool is provided as in fig. 1-5, the tool comprising: the telescopic sleeve comprises a telescopic sleeve body 1, an extension part 2 and a jackscrew 3, wherein the extension part 2 is arranged at the top of the telescopic sleeve body 1, threaded through holes 201 are symmetrically formed in two ends of the extension part 2, the threaded through holes 201 are arranged along the axial direction of the telescopic sleeve body 1, the jackscrew 3 is matched with the threaded through holes 201 and screwed with the threaded through holes 201, two flexible pieces 4 used for clamping the periphery of a valve cage 5 are arranged in the telescopic sleeve body 1, in the embodiment, the telescopic sleeve body 1 and the extension part 2 are of an integrally formed metal structure and can be formed by casting or milling, the two flexible pieces 4 are sleeved in the telescopic sleeve body 1, the two flexible pieces 4 are symmetrically arranged about the center, the two flexible pieces 4 can move in the telescopic sleeve body 1, and in order to ensure the stress balance in the process that the telescopic sleeve body 1 is jacked up, the two threaded through holes 201 are symmetrically arranged about the telescopic sleeve body 1.
In this embodiment, the cage 5 is one of the main components of the valve, and its functions are sealing, isolating and supporting, and the cage is composed of an upper cover, a lower cover, a stuffing box, etc., and the upper cover: the upper cover with holes is used for installing stuffing box or oil drain screw plug, and the upper cover without holes is used for fixing connecting bolts. The shape of the upper cover meets the design requirement, is vertical to the axis of the pipeline, and for the regulating valve for plugging under pressure, the upper end face of the regulating valve faces outwards; for the regulating valve without pressure leakage stopping, the upper end face of the regulating valve can face inwards or outwards, and the thickness of the upper cover meets the requirements of strength and rigidity. For the convenience of disassembly and cleaning, a groove or flange structure is arranged at the flange joint, but the depth of the groove is not less than 3mm; the width of the flange is not more than 4mm, and the flexible piece 4 is matched with the groove to realize clamping; and (3) a lower cover: the lower cover with holes is mainly used for installing stuffing boxes or oil drain screw plugs; the nonporous lower cover is provided with connecting bolts for fixing parts such as connecting bolts, positioning pins and the like between the upper shell and the lower shell; and (3) filling: the choice of suitable filler materials depends on the temperature of use: the normal temperature is suitable for the temperature range of 0-200 ℃; the high temperature type filling device is suitable for a temperature range higher than 200 ℃, and different materials are selected for filling according to different media: polytetrafluoroethylene F4 for water, polyurethane rubber PTFE for gas, and asbestos fiber wound gasket GRC for oil.
Specifically, the sleeve puller 1 is of a hollow cylinder structure, the outer diameter of the sleeve puller 1 is smaller than the inner diameter of the valve body 6, the inner diameter of the sleeve puller 1 is larger than the outer diameter of the valve cage 5, and in this embodiment, the inner diameter of the sleeve puller 1 is 0.5-1mm larger than the boss outer diameter of the valve cage 5.
Specifically, the inner circumference of the bottom of the sleeve puller 1 is provided with an annular groove 101, two slots 102 are symmetrically arranged on two sides of the annular groove 101, one end of the flexible member 4 passes through the slots 102, the flexible member 4 is arranged in the annular groove 101, and one end of the flexible member 4 passes through the slots 102 and is arranged in the annular groove 101, and the other end of the flexible member 4 is arranged on the outer circumference of the sleeve puller 1.
Specifically, the flexible member 4 is a high-strength steel wire rope, the flexible member 4 is formed by connecting the ends of two semicircular parts with unequal radii, the semicircular part with a larger diameter of the flexible member 4 is arranged in the annular groove 101, and the end of the semicircular part with a smaller diameter of the flexible member 4 is abutted to the outer wall of the sleeve puller 1.
Specifically, the great semicircle portion of flexible piece 4 diameter and the diameter adaptation of valve cage 5, in this embodiment, two flexible piece 4 chucking is in the recess of valve cage 5 periphery, maximize stress area, and because flexible piece 4 sets up about central symmetry, can guarantee that the dismantlement process atress of valve cage 5 is even, effectively avoids local atress too big and causes the damage.
Specifically, the axial length of the jackscrew 3 is greater than that of the sleeve puller 1, and in this embodiment, after the jackscrew 3 is completely screwed into the threaded through hole 201, the sleeve puller 1 is ejected out of the valve body 6 to meet the disassembly requirement of the valve cage 5.
Specifically, the extension portion 2 is fixed on the top of the sleeve puller 1, an opening 202 corresponding to the inner hole of the sleeve puller 1 is provided in the middle of the extension portion 2, two ends of the extension portion 2 extend outwards, and a threaded through hole 201 on the extension portion 2 is located at the outer side of the sleeve puller 1 in the vertical direction.
In particular, the extension 2 is arranged perpendicularly to the axial direction of the sleeve puller 1, in this embodiment the extension 2 acts as a connecting element for lifting the sleeve puller 1, which is arranged perpendicularly so that a linear movement is maintained during the lifting of the sleeve puller 1.
The working process of the valve body taking-out tool of the embodiment is as follows:
The sleeve puller 1 is put deep into the valve body 6 and sleeved with the valve cage 5 in the valve body 6, then the sleeve puller 1 rotates along with the direction of the tail end of the flexible piece 4 for one circle, whether the valve cage 5 is clamped or not is observed through the opening 202, after clamping is finished, the jackscrews 3 are respectively screwed into the threaded through holes 201 on two sides of the extension part 2 by using a spanner, after the jackscrews 3 contact with the upper surface of the valve body 6, the screwing speed is reduced, the upper part of the sleeve puller 1 is checked from the side to be horizontal, the jackscrews 3 on two sides are screwed for one quarter circle each time, the valve cage 5 is carefully checked to be in slow relative movement with the valve body 6, and finally the valve cage 5 is completely taken out of the valve body 6.
Example 2:
the embodiment is similar to embodiment 1, except that in this embodiment, a hand-twisting ring is welded at the top of the jackscrew 3, so that both hands are convenient to twist the jackscrew 3 at the same time, the lifting heights of both sides are consistent, and further, the sleeve puller 1 is ensured to be lifted vertically.
Example 3:
The present embodiment is similar to embodiment 1, except that in this embodiment, the jackscrew 3 is a hexagonal bolt, and in this embodiment, the hexagonal bolt is made of carbon steel, and the material has the characteristics of high strength, stable mechanical properties, and substantial price.
Specifically, the outer wall of the bottom of the sleeve puller 1 is provided with a chamfer, and in this embodiment, the chamfer is arranged so that the sleeve puller 1 stretches into the valve body 6.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and are not intended to limit the scope of the utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. A cage extraction tool, comprising: sleeve puller (1), extension (2) and jackscrew (3), extension (2) are located the top of sleeve puller (1), the both ends symmetry of extension (2) are equipped with screw thread through-hole (201), screw thread through-hole (201) are followed the axial setting of sleeve puller (1), jackscrew (3) with screw thread through-hole (201) adaptation and with its screw thread spin, be equipped with in sleeve puller (1) and be used for chucking valve cage (5) two flexible pieces (4) of periphery.
2. A valve cage extraction tool according to claim 1, characterized in that the sleeve puller (1) is of hollow cylindrical construction, the sleeve puller (1) having an outer diameter smaller than the inner diameter of the valve body (6), the sleeve puller (1) having an inner diameter larger than the outer diameter of the valve cage (5).
3. The valve cage extraction tool according to claim 2, wherein an annular groove (101) is formed in the inner periphery of the bottom of the sleeve puller (1), two slotted holes (102) are symmetrically formed in two sides of the annular groove (101), and the flexible piece (4) is arranged in the annular groove (101) and one end of the flexible piece penetrates out of the slotted holes (102).
4. A cage extraction tool according to claim 3, characterized in that the flexible member (4) is a high-strength steel wire rope, the flexible member (4) is formed by connecting the ends of two semicircular parts with unequal radiuses, the semicircular part with larger diameter of the flexible member (4) is arranged in the annular groove (101), and the end of the semicircular part with smaller diameter of the flexible member (4) is abutted with the outer wall of the sleeve puller (1).
5. A cage extraction tool according to claim 4, characterized in that the larger diameter semicircle of the flexible member (4) is adapted to the diameter of the cage (5).
6. A cage extraction tool according to claim 1, characterized in that the axial length of the jackscrew (3) is greater than the axial length of the sleeve puller (1).
7. The valve cage extraction tool according to claim 1, wherein the extension part (2) is fixed at the top of the sleeve puller (1), an opening (202) corresponding to an inner hole of the sleeve puller (1) is arranged in the middle of the extension part (2), two ends of the extension part (2) extend outwards, and a threaded through hole (201) in the extension part (2) is positioned at the outer side of the sleeve puller (1) in the vertical direction.
8. A cage extraction tool according to claim 7, characterized in that the extension (2) is arranged perpendicular to the axial direction of the sleeve puller (1).
9. A cage extraction tool according to claim 1, characterized in that the jackscrew (3) is a hex bolt.
10. A cage extraction tool according to claim 1, characterized in that the bottom outer wall of the sleeve puller (1) is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322692536.1U CN220922260U (en) | 2023-10-08 | 2023-10-08 | Valve cage taking-out tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322692536.1U CN220922260U (en) | 2023-10-08 | 2023-10-08 | Valve cage taking-out tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220922260U true CN220922260U (en) | 2024-05-10 |
Family
ID=90966372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322692536.1U Active CN220922260U (en) | 2023-10-08 | 2023-10-08 | Valve cage taking-out tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220922260U (en) |
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2023
- 2023-10-08 CN CN202322692536.1U patent/CN220922260U/en active Active
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