CN212718206U - Cryogenic axial flow check valve with online maintenance function - Google Patents
Cryogenic axial flow check valve with online maintenance function Download PDFInfo
- Publication number
- CN212718206U CN212718206U CN202020946548.6U CN202020946548U CN212718206U CN 212718206 U CN212718206 U CN 212718206U CN 202020946548 U CN202020946548 U CN 202020946548U CN 212718206 U CN212718206 U CN 212718206U
- Authority
- CN
- China
- Prior art keywords
- valve
- guide sleeve
- flow guide
- clack
- water conservancy
- 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.)
- Active
Links
Images
Abstract
The utility model provides an axial-flow type check valve cryrogenic with overhaul function on line, which comprises a valve body, a valve seat, the water conservancy diversion cover, the valve gap, the valve clack, the valve gap is facial make-up type valve gap, be equipped with a brace rod on the valve gap, the inside two brace rods that are equipped with of valve body, be equipped with the support groove that three brace rod corresponds on the water conservancy diversion cover, be equipped with the anti-rotation piece fixed with screw II and water conservancy diversion cover in the water conservancy diversion cover support groove, the inside leading truck that is equipped with of water conservancy diversion cover, leading truck head and afterbody are equipped with the bearing, be equipped with the spring between leading truck and the valve clack, spring mounting is among the spacing hole of leading truck and valve clack, be equipped with protruding muscle on valve clack and the water conservancy diversion cover, be equipped with the round. The beneficial effects of the utility model, through the design of upper assembling type valve gap, can realize the online maintenance function.
Description
Technical Field
The utility model relates to a check valve, especially a cryrogenic axial-flow type check valve with online maintenance function.
Background
In the LNG receiving station, the cryogenic axial flow type check valve is used for conveying an outlet of an pump and an outlet of a compressor unit of the LNG, and plays a role in preventing media from flowing backwards. The deep cooling axial flow check valve adopts butt welding connection mode according to the requirement of a receiving station, after a general axial flow check valve is welded on a pipeline, when a valve breaks down (acts unsmooth, sealing failure and the like) and needs to be overhauled, the valve can only be integrally cut out for maintenance, because the valve is cut, the structural length can be shortened, after maintenance, the valve needs to be subjected to surfacing welding at two ends of the valve and processed into corresponding groove envelope lines to be welded on the pipeline again, and the requirement of online maintenance function cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to overcome the prior art problem, the utility model provides a cryrogenic axial-flow type check valve with online maintenance function.
The technical proposal of the utility model is that the cryogenic axial flow check valve with the online maintenance function comprises a valve body, a valve seat, a flow guide sleeve, a valve cover and a valve clack, wherein the valve cover is a top-mounted valve cover, the valve cover is provided with a support rib, the valve body is internally provided with two support ribs, the flow guide sleeve is provided with support grooves corresponding to three support ribs, the support groove of the flow guide sleeve is internally provided with an anti-rotation block fixed with the flow guide sleeve by a screw II, the inside of the flow guide sleeve is provided with a guide frame, the head part and the tail part of the guide frame are provided with bearings, a spring is arranged between the guide frame and the valve clack, the spring is arranged in a limit hole between the guide frame and the valve clack, the valve clack and the flow guide sleeve are provided with convex ribs, the convex ribs are provided with corresponding pin shaft holes, the tail part of the flow guide sleeve is provided with, and the connection is fixed through a fastener.
Furthermore, the three support ribs are uniformly distributed, and the angle between every two support ribs is 120 degrees.
Further, the flooding plug is a back-to-back flooding plug.
The utility model has the advantages that:
the online maintenance function can be realized through the design of the upper-mounted valve cover;
the guide sleeve is designed into a single part and is arranged on the supporting rib inside the valve body, so that the detachable function is realized. The axial direction of the flow guide sleeve is limited by the valve body and the support rib on the valve cover, and an anti-rotation block is arranged in the support groove of the flow guide sleeve to limit the flow guide sleeve to rotate under the action of a medium;
the valve clack and the flow guide sleeve are provided with protruding ribs which are provided with corresponding pin shaft holes, the spring is tightened by a nut, so that the valve clack and the flow guide sleeve are fixed at a certain position and then taken out;
the valve seat is designed into a double-sealing structure of a metal winding pad and a flooding plug, so that the sealing is more reliable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a perspective view of the rotation prevention block;
FIG. 4 is a perspective view of two support ribs inside the valve body;
FIG. 5 is a schematic view of a sealing structure between a valve body and a valve seat;
FIG. 6 is a side view of the valve cover;
fig. 7 is a schematic sectional view of three support ribs.
In the figure: 1. a valve body; 2. a flow guide cone 2; 3. a flow guide sleeve; 4. a guide shaft; 5. a guide frame; 6. a spring; 7, a bearing; 8. a valve flap; 9. a valve seat retainer; 10. a screw I; 11. a valve seat; 12. a metal wound gasket; 13. flooding and plugging; 14 winding the gasket; 15 a fastener; 16. a valve cover; 17, a pin shaft; 18. a nut; 19. a rotation prevention block; 20. and a screw II.
Detailed Description
As shown in the figure, the cryogenic axial flow check valve with the online maintenance function comprises a valve body 1, a valve seat 11, a flow guide sleeve 3, a valve cover 16 and a valve clack 8, wherein the valve cover 16 is an upper-mounted valve cover, a support rib is arranged on the valve cover 16, two support ribs are arranged inside the valve body 1, three support grooves corresponding to the three support ribs are arranged on the flow guide sleeve 3, the three support ribs are uniformly distributed, the angle between every two support ribs is 120 degrees, and the support and axial limiting effects are achieved on the flow guide sleeve 3; an anti-rotation block 19 fixed with the guide sleeve 3 by a screw II 20 is arranged in the support groove of the guide sleeve 3, so that the guide sleeve 3 is prevented from rotating under the action of a medium; the guide frame 5 is arranged in the guide sleeve 3, the bearings 7 are arranged at the head and the tail of the guide frame 5, the spring 6 is arranged between the guide frame 5 and the valve clack 8, the spring 6 is arranged in the limiting holes of the guide frame 5 and the valve clack 8, the guide cone 2 is arranged at the tail of the guide sleeve 3, when a medium flows back, the medium can only act on the valve clack 8 through the guide cone 2, a certain impact force is reduced, and the slow closing effect is achieved; the valve clack 8 and the flow guide sleeve 3 are provided with convex ribs, the convex ribs are provided with corresponding pin shaft holes, and the spring is tightened by using a pin shaft and a nut, so that the valve clack and the flow guide sleeve are fixed at a certain position and are convenient to take out; a metal winding pad 12 and a flooding plug 13 are arranged between the valve seat 11 and the valve body 1 and are fixed through a valve seat fixer 9 and a screw I10, and when the metal winding pad 12 leaks, the flooding plug 13 plays a role in compensating the leakage; a winding gasket 14 is arranged between the valve body 1 and the valve cover 16, the winding gasket 14 is fixedly connected through a fastening piece 15, and the compression amount of the winding gasket 14 is controlled to realize sealing through the principle of quantitative compression.
When the valve is internally jammed or fails in sealing, the online maintenance function is realized through the following steps:
step 1: the fastening piece 15 between the valve cover 16 and the valve body 1 is disassembled, and the valve cover 16 and the winding sealing gasket 14 between the valve cover 16 and the winding sealing gasket are removed.
Step 2: the valve clack 8 and the guide sleeve 3 are provided with corresponding pin shaft holes in which pin shafts 17 are arranged, the tail parts of the pin shafts 17 are provided with threads, the nut 18 is utilized to tighten the pretightening force of the spring, so that the valve clack 8 is opened to a certain position and fixed with the guide sleeve 3, and then the valve clack 8 and the guide sleeve 3 are integrally taken out from the supporting ribs in the valve body and taken out of the valve cavity for next-step disassembly.
And step 3: the nut 18 is removed, the valve flap 8 is removed from the guide frame 5, and the spring 8 is removed.
And 4, step 4: and (3) disassembling the guide frame 5 and the flow guide sleeve 3, taking down the guide frame 5, and disassembling the bearing 7 at the head and the tail of the guide frame 5.
And 5: if the valve seat sealing piece needs to be replaced, the screw I10 on the valve seat fixer 9 is detached, and then the valve seat fixer 9 is screwed out of the valve body 1.
Step 6: the valve seat 11 is removed, followed by the metal wound gasket 12 and the flooding plug 13, completing the valve disassembly.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (3)
1. A deep cooling axial flow type check valve with online maintenance function comprises a valve body, a valve seat, a flow guide sleeve, a valve cover and a valve clack, and is characterized in that the valve cover is a top-mounted valve cover, a support rib is arranged on the valve cover, two support ribs are arranged inside the valve body, support grooves corresponding to the three support ribs are arranged on the flow guide sleeve, an anti-rotation block fixed with a screw II and the flow guide sleeve is arranged in each support groove of the flow guide sleeve, a guide frame is arranged inside the flow guide sleeve, bearings are arranged at the head and the tail of the guide frame, a spring is arranged between the guide frame and the valve clack, the spring is arranged in a limiting hole of the guide frame and the valve clack, a flow guide cone is arranged at the tail of the flow guide sleeve, a protruding rib is arranged on the valve clack and the flow guide sleeve, a corresponding pin shaft hole is arranged on the protruding rib, a metal winding, and a winding gasket is arranged between the valve body and the valve cover and is fixedly connected with the valve cover through a fastener.
2. The cryogenic axial flow check valve with on-line maintenance function as claimed in claim 1, wherein said three support ribs are uniformly distributed with an angle of 120 ° between each two support ribs.
3. The cryogenic axial flow check valve with in-line service capability of claim 1 wherein said flooding plug is a back-to-back flooding plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946548.6U CN212718206U (en) | 2020-05-29 | 2020-05-29 | Cryogenic axial flow check valve with online maintenance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946548.6U CN212718206U (en) | 2020-05-29 | 2020-05-29 | Cryogenic axial flow check valve with online maintenance function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212718206U true CN212718206U (en) | 2021-03-16 |
Family
ID=74947964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020946548.6U Active CN212718206U (en) | 2020-05-29 | 2020-05-29 | Cryogenic axial flow check valve with online maintenance function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212718206U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280160A (en) * | 2021-04-16 | 2021-08-20 | 上海阀门厂股份有限公司 | Normally open structure of detachable axial flow check valve |
| CN114017509A (en) * | 2021-11-16 | 2022-02-08 | 上海阀门厂股份有限公司 | Axial flow valve easy to disassemble |
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
-
2020
- 2020-05-29 CN CN202020946548.6U patent/CN212718206U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
| CN113280160A (en) * | 2021-04-16 | 2021-08-20 | 上海阀门厂股份有限公司 | Normally open structure of detachable axial flow check valve |
| CN114017509A (en) * | 2021-11-16 | 2022-02-08 | 上海阀门厂股份有限公司 | Axial flow valve easy to disassemble |
| CN114017509B (en) * | 2021-11-16 | 2023-09-29 | 上海阀门厂股份有限公司 | Easy-to-detach axial-flow valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212718206U (en) | Cryogenic axial flow check valve with online maintenance function | |
| CN100590332C (en) | Elliptical sealing surface for butterfly valve | |
| US8100638B2 (en) | Centering device | |
| EP0464050A1 (en) | Fluid-tight joints. | |
| CN111664273A (en) | Cryogenic axial flow check valve with online maintenance function | |
| US8661667B2 (en) | Hinge arm repair | |
| CN210423843U (en) | Anti-rotation axial flow check valve | |
| CN104405575B (en) | Improved hydraulic motor and assembly test method thereof | |
| CN202001646U (en) | Cage type regulating valve with single seat | |
| CN112283386A (en) | Ultra-low temperature top-mounted seriation ball valve that floats | |
| CN210661524U (en) | Copious cooling axial flow type check valve structure with supporting guide shaft | |
| CN113280160B (en) | Detachable axial-flow check valve normally open structure | |
| KR20120019725A (en) | Butterfly valve | |
| CN2533308Y (en) | Adjustable front- and rear- seal gap and easy-to-dismount residue slurry pump | |
| CN209781769U (en) | 140MPa superhigh pressure quick assembly disassembly full bore check valve | |
| CN210623659U (en) | Novel heating power pipe network welding ball valve | |
| CN218031606U (en) | Low-temperature axial flow type check valve | |
| CN202554791U (en) | Fire monitor slewing mechanism with worm and worm gear transmission | |
| CN111927988A (en) | Axial flow type check valve capable of ensuring concentric precision by adopting conical surface matching structure | |
| CN219841091U (en) | Steam extraction check valve | |
| CN206513854U (en) | A kind of good valve mechanism of seal wear-resistant performance | |
| CN216519632U (en) | High-performance butterfly valve capable of compensating centering of butterfly plate | |
| JP4607494B2 (en) | Vertical shaft water turbine | |
| CN115325194B (en) | Energy-saving valve easy and convenient to disassemble, assemble and maintain | |
| CN216242507U (en) | Improved lifting check valve for four-time steam extraction, supply and deaerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |