CN212206574U - Axial-flow check valve is in-service to close valve action test structure - Google Patents
Axial-flow check valve is in-service to close valve action test structure Download PDFInfo
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- CN212206574U CN212206574U CN202021265166.3U CN202021265166U CN212206574U CN 212206574 U CN212206574 U CN 212206574U CN 202021265166 U CN202021265166 U CN 202021265166U CN 212206574 U CN212206574 U CN 212206574U
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Abstract
The utility model discloses an axial-flow type check valve for valve on-line measuring field closes valve action test structure on labour, the medium bearing surface of its valve clack is connected with a guide arm, the guide arm is pegged graft downtheholely at the guide arm, be equipped with one on the radome fairing with the pilot hole of guide arm hole intercommunication, the position that corresponds with this pilot hole on the valve body is equipped with a test interface, a plurality of drainage holes have been seted up on the radome fairing simultaneously, the one end and the guide arm jogged joint in drainage hole, the other end accesss to the medium bearing surface of valve clack. The utility model discloses can convenient efficient carry out the test to the valve closing action of axial flow type check valve.
Description
Technical Field
The utility model relates to an axial-flow type check valve closes valve action test structure in labour for valve test field.
Background
Generally, the check valve performance test which runs by means of medium force needs to install a valve to be tested on a special test bench for testing. For equipment welded and connected with the valve and the pipeline, the pipeline and the valve need to be cut and welded during maintenance every time, for a nuclear power station or some important equipment, the time of a test window is too long, the welding, nondestructive testing and testing period after the valve is reset is too complex, and the risk is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's not enough, provide an axial-flow type check valve and close valve action test structure in labour, it can be convenient efficient to the valve action of closing of axial-flow type check valve and carry out test.
One technical scheme for achieving the above purpose is as follows: an in-service valve closing action test structure of an axial flow check valve comprises a valve body and a valve clack positioned in a valve cavity, wherein the valve clack is connected with a fairing;
the middle part of the medium pressure bearing face of the valve clack is connected with a guide rod, the guide rod is inserted in a guide rod hole arranged in the valve cavity, a test hole communicated with the guide rod hole is radially arranged on the fairing, a test interface connected with the test hole is arranged at a position, corresponding to the test hole, on the valve body, a plurality of drainage holes are formed in the fairing, one end of each drainage hole is connected with the guide rod hole, and the other end of each drainage hole is communicated with the medium pressure bearing face of the valve clack.
Furthermore, a gap is reserved between the end part of the guide rod and the bottom of the guide rod hole, and the guide rod does not seal the test hole.
Furthermore, a return spring is arranged on the guide rod and is connected with the two ends of the guide rod through the return spring.
The utility model discloses an axial-flow check valve closes valve action test structure in labour, through set up suitable medium and pressure input channel on axial-flow check valve's radome fairing and link to each other with the test interface on the valve body, this passageway can be with the medium of valve external input and pressure direct feedback to the valve clack back and guide arm end, experimental medium power drive valve clack and guide arm are closed to realized need not to demolish valve equipment from pipe-line system and just can be convenient the nimble requirement of detection valve clack action. After the test is finished, the valve can be recovered to work normally only by isolating the test interface. The in-service test has a simple structure, all test channels are arranged in the pressure bearing area (except for the interfaces), the installation and the operation are simple, the in-service maintenance period is greatly reduced, and the system utilization rate is improved.
The utility model discloses an axial-flow check valve closes valve action test structure in labour has following advantage:
1) the test system has simple and compact structure and is easy and convenient to operate during in-service test.
2) No special test system is required.
3) The valve need not be removed from the piping system.
4) And the time for repairing the window is saved.
5) The maintenance cost is reduced.
6) After adopting this structure, in-service test can directly detect on pipe-line system, therefore the testing result is more reliable.
Drawings
Fig. 1 is the structure diagram of the axial flow type check valve in-service valve closing action test structure of the utility model.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made by specific embodiments:
referring to fig. 1, the valve clack 1 of the axial flow check valve in-service valve closing action test structure of the present invention is connected to a fairing 2, a guide rod 3 is connected to the middle of the medium bearing surface of the valve clack 1, and the guide rod 3 is inserted into a guide rod hole 4 disposed inside the valve cavity. A test hole 5 communicated with the guide rod hole 4 is radially formed in a wider support rib of the fairing 2, and a test interface 6 connected with the test hole 5 is arranged on the valve body at a position corresponding to the test hole 5. The test interface 6 is communicated with an external medium input source to supply a test medium with stable pressure when a check valve closing operation test is performed. A gap is left between the end part of the guide rod 3 and the bottom of the guide rod hole 4, and the guide rod 3 does not seal the test hole 5. The guide rod 3 is provided with a return spring 8, and the return spring 8 is connected with two ends of the guide rod 3. Meanwhile, 3 drainage holes 7 (not all shown in the figure) are formed in the fairing 2, one end of each drainage hole 7 is connected with the guide rod hole 4, and the other end of each drainage hole is communicated with the medium pressure bearing face of the valve clack 1, so that a medium for test input through the test interface 6 can directly act on the medium pressure bearing face of the valve clack 1 through the drainage holes 7.
The valve clack 1 is in a normally open state under the normal working condition before the test starts. When a valve closing action test is carried out, a test medium is input into a test hole 5 through a test interface 6 on a valve body and enters a valve cavity, a part of the test medium enters a guide rod hole 4, a piston cavity is formed between the guide rod hole 4 and a guide rod 3, the pressure of the test medium pushes the guide rod 3 to move towards the closing direction of the valve clack 1, the other part of the test medium enters a drainage hole 7, the test medium moving at a high speed is flushed out from the drainage hole 7, and the impact force of the test medium directly acts on a medium pressure bearing surface of the valve clack 1 to drive the valve clack 1 to move towards the closing direction of the valve. The valve clack 1 performs a valve closing action under the combined action of the two forces. After the service test is finished, the input of a test medium is cut off, and the valve clack assembly resets under the action of the return spring 8.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (3)
1. The utility model provides an axial-flow check valve closes valve action test structure in labour, includes the valve body and is located the valve clack of valve intracavity, and this valve clack is connected its characterized in that with the radome fairing:
the middle part of the medium pressure bearing face of the valve clack is connected with a guide rod, the guide rod is inserted in a guide rod hole arranged in the valve cavity, a test hole communicated with the guide rod hole is radially arranged on the fairing, a test interface connected with the test hole is arranged at a position, corresponding to the test hole, on the valve body, a plurality of drainage holes are formed in the fairing, one end of each drainage hole is connected with the guide rod hole, and the other end of each drainage hole is communicated with the medium pressure bearing face of the valve clack.
2. The in-service valve closing action test structure of an axial flow check valve according to claim 1, wherein a gap is left between the end of the guide rod and the bottom of the guide rod hole, and the guide rod does not close the test hole.
3. The in-service valve closing action test structure of the axial flow check valve according to claim 1, wherein a return spring is arranged on the guide rod, and the two ends of the guide rod are connected through the return spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021265166.3U CN212206574U (en) | 2020-07-01 | 2020-07-01 | Axial-flow check valve is in-service to close valve action test structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021265166.3U CN212206574U (en) | 2020-07-01 | 2020-07-01 | Axial-flow check valve is in-service to close valve action test structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212206574U true CN212206574U (en) | 2020-12-22 |
Family
ID=73817992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021265166.3U Active CN212206574U (en) | 2020-07-01 | 2020-07-01 | Axial-flow check valve is in-service to close valve action test structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212206574U (en) |
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2020
- 2020-07-01 CN CN202021265166.3U patent/CN212206574U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210519 Address after: No. 111, Zhongbai Road, Jiading District, Shanghai, 201814 Patentee after: SHANGHAI VALVE FACTORY Co.,Ltd. Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: No. 111, Zhongbai Road, Jiading District, Shanghai, 201814 Patentee before: SHANGHAI VALVE FACTORY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 111, Zhongbai Road, Jiading District, Shanghai, 201814 Patentee after: SHANGHAI VALVE FACTORY CO.,LTD. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 111, Zhongbai Road, Jiading District, Shanghai, 201814 Patentee before: SHANGHAI VALVE FACTORY CO.,LTD. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |