CN217845532U - Dry-method leak detection tool for hydrogen control valve - Google Patents
Dry-method leak detection tool for hydrogen control valve Download PDFInfo
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- CN217845532U CN217845532U CN202221508983.6U CN202221508983U CN217845532U CN 217845532 U CN217845532 U CN 217845532U CN 202221508983 U CN202221508983 U CN 202221508983U CN 217845532 U CN217845532 U CN 217845532U
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- control valve
- cover body
- leak detection
- gas outlet
- gasket
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Abstract
The utility model relates to the field of valve leak detection, and discloses a dry leak detection tool for a hydrogen control valve, which comprises a screw cap, a gasket and a cylindrical cover body which are coaxially arranged from top to bottom, wherein the lower port of the cover body is an annular bayonet which is expanded outwards, and the wall surface of the bayonet is provided with a first sealing ring; the upper end of the cover body is provided with a fixing opening used for penetrating through a gas outlet joint of the hydrogen control valve, the gasket is sleeved with the gas outlet joint of the hydrogen control valve, and the screw cover is spirally sleeved with the gas outlet joint of the hydrogen control valve and can press the gasket on the cover body to seal the fixing opening; the lateral wall of the cover body is provided with an air outlet hole and a connector which is arranged outside the cover body and communicated with the air outlet hole and is used for connecting an air outlet pipe. The leak detection tool can avoid water immersion testing on the atmosphere balance side of the hydrogen control valve, realizes dry leak detection, improves efficiency and safety, and has better precision.
Description
Technical Field
The utility model relates to a valve leak hunting field specifically relates to a dry process leak hunting frock of accuse hydrogen valve.
Background
The hydrogen is used as a green clean energy source and is more and more widely applied. However, the existing mature method of the storage method is high-pressure container hydrogen storage, and then the hydrogen control valve is essential in the use process of hydrogen as a pressure reduction device of hydrogen. And the tightness and safety of the hydrogen control valve must be guaranteed layer by layer, and reasonable performance tests are required.
The traditional leak detection mode of the hydrogen control valve is to immerse the atmosphere balance side of the hydrogen control valve in water and observe whether bubbles are generated, certain irrationality exists in the leak detection mode, the water immersion test of the atmosphere balance side of the hydrogen control valve can enable water to be remained in the hydrogen control valve to cause potential safety hazards, and particularly, the crystallized water can damage the hydrogen control valve under the severe cold condition. And high-pressure gas purging and drying processes are needed after the water is soaked, so that the efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the water logging test of atmospheric balance side in the traditional leak hunting mode that prior art exists and can make water remain and lead to the potential safety hazard in accuse hydrogen valve kind, especially under the severe cold condition, the water of crystallization can cause the damage and still need high-pressure gas to sweep and dry the process after soaking to accuse hydrogen valve, the problem that leads to efficiency reduction, a dry method leak hunting frock of accuse hydrogen valve is provided, this leak hunting frock can avoid the water logging test of accuse hydrogen valve atmospheric balance side, realize dry method leak hunting, efficiency is improved and security, and the precision is better.
In order to achieve the purpose, the utility model provides a dry method leak detection tool of a hydrogen control valve, which comprises a screw cap, a gasket and a cylindrical cover body which are coaxially arranged from top to bottom, wherein the lower port of the cover body is an externally expanded annular bayonet, and the wall surface of the bayonet is provided with a first sealing ring;
the upper end of the cover body is provided with a fixing opening used for penetrating through a gas outlet joint of the hydrogen control valve, the gasket is sleeved with the gas outlet joint of the hydrogen control valve, and the screw cap is spirally sleeved with the gas outlet joint of the hydrogen control valve and can tightly press the gasket on the cover body to seal the fixing opening;
the lateral wall of the cover body is positioned above the first sealing ring and is provided with an air outlet hole and a connector which is arranged outside the cover body and communicated with the air outlet hole and is used for connecting an air outlet pipe.
Preferably, the upper part of the bayonet is in a shape of a circular truncated cone, and the lower part of the bayonet is in a shape of a cylinder.
Preferably, a first sealing groove for embedding the first sealing ring is formed in the upper portion of the bayonet.
Preferably, the inner cavity of the cover body is cylindrical.
Preferably, the inner wall of the inner cavity is provided with a second sealing groove, and a second sealing ring is embedded into the second sealing groove.
Preferably, the second sealing ring is arranged above the air outlet.
Preferably, the connector is provided with an internal thread, the connector of the air outlet pipe is in threaded connection with the connector, and the threaded connection part is filled with the thread seal tape.
Preferably, connector sealing connection has the public head of the quick air cock of inserting of C type, the connector of outlet duct sets up to the female head of the quick air cock of inserting of C type.
Preferably, the outside of gasket is wrapped up in the elastic sealing layer, the middle part of gasket seted up with accuse hydrogen valve gas outlet connects the complex round hole.
Preferably, the screw cap comprises a threaded cylinder arranged outside and a sealing column coaxially and fixedly arranged in the threaded cylinder;
the lower end of the sealing column can be inserted into a concave hole formed in the top of the hydrogen control valve gas outlet connector to seal a hydrogen control valve gas outlet, and the threaded cylinder can be connected with an external thread on the outer side of the hydrogen control valve gas outlet connector in a threaded manner to downwards compress the gasket.
Through the technical scheme, when the leak detection tool is used for detecting the leak of the hydrogen control valve, the cover body covers the gas outlet end of the hydrogen control valve, the gas outlet joint of the hydrogen control valve penetrates through the fixing port at the upper end of the cover body, the gasket is sleeved outside the gas outlet joint of the hydrogen control valve, and the gasket is attached to the upper end face of the cover body.
Then, connecting the screw cover with a gas outlet joint of the hydrogen control valve to seal a gas outlet of the hydrogen control valve, and meanwhile, when the screw cover rotates and moves downwards, pressing the gasket downwards to seal a gasket fixing opening; the cover body can be extruded downwards by the further screw cap, and the air outlet end of the hydrogen control valve is sealed by the first sealing ring arranged on the wall surface of the bayonet.
Connecting one end of an air outlet pipe in a connecting port outside an air outlet, sealing the connecting position, then putting the other end of the air outlet pipe into water, observing whether bubbles appear or not, and if yes, indicating that the atmosphere balance hole has leakage; if no bubble exists, the atmosphere balance hole is well sealed and has no leakage.
Through this leak hunting frock, can avoid directly soaking the atmosphere balance side of accuse hydrogen valve in the aquatic, avoid the potential safety hazard that the test of soaking brought, left out simultaneously that high-pressure gas sweeps and the stoving process, raise the efficiency.
Drawings
FIG. 1 is a schematic structural view of one embodiment of the middle cover of the present invention;
FIG. 2 is a schematic structural diagram of the gas outlet end of the central hydrogen control valve and the gas outlet joint of the hydrogen control valve of the present invention;
fig. 3 is an assembly structure schematic diagram of a leak detection tooling and a gas outlet end of a time-control hydrogen valve during leak detection.
Description of the reference numerals
1-a screw cap, 2-a gasket, 3-a cover body, 4-a bayonet, 5-a first sealing ring, 6-a hydrogen control valve gas outlet joint, 7-a fixed port, 8-a gas outlet hole, 9-a connecting port, 10-a first sealing groove, 11-a second sealing groove, 12-a second sealing ring, 13-a threaded cylinder, 14-a sealing column, 15-a concave hole and 16-an atmospheric balance hole.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The utility model provides a dry method leak hunting frock of accuse hydrogen valve, dry method leak hunting frock includes top-down coaxial setting screw lid 1, gasket 2 and cylindrical cover body 3, and the lower port of cover body 3 sets up to the annular bayonet 4 that expands outward, is provided with first sealing washer 5 on the wall of bayonet 4;
the upper end of the cover body 3 is provided with a fixing opening 7 for penetrating through a hydrogen control valve gas outlet joint 6, the gasket 2 is sleeved with the hydrogen control valve gas outlet joint 6, the screw cover 1 is spirally sleeved with the hydrogen control valve gas outlet joint 6, and the gasket 2 can be tightly pressed on the cover body 3 to seal the fixing opening 7;
the lateral wall of the cover body 3 is provided with an air outlet hole 8 and a connector 9 which is arranged outside the cover body 3 and communicated with the air outlet hole 8 and is used for connecting an air outlet pipe, wherein the connector is positioned above the first sealing ring 5.
When the leak detection tool is used for detecting the leak of the hydrogen control valve, the cover body 3 is firstly covered on the gas outlet end of the hydrogen control valve, the gas outlet joint 6 of the hydrogen control valve penetrates through the fixing port 7 at the upper end of the cover body 3, then the gasket 2 is sleeved outside the gas outlet joint 6 of the hydrogen control valve, and the gasket 2 is attached to the upper end face of the cover body 3.
Then, the screw cap 1 is connected with a gas outlet joint 6 of the hydrogen control valve to seal a gas outlet of the hydrogen control valve, and simultaneously, when the screw cap 1 rotates and moves downwards, the gasket 2 is pressed downwards, so that the upper end and the lower end of the gasket 2 are respectively clung to the screw cap 1 and the upper end face of the cover body 3, and the fixing port 7 is sealed; the cover body 3 can be downwards extruded by the screw cap 1, so that the bayonet 4 at the lower end of the cover body 3 is tightly attached to the gas outlet end of the hydrogen control valve, and the gas outlet end of the hydrogen control valve is sealed by the first sealing ring 5 arranged on the wall surface of the bayonet 4. It should be noted that, at this time, the first sealing ring 5 is located below the atmosphere balance hole 16 of the hydrogen control valve, and at this time, only the air outlet hole 8 is not sealed in the cavity where the atmosphere balance hole 16 is located.
One end of an air outlet pipe is connected into a connecting port 9 outside an air outlet, the connecting position is sealed, then the other end of the air outlet pipe is placed into water, whether bubbling occurs or not is observed, and if yes, the atmosphere balance hole 16 leaks; if no bubble is present, the atmosphere balance hole 16 is well sealed and has no leakage.
Through this leak hunting frock, can avoid directly immersing the atmosphere balance side of accuse hydrogen valve in water, avoid the potential safety hazard that the test of soaking brought, left out simultaneously high-pressure gas and swept and the stoving process, raise the efficiency.
In this embodiment, the upper portion of the bayonet 4 is set to be a truncated cone shape, and the lower portion is set to be a cylinder shape, so that the bayonet can be better attached to the outer surface of the gas outlet end of the hydrogen control valve.
In this embodiment, a first sealing groove 10 for inserting the first sealing ring 5 is provided at the upper portion of the bayonet 4, the first sealing ring 5 can be placed in the first sealing groove 10, a part of the first sealing ring 5 is exposed out of the first sealing groove 10, and the exposed part is closely attached to the outer surface of the gas outlet end of the hydrogen control valve, so as to prevent gas from leaking from the bayonet 4.
In the embodiment, the inner cavity of the cover body 3 is cylindrical, is more fit with the outer contour of the gas outlet end of the hydrogen control valve, is more regular, and is convenient to seal.
In this embodiment, the inner wall of inner chamber is provided with second seal groove 11, and second sealing washer 12 has been embedded in second seal groove 11, and improvement sealed effect that can be further avoids gaseous from leaking from the place beyond venthole 8, guarantees the accurate nature of inspection.
In this embodiment, second sealing washer 12 sets up in venthole 8 top, and simultaneously when the inspection, second sealing washer 12 is located atmosphere balance hole 16 tops, and atmosphere balance hole 16 and venthole 8 all are located between first sealing washer 5 and second sealing washer 12 this moment, compare in 2 plane contact's of gasket sealed, and second sealing washer 12 sealed effect is better for the leak hunting result is more accurate.
In this embodiment, the connection port 9 is provided with an internal thread, the connection head of the air outlet pipe is in threaded connection with the connection port 9, and the threaded connection part is filled with a raw material belt. When the device is installed, the thread tape is firstly wound on the external thread of the connector, then the connector is in threaded connection with the internal thread of the connector 9, and the thread tape can seal the joint.
In the embodiment, the connecting port 9 is hermetically connected with a male head of a C-shaped quick insertion nozzle in a threaded manner, and the connecting part is still sealed; the connector of outlet duct sets up to the female head of C type quick plug air cock, and the junction of female head and outlet duct is also sealed, and male head and female head can be quick pull out and insert, are convenient for install and dismantle the outlet duct.
In this embodiment, the outside of gasket 2 is wrapped up in and is covered with the elastic sealing layer, and the elastic sealing layer can be the rubber material, and gasket 2's middle part is seted up and is connected 6 complex round holes with accuse hydrogen valve gas outlet, and the accuse hydrogen valve gas outlet of being convenient for connects 6 interlude.
In the present embodiment, the screw cap 1 includes a threaded cylinder 13 provided outside and a sealing post 14 coaxially and fixedly installed in the threaded cylinder 13;
the lower extreme of sealing post 14 can insert in the shrinkage pool 15 that the top of accuse hydrogen valve gas outlet joint 6 set up in order to seal accuse hydrogen valve gas outlet, and the third seal groove can be seted up to the lower part periphery of sealing post 14, sets up the third sealing washer in the third seal groove, inserts in shrinkage pool 15 at sealing post 14 back, and the third sealing washer can be hugged closely with shrinkage pool 15 inner wall, reaches the purpose of sealing accuse hydrogen valve gas outlet. A screw thread section of thick bamboo 13 can connect the external screw thread connection in order to compress tightly gasket 2 downwards in the outside with accuse hydrogen valve gas outlet, screw thread section of thick bamboo 13 with accuse hydrogen valve gas outlet connect 6 threaded connection back, the lower extreme of screw thread section of thick bamboo 13 conflicts gasket 2, and then all extrudees gasket 2 and the cover body 3 downwards, accuse hydrogen valve is given vent to anger the end and is moved up relatively, make screw thread section of thick bamboo 13 and gasket 2 compress tightly, gasket 2 compresses tightly with the cover body 3, bayonet 4 compresses tightly with accuse hydrogen valve end of giving vent to anger, sealed effect is showing.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical concept scope of the present invention, it can be right to perform various simple modifications to the technical solution of the present invention, including combining each specific technical feature in any suitable manner, in order to avoid unnecessary repetition, the present invention does not describe separately various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The dry leakage detection tool for the hydrogen control valve is characterized by comprising a screw cover (1), a gasket (2) and a cylindrical cover body (3) which are coaxially arranged from top to bottom, wherein the lower port of the cover body (3) is provided with an outward-expanding annular bayonet (4), and a first sealing ring (5) is arranged on the wall surface of the bayonet (4);
the upper end of the cover body (3) is provided with a fixing opening (7) used for penetrating through a hydrogen control valve gas outlet joint (6), the gasket (2) is sleeved on the hydrogen control valve gas outlet joint (6), the screw cover (1) is spirally sleeved on the hydrogen control valve gas outlet joint (6), and the gasket (2) can be pressed on the cover body (3) to seal the fixing opening (7);
the lateral wall of the cover body (3) is provided with an air outlet hole (8) at the position above the first sealing ring (5) and a connector (9) which is arranged outside the cover body (3) and communicated with the air outlet hole (8) and is used for connecting an air outlet pipe.
2. Dry leak detection tooling according to claim 1, characterized in that the upper part of the bayonet (4) is arranged in a truncated cone shape, and the lower part is arranged in a cylindrical shape.
3. Tool for dry leak detection according to claim 2, characterized in that a first sealing groove (10) for embedding the first sealing ring (5) is arranged at the upper part of the bayonet (4).
4. Dry leak detection tooling according to claim 1, characterized in that the inner cavity of the cover (3) is cylindrical.
5. The tool for dry leak detection according to claim 4, characterized in that a second sealing groove (11) is formed in the inner wall of the inner cavity, and a second sealing ring (12) is embedded in the second sealing groove (11).
6. Dry leak detection tooling according to claim 5, characterized in that the second sealing ring (12) is arranged above the air outlet hole (8).
7. The tool for dry leak detection according to claim 1, characterized in that the connecting port (9) is provided with internal threads, the connecting head of the air outlet pipe is in threaded connection with the connecting port (9), and a thread joint is filled with a raw material tape.
8. The tool for dry leak detection according to claim 1, characterized in that the connecting port (9) is hermetically connected with a male head of a C-shaped quick-insertion air faucet, and the connecting head of the air outlet pipe is set as a female head of the C-shaped quick-insertion air faucet.
9. The tool for dry leak detection according to claim 1, characterized in that an elastic sealing layer is wrapped outside the gasket (2), and a round hole matched with the gas outlet connector (6) of the hydrogen control valve is formed in the middle of the gasket (2).
10. The tool for dry leak detection according to claim 1, characterized in that the screw cover (1) comprises a threaded cylinder (13) arranged outside and a sealing column (14) coaxially and fixedly installed in the threaded cylinder (13);
the lower extreme of sealed post (14) can insert in shrinkage pool (15) that the top of accuse hydrogen valve gas outlet connects (6) sets up are in order to seal accuse hydrogen valve gas outlet, a screw thread section of thick bamboo (13) can with the external screw thread threaded connection in accuse hydrogen valve gas outlet connects (6) the outside compresses tightly downwards gasket (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221508983.6U CN217845532U (en) | 2022-06-15 | 2022-06-15 | Dry-method leak detection tool for hydrogen control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221508983.6U CN217845532U (en) | 2022-06-15 | 2022-06-15 | Dry-method leak detection tool for hydrogen control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217845532U true CN217845532U (en) | 2022-11-18 |
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ID=84023828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221508983.6U Active CN217845532U (en) | 2022-06-15 | 2022-06-15 | Dry-method leak detection tool for hydrogen control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217845532U (en) |
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2022
- 2022-06-15 CN CN202221508983.6U patent/CN217845532U/en active Active
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