CN216158381U - Diaphragm type valve clack structure of pilot operated safety valve - Google Patents
Diaphragm type valve clack structure of pilot operated safety valve Download PDFInfo
- Publication number
- CN216158381U CN216158381U CN202121506971.5U CN202121506971U CN216158381U CN 216158381 U CN216158381 U CN 216158381U CN 202121506971 U CN202121506971 U CN 202121506971U CN 216158381 U CN216158381 U CN 216158381U
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- Prior art keywords
- valve
- diaphragm
- rod head
- valve rod
- clack
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- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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Abstract
The pilot operated safety valve diaphragm type valve clack structure mainly comprises a valve clack, a diaphragm, a supporting plate, a pressing ring, an adjusting screw, a screw sleeve and a valve rod head, wherein a valve clack groove is formed in the valve clack, a valve rod head connecting block is arranged in the valve clack groove and is inserted in the valve clack groove through an elastic check ring and sealed through an O-shaped ring, the valve clack and the diaphragm are tightly matched under the pre-tightening of a circle of screw through the pressing ring, and the tightness state of the diaphragm is adjusted through the supporting plate; the valve rod head connecting block is provided with a valve rod head connecting hole, the valve rod head is inserted in the valve rod head connecting hole and is connected in a matching mode in a rolling mode, and the valve rod head connecting block has the advantages that the valve clack is not easy to fall off, the structure is light and flexible, the low-temperature and low-pressure sealing performance is good, the service performance of the safety valve is well guaranteed, and the like.
Description
Technical Field
The utility model relates to a diaphragm type valve clack structure of a pilot operated safety valve, in particular to a valve clack structure of a safety valve with low temperature, low pressure and large caliber, belonging to the technical field of valves.
Background
For some working conditions with higher low-temperature and low-pressure sealing requirements, in order to ensure the sealing performance of the pilot operated safety valve, the existing valve clack structure generally adopts a soft sealing structure, and the sealing material adopts a low-temperature-resistant modified tetrafluoro material. Because the specific sealing pressure of the tetrafluoro material is relatively high, and the sealing performance under low temperature and low pressure is difficult to ensure under the condition that the valve clack structure is unreasonable and has poor activity.
Disclosure of Invention
The utility model aims to overcome the defects of the existing valve clack structure, and provides a safety valve diaphragm type valve clack structure which can ensure that a valve clack is not easy to fall off, has a light structure and good flexibility, has good low-temperature and low-pressure sealing performance, and can well ensure the service performance of a safety valve.
The utility model aims to provide a membrane type valve clack structure of a pilot operated safety valve, which mainly comprises a valve clack, a membrane, a supporting plate, a pressure ring, an adjusting screw, a screw sleeve and a valve rod head, wherein the valve clack is provided with a valve clack groove, a valve rod head connecting block is arranged in the valve clack groove, the valve rod head connecting block is inserted in the valve clack groove through an elastic check ring and realizes sealing through an O-shaped ring, the valve clack and the membrane are tightly matched under the pre-tightening of a circle of screw through the pressure ring, and the tightness state of the membrane is adjusted through the supporting plate.
Preferably, the method comprises the following steps: the valve rod head connecting block is provided with a valve rod head connecting hole, the valve rod head is inserted in the valve rod head connecting hole and is connected in a matched mode in a rolling mode, and the valve rod head, the screw rod, the supporting block and the supporting tube form a valve rod structure together.
Preferably, the method comprises the following steps: the valve rod comprises a valve rod head connecting block, a valve rod and a supporting plate, wherein a threaded sleeve connecting hole is formed between the diaphragm and the supporting plate, the threaded end of the threaded sleeve penetrates through the threaded sleeve connecting hole and is tightly matched with the diaphragm and the supporting plate through a gasket, a gasket and a nut, an adjusting screw hole is formed in the middle of the threaded sleeve, the adjusting screw is screwed into the adjusting screw hole, one end of the adjusting screw is supported on the valve rod head connecting block, the adjusting screw can drive the threaded sleeve to move up and down, and the supporting plate is driven by the threaded sleeve to move up and down, so that the tightness of the diaphragm is adjusted.
Preferably, the method comprises the following steps: the valve rod head is of a spherical structure and is inserted into the valve rod head connecting hole, so that the valve rod head can flexibly and freely rotate, and the flexibility of the valve clack is ensured.
Preferably, the method comprises the following steps: the adjusting screw is provided with a through hole, so that the medium pressure on two sides of the diaphragm is always in a balanced state, and the sealing performance of the diaphragm is ensured.
The utility model belongs to an improvement of the prior art, and has the characteristics of difficult falling of a valve clack, light and handy structure, good flexibility, good low-temperature and low-pressure sealing performance, capability of well ensuring the service performance of a safety valve and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The utility model will be described in detail with reference to the accompanying drawings, wherein as shown in fig. 1, the utility model mainly comprises a valve clack 1, a diaphragm 2, a supporting plate 3, a pressing ring 4, an adjusting screw 5, a threaded sleeve 6 and a valve rod head 7, wherein the valve clack 1 is provided with a valve clack groove 18, a valve rod head connecting block 8 is arranged in the valve clack groove 18, the valve rod head connecting block 8 is inserted in the valve clack groove 18 through an elastic retainer ring 12 and sealed through an O-shaped ring 13, the valve clack 1 and the diaphragm 2 are tightly matched under the pretightening force of a circle of screw 17 through the pressing ring 4, and the tightness state of the diaphragm 2 is adjusted through the supporting plate 3.
The valve rod head connecting block 8 is provided with a valve rod head connecting hole 19, the valve rod head 7 is inserted into the valve rod head connecting hole 19 and is connected in a matching mode in a rolling mode, and the valve rod head 7, the screw 14, the supporting block 15 and the supporting tube 16 form a valve rod structure together.
The adjusting device is characterized in that a threaded sleeve connecting hole 21 is formed between the diaphragm 2 and the supporting plate 3, the threaded end of the threaded sleeve 6 penetrates through the threaded sleeve connecting hole 21 and is tightly matched with the diaphragm 2 and the supporting plate 3 through a gasket 9, a gasket 10 and a nut 11, an adjusting screw threaded hole 20 is formed in the middle of the threaded sleeve 6, the adjusting screw 5 is screwed into the adjusting screw threaded hole 20, one end of the adjusting screw is supported on the valve rod head connecting block 8, the threaded sleeve 5 can be driven to move up and down by screwing in and screwing out, and the threaded sleeve 6 drives the supporting plate 3 to move up and down so as to adjust the tightness state of the diaphragm.
The valve rod head 6 is of a spherical structure and is inserted into the valve rod head connecting hole 19, so that the valve rod head can flexibly and freely rotate, and the flexibility of the valve clack is ensured.
The adjusting screw 5 is provided with a through hole, so that the medium pressure on two sides of the diaphragm 2 is always in a balanced state, and the sealing performance of the diaphragm 2 is ensured.
Claims (5)
1. The utility model provides a pilot-operated formula relief valve diaphragm formula valve clack structure, it mainly includes valve clack (1), diaphragm (2), fagging (3), clamping ring (4), adjusting screw (5), swivel nut (6), valve rod head (7), its characterized in that: the valve clack (1) on seted up valve clack recess (18), be equipped with valve rod head connecting block (8) in valve clack recess (18), this valve rod head connecting block (8) are pegged graft through circlip (12) in valve clack recess (18) to realize sealed through O type circle (13), valve clack (1) and diaphragm (2) realize closely cooperating through clamping ring (4) under the pretension of round screw (17), diaphragm (2) pass through fagging (3) are adjusted the elasticity state.
2. The pilot operated safety valve diaphragm valve flap structure of claim 1, wherein: the valve rod head connecting block (8) is provided with a valve rod head connecting hole (19), the valve rod head (7) is inserted into the valve rod head connecting hole (19) and is connected in a matched mode in a rolling mode, and the valve rod head (7), the screw rod (14), the supporting block (15) and the supporting tube (16) form a valve rod structure together.
3. The pilot operated safety valve diaphragm valve flap structure of claim 1, wherein: the adjustable valve rod is characterized in that a threaded sleeve connecting hole (21) is formed between the diaphragm (2) and the supporting plate (3), the threaded end of the threaded sleeve (6) penetrates through the threaded sleeve connecting hole (21) and is tightly matched with the diaphragm (2) and the supporting plate (3) through a gasket (9), a gasket (10) and a nut (11), an adjusting screw threaded hole (20) is formed in the middle of the threaded sleeve (6), the adjusting screw (5) is screwed into the adjusting screw threaded hole (20), one end of the adjusting screw is supported on the valve rod head connecting block (8), the adjusting screw (5) can be screwed out to drive the threaded sleeve to move up and down, and the threaded sleeve (6) drives the supporting plate (3) to move up and down to adjust the tightness state of the diaphragm.
4. The pilot operated safety valve diaphragm valve flap structure of claim 1 or 2, wherein: the valve rod head (7) is of a spherical structure, is inserted into the valve rod head connecting hole (19) and can rotate freely, so that the flexibility of the valve clack is ensured.
5. The pilot operated safety valve diaphragm valve flap structure of claim 1 or 3, wherein: the adjusting screw (5) is provided with a through hole, so that medium pressures on two sides of the diaphragm (2) are always in a balanced state, and the sealing performance of the diaphragm (2) is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121506971.5U CN216158381U (en) | 2021-07-05 | 2021-07-05 | Diaphragm type valve clack structure of pilot operated safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121506971.5U CN216158381U (en) | 2021-07-05 | 2021-07-05 | Diaphragm type valve clack structure of pilot operated safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216158381U true CN216158381U (en) | 2022-04-01 |
Family
ID=80835996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121506971.5U Active CN216158381U (en) | 2021-07-05 | 2021-07-05 | Diaphragm type valve clack structure of pilot operated safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216158381U (en) |
-
2021
- 2021-07-05 CN CN202121506971.5U patent/CN216158381U/en active Active
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220916 Address after: 7th Floor, Building 1, No. 59, Nanzhu Avenue, Beihai City, Guangxi Zhuang Autonomous Region, 536002 Patentee after: National pipe network group Beihai LNG Co.,Ltd. Patentee after: HANGZHOU HANGYANG KOSO PUMP & VALVE Co.,Ltd. Address before: 311300 No.99, East Ring Road, Qingshanhu street, Lin'an City, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU HANGYANG KOSO PUMP & VALVE Co.,Ltd. |