CN210423845U - Check valve for high-pressure hydrogen - Google Patents
Check valve for high-pressure hydrogen Download PDFInfo
- Publication number
- CN210423845U CN210423845U CN201921356139.4U CN201921356139U CN210423845U CN 210423845 U CN210423845 U CN 210423845U CN 201921356139 U CN201921356139 U CN 201921356139U CN 210423845 U CN210423845 U CN 210423845U
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- CN
- China
- Prior art keywords
- check valve
- elastic sealing
- pressure hydrogen
- way
- hydrogen gas
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- 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.)
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 15
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 24
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 239000007789 gas Substances 0.000 claims abstract description 16
- 229920002379 silicone rubber Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000004073 vulcanization Methods 0.000 claims description 5
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model discloses a check valve for high-pressure hydrogen, including the check valve body and the check valve connector body that interconnect, the air inlet of check valve body and the air outlet end of check valve connector body are equipped with the cutting ferrule group of being connected with external pipeline respectively, the cutting ferrule group includes the back cutting ferrule and the elastic sealing assembly that link to each other, and the cutting ferrule nut of cover-mounted outside the back cutting ferrule and elastic sealing assembly, the elastic sealing assembly includes solid fixed ring and the elastic sealing body that sets up on solid fixed ring; the one-way check valve is characterized in that a one-way check device is arranged in a gas passage formed by the one-way valve body and the one-way valve connector body, the one-way check device comprises a poppet, a poppet stop block and a spring which are sequentially connected in the one-way valve body, one side, close to a gas inlet of the one-way valve body, of the poppet is provided with an elastic sealing gasket used for plugging the gas passage, and the other end of the spring is connected with the one-way valve connector body. The utility model discloses the leakproofness well just is able to bear or endure high and low temperature, high pressure resistant, corrosion-resistant, can improve life.
Description
Technical Field
The utility model relates to a check valve technical field, in particular to check valve for high pressure hydrogen.
Background
The check valve is a check valve body which can only flow along the inlet to the outlet, but can not return the outlet medium. The existing check valve is sealed by a common single clamping sleeve, and meanwhile, a sealing ring for the check valve core of the check valve is sealed by a common nitrile rubber O-shaped ring, so that the sealing effect is required to be improved, and the sealing clamping sleeve is just started to damage a joint to a certain extent, and the service life of the check valve is influenced.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a leakproofness well and resistant high low temperature, high pressure resistant, corrosion-resistant, can improve life's check valve for high pressure hydrogen.
The technical scheme of the utility model as follows:
a check valve for high-pressure hydrogen comprises a check valve body and a check valve connector body which are connected with each other, wherein a clamping sleeve group connected with an external pipeline is respectively arranged at an air inlet of the check valve body and an air outlet of the check valve connector body, the clamping sleeve group comprises a rear clamping sleeve and an elastic sealing assembly which are connected with each other, and a clamping sleeve nut sleeved outside the rear clamping sleeve and the elastic sealing assembly, the elastic sealing assembly comprises an elastic sealing body and a fixing ring, and the elastic sealing body is arranged on the fixing ring; the one-way check valve is characterized in that a one-way check device is arranged in a gas passage formed by the one-way valve body and the one-way valve connector body, the one-way check device comprises a lifting head arranged in the one-way valve body, a lifting head stop block connected with the lifting head and a spring connected with the lifting head stop block, an elastic sealing gasket used for sealing the gas passage is arranged on one side, close to a gas inlet of the one-way valve body, of the lifting head, and the other end of the spring is connected with the one-way valve connector body.
Preferably, the elastic sealing body is made of a silicon rubber material.
Preferably, the elastic sealing body is fixed to the fixing ring by vulcanization.
Preferably, the joint of the one-way valve body and the clamping sleeve group and the joint of the one-way valve body and the clamping sleeve group are both provided with inner conical surfaces.
Preferably, the outer surface of the elastic sealing body is an outer conical surface which is matched with the shape of the inner conical surface at the joint and has a size larger than that of the inner conical surface at the joint, and the inner diameter of the elastic sealing body is smaller than the outer diameter of the external pipeline.
Preferably, a silicon rubber elastic sealing ring is arranged at the joint between the inner side of the end part of the one-way valve body and the outer side wall of the one-way valve connector body.
Preferably, the elastic sealing gasket is made of a silicon rubber material.
Preferably, the elastic packing is fixed to the poppet by vulcanization.
Preferably, the check valve body, the check valve joint body, the ferrule nut, the rear ferrule, the fixing ring, the poppet and the poppet stop block are all made of 316 stainless steel materials.
Preferably, the high-pressure hydrogen pressure is 1-35 MPa.
The utility model has the advantages that:
1. including back cutting ferrule and the elastic sealing assembly that links to each other through setting up the cutting ferrule group, and the cover is established the cutting ferrule nut outside back cutting ferrule and the elastic sealing assembly, the elastic sealing assembly includes elastic sealing body and solid fixed ring, the elastic sealing body sets up gu fixed ring is last, can make check valve and external pipeline form good sealed, plays through back cutting ferrule and promptly external pipeline and prevent that external pipeline from droing, seals and avoids the contact surface damage through the elastic sealing body, fixes elastic sealing body and prevents excessively to screw up the installation through the solid fixed ring.
2. When cutting ferrule group uses a period leakproofness to reduce, the accessible is changed cutting ferrule group, makes the utility model discloses can continue to use, change new through the renewal part, avoid the wasting of resources.
3. Through all being equipped with interior conical surface at the joint department that the check valve body links to each other with cutting ferrule group, the joint department that the check valve joint body links to each other with cutting ferrule group, the elastic seal surface be with the outer conical surface of joint department interior conical surface shape phase-match and size greater than joint department interior conical surface size, the elastic seal internal diameter is less than external pipeline external diameter, can strengthen sealing performance and can avoid the contact surface damage.
4. Through setting up check valve body, check valve joint body, poppet dog, solid fixed ring, cutting ferrule nut and all adopting the 316 stainless steel material preparation that is fit for hydrogen to use to form, can increase life.
5. Through adopting high low temperature resistant, high pressure resistant, corrosion-resistant silicon rubber that is fit for the hydrogen use, and through vulcanizing fixed seal, no longer adopt ordinary nitrile rubber O type sealing washer, can prevent to drop because of the gas flow is fast when high pressure, increase life, reinforcing sealing performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural view of a check valve for high-pressure hydrogen of the present invention;
fig. 2 is a schematic structural view of the clamping sleeve set when the clamping sleeve nut of the one-way valve for high-pressure hydrogen of the present invention is not screwed down;
fig. 3 is the structure diagram of the clamping sleeve set when the clamping sleeve nut of the check valve for high-pressure hydrogen is screwed down.
Reference numbers in the figures:
1-one-way valve body, 2-one-way valve joint body, 3-elastic sealing ring, 4-external pipeline, 5-rear cutting sleeve, 6-cutting sleeve nut, 7-elastic sealing body, 8-fixing ring, 9-lifting head, 10-lifting head stop block, 11-spring, 12-elastic sealing gasket, 13-joint and 14-elastic sealing assembly.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1-3, the check valve for high-pressure hydrogen comprises a check valve body 1 and a check valve joint body 2 which are connected with each other, and a silicone rubber elastic sealing ring 3 is arranged at the joint between the inner side of the end part of the check valve body 1 and the outer side wall of the check valve joint body 2. The air inlet of check valve body 1 and the air outlet end of check valve joint body 2 are equipped with the card suit of being connected with external pipeline 4 respectively, the card suit includes continuous back cutting ferrule 5 and elastic seal assembly, and the cover is established the outer cutting ferrule nut 6 of back cutting ferrule 5 and elastic seal assembly, elastic seal assembly includes elastic seal body 7 and solid fixed ring 8, elastic seal body 7 adopts the preparation of silicon rubber material to form, and fixes through vulcanizing gu on the fixed ring 8. The joint 13 that check valve body 1 links to each other with the cutting ferrule group, the joint 13 that check valve joint body 2 links to each other with the cutting ferrule group all are equipped with interior conical surface, the external surface of elastic seal 7 is the external cone face that matches with 13 interior conical surface shapes of joint and the size is greater than 13 interior conical surface sizes of joint, and the internal diameter of elastic seal 7 is less than external pipeline 4 external diameter. Be equipped with one-way non return device in the gas passage that one-way valve body 1 and one-way valve joint body 2 formed, one-way non return device includes poppet 9 that sets up in the one-way valve body, the poppet dog 10 that links to each other with poppet dog 9, the spring 11 that links to each other with poppet dog 10, one side that poppet 9 is close to 1 air inlet of one-way valve body is equipped with the elastic sealing pad 12 that is used for shutoff gas passage, elastic sealing pad 12 adopts the silicon rubber materials preparation to form, and fixes through the vulcanization on the poppet 9, the other end of spring 11 connects body 2 with one-way valve and links to each other. Check valve body 1, check valve joint body 2, cutting ferrule nut 6, back cutting ferrule 5, solid fixed ring 8, poppet 9, poppet dog 10 all adopt 316 stainless steel material to make and form, high pressure hydrogen pressure is 1 ~ 35 MPa.
Use the utility model discloses the time, two external pipelines are connected and are sealed through the cutting ferrule group at check valve left and right sides both ends respectively, specifically for connecting external pipeline 4 after, screw up cutting ferrule nut 6, cutting ferrule 5 motion after driving when cutting ferrule nut 6 moves, rear cutting ferrule 5 produces a radial deformation at the front end under solid fixed ring 8 and cutting ferrule nut 6's effect, this deformation can lead to external pipeline to produce a arch at rear cutting ferrule 5 front end, external pipeline can inwards be cut into to rear cutting ferrule 5 simultaneously, promptly external pipeline prevents to drop. Because of the internal hole size of the elastic sealing body 7 is less than the external pipeline 4, simultaneously the external conical surface size of the elastic sealing body 7 is greater than the internal conical surface size of the joint 13, when the rear cutting ferrule 5 moves, the fixing ring 8 and the elastic sealing body 7 can also move together, so that the internal hole wall of the elastic sealing body 7 tightly holds the external surface of the external pipeline 4, the external conical surface of the elastic sealing body 7 tightly fits the internal conical surface of the joint 13, simultaneously, under the action of internal pressure, the elastic sealing body 7 can generate pressure to the axial direction and the radial direction, so that the elastic sealing body 7 is more tightly contacted with the external pipeline 4 and the internal conical surface of the joint 13, and the sealing property is enhanced. When gas flows in from the air inlet of the one-way valve body 1, the gas acts on the elastic sealing gasket 12 and the poppet 8, acting force is transmitted to the poppet stop block 10, and then the spring 11 is pushed to move towards the air outlet of the one-way valve connector body 2, so that a gas channel is opened, and the gas flows into the inside of the one-way valve connector body 2 and then enters the downstream through the external pipeline.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (10)
1. A check valve for high-pressure hydrogen is characterized by comprising a check valve body and a check valve connector body which are mutually connected, wherein a clamping sleeve group connected with an external pipeline is respectively arranged at an air inlet of the check valve body and an air outlet of the check valve connector body, the clamping sleeve group comprises a rear clamping sleeve and an elastic sealing assembly which are connected with each other, and a clamping sleeve nut sleeved outside the rear clamping sleeve and the elastic sealing assembly, the elastic sealing assembly comprises an elastic sealing body and a fixing ring, and the elastic sealing body is arranged on the fixing ring; the one-way check valve is characterized in that a one-way check device is arranged in a gas passage formed by the one-way valve body and the one-way valve connector body, the one-way check device comprises a lifting head arranged in the one-way valve body, a lifting head stop block connected with the lifting head and a spring connected with the lifting head stop block, an elastic sealing gasket used for sealing the gas passage is arranged on one side, close to a gas inlet of the one-way valve body, of the lifting head, and the other end of the spring is connected with the one-way valve connector body.
2. The check valve for high-pressure hydrogen gas according to claim 1, wherein the elastic sealing body is made of a silicone rubber material.
3. The check valve for high-pressure hydrogen gas according to claim 2, wherein the elastic sealing body is fixed to the fixing ring by vulcanization.
4. The check valve for high-pressure hydrogen gas as claimed in claim 1, wherein the joints of the check valve body and the ferrule group and the joints of the check valve body and the ferrule group are provided with inner conical surfaces.
5. The check valve for high-pressure hydrogen gas according to claim 4, wherein the outer surface of the elastic sealing body is an outer conical surface which is matched with the shape of the inner conical surface at the joint and has a size larger than that of the inner conical surface at the joint, and the inner diameter of the elastic sealing body is smaller than the outer diameter of the external pipe.
6. The check valve for high-pressure hydrogen gas according to claim 1, wherein a silicone rubber elastic seal ring is provided at a joint between an inner side of an end portion of the check valve body and an outer side wall of the check valve joint body.
7. The check valve for high pressure hydrogen gas according to claim 1, wherein the elastic seal gasket is made of a silicone rubber material.
8. The check valve for high-pressure hydrogen gas according to claim 7, wherein the elastic packing is fixed to the poppet by vulcanization.
9. The check valve for high-pressure hydrogen gas according to any one of claims 1 to 8, wherein the check valve body, the check valve joint body, the ferrule nut, the rear ferrule, the fixing ring, the poppet, and the poppet stopper are all made of 316 stainless steel.
10. The check valve for high-pressure hydrogen gas according to any one of claims 1 to 8, wherein the pressure of the high-pressure hydrogen gas is 1 to 35 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921356139.4U CN210423845U (en) | 2019-08-21 | 2019-08-21 | Check valve for high-pressure hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921356139.4U CN210423845U (en) | 2019-08-21 | 2019-08-21 | Check valve for high-pressure hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423845U true CN210423845U (en) | 2020-04-28 |
Family
ID=70363463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921356139.4U Active CN210423845U (en) | 2019-08-21 | 2019-08-21 | Check valve for high-pressure hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423845U (en) |
-
2019
- 2019-08-21 CN CN201921356139.4U patent/CN210423845U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 610000 NO.320 and 436, Pingtang East Road, Jinhua Town, Xinjin County, Chengdu City, Sichuan Province (Xinjin Industrial Park) Patentee after: Anrui Zhida (Chengdu) Technology Co.,Ltd. Address before: 610000, Sichuan Chengdu Industrial Park, new materials industry, functional zone, new materials, 18 road, Xinjin Patentee before: SINOMA CHENGDU ENERGY TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230103 Address after: No. 136, Pingtang East Road, Puxing Street (new material industry functional zone), Xinjin District, Chengdu, Sichuan 611430 Patentee after: SINOMA SCIENCE & TECHNOLOGY (CHENGDU) CO.,LTD. Address before: No. 320, 436, Pingtang East Road, Jinhua Town, Xinjin County, Chengdu, Sichuan 610000 (Xinjin Industrial Park) Patentee before: Anrui Zhida (Chengdu) Technology Co.,Ltd. |