CN212155966U - Sealing structure for preventing leakage of gas valve - Google Patents
Sealing structure for preventing leakage of gas valve Download PDFInfo
- Publication number
- CN212155966U CN212155966U CN202020087897.7U CN202020087897U CN212155966U CN 212155966 U CN212155966 U CN 212155966U CN 202020087897 U CN202020087897 U CN 202020087897U CN 212155966 U CN212155966 U CN 212155966U
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- Prior art keywords
- gas
- snap ring
- gas valve
- valve
- rubber
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- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 230000000694 effects Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 84
- 239000000463 material Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model provides a sealing structure for preventing leakage of a gas valve, which relates to the technical field of gas valves and comprises a sealing structure and a sealing cover; the gas valve comprises a gas valve body, a valve cover and an air outlet pipe, wherein the air outlet pipe is embedded into the right side of the gas valve body, an annular groove is formed in the outer surface of the air outlet pipe, and the valve cover is fixedly connected to the top end of the gas valve body through a nut. The utility model discloses in, through installing the snap ring, when valve cap and gas valve main part are closed, the snap ring can be embedded into to the draw-in groove in, be cylindric because of the snap ring and make the surface have the tiltability, make the snap ring in embedding to the draw-in groove, can increase and the leakproofness between the draw-in groove inner wall, when the snap ring imbeds to the draw-in groove in simultaneously, can extrude the first rubber strip in snap ring inner wall and the outside, make the first rubber strip in the outside can closely laminate the snap ring, the rear end that improves the snap ring reaches and the leakproofness between the draw-in groove, make the leakproofness of gas valve main part improve relatively.
Description
Technical Field
The utility model relates to a gas valve technical field especially relates to a seal structure for gas valve prevents leaking.
Background
The gas valve is a novel safety matching device for gas pipeline engineering; the gas valve is used for cutting off, connecting and adjusting gas in a pipeline, and has good control characteristics and closing sealing performance; the gas leakage prevention valve is suitable for various gas medium pipelines such as urban gas, liquefied petroleum gas, natural gas, oxygen and the like, an existing liquefied petroleum gas tank needs to be frequently replaced and is easily abraded with a joint of a gas valve to cause gas leakage, and only one circle of sealing ring is usually arranged between a valve cover and the valve, so that gas leakage is easily caused once the gas pressure is too high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the joint of the gas valve is easy to wear and tear, resulting in air leakage, and the valve cover and the valve usually have only one circle of sealing ring, and providing a sealing structure for preventing leakage of the gas valve.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a sealing structure for preventing leakage of a gas valve comprises; the gas valve comprises a gas valve main body, a valve cover and an air outlet pipe, wherein the air outlet pipe is embedded in the right side of the gas valve main body, an annular groove is formed in the outer surface of the air outlet pipe, the top end of the gas valve main body is fixedly connected with the valve cover through a nut, a clamping ring is welded at the bottom end of the valve cover, an air inlet pipe is embedded in the left side of the gas valve main body, a pneumatic valve is embedded in the top end of the air inlet pipe, a movable clamping bolt is embedded in the outer surface of the air inlet pipe, and a rubber sleeve is;
the left side surface embedding of activity card bolt is provided with sealed snap ring, the left side of activity card bolt is run through and is provided with the hole, the inner wall of hole is provided with the sealing ring.
Preferably, the inner walls of the grooves are provided with rubber sealing strips.
Preferably, the top of gas valve main part has seted up the draw-in groove, and draw-in groove and snap ring be supporting setting, the tangent plane of snap ring is the round platform form, the snap ring is the rubber material.
Preferably, the inner wall and the outer wall of snap ring all are provided with two-layer first rubber strip, and the tangent plane of first rubber strip is handstand fishbone.
Preferably, the outer surface of the rubber sleeve is provided with a second annular rubber strip, and the section of the second rubber strip is in a fishbone shape.
Preferably, the section of the sealing snap ring is in a shape of a concave character inclining to the left.
Preferably, springs are arranged between the sealing ring and the inner wall of the hole in an annular arrangement.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses in, through installing the snap ring, when valve cap and gas valve main part are closed, the snap ring can be embedded into to the draw-in groove in, be cylindric because of the snap ring and make the surface have the tiltability, make the snap ring in embedding to the draw-in groove, can increase and the leakproofness between the draw-in groove inner wall, when the snap ring imbeds to the draw-in groove in simultaneously, can extrude the first rubber strip in snap ring inner wall and the outside, make the first rubber strip in the outside can closely laminate the snap ring, the rear end that improves the snap ring reaches and the leakproofness between the draw-in groove, make the leakproofness of gas valve main part improve relatively.
2. The utility model discloses in, through installing the second rubber strip, use needs often to be changed because of gas valve main part and gas cylinder, and the in-process rubber sleeve of changing causes wearing and tearing with the gas cylinder interface easily, and the rubber sleeve is when fixed through the activity gim peg with the gas cylinder interface, can make the rubber sleeve closely laminate and gas cylinder interface position, it is cyclic annular to make the extrusion of second rubber strip, can increase the area of the surface gas cylinder interface of rubber sleeve, and the second rubber strip of rubber material has the flexibility can closely laminate the gas cylinder interface more, and when the activity gim peg is turning round tight fixed gas cylinder interface surface, sealed snap ring is the concavity because of the tangent plane, make inner wall and the outer wall of sealed snap ring can closely laminate the gas cylinder interface, double leakproofness has, make and improve the leakproofness.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of a valve cover of the present invention;
FIG. 3 is a schematic view of a partial structure of the middle movable latch of the present invention;
FIG. 4 is a schematic view of the inner structure of the middle hole of the present invention;
fig. 5 is an enlarged schematic structural diagram of fig. 1A of the present invention.
In fig. 1 to 5, the correspondence between the part names or lines and the reference numbers is:
the gas valve comprises a gas valve main body 1, an air inlet pipe 101, a gas pressure valve 102, a valve cover 2, a clamping ring 201, a first rubber strip 202, an air outlet pipe 3, a groove 301, a movable clamping bolt 4, a sealing clamping ring 401, a hole 402, a sealing ring 403, a spring 404, a rubber sleeve 5, a second rubber strip 501 and a sealing gasket 502.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1 to 5; the utility model provides a leak-proof sealing structure for a gas valve, which comprises a sealing cover; the gas valve comprises a gas valve main body 1, a valve cover 2 and a gas outlet pipe 3, wherein the gas outlet pipe 3 is embedded into the right side of the gas valve main body 1, an annular groove 301 is formed in the outer surface of the gas outlet pipe 3, the top end of the gas valve main body 1 is fixedly connected with the valve cover 2 through a nut, a clamping ring 201 is welded at the bottom end of the valve cover 2, a gas inlet pipe 101 is embedded into the left side of the gas valve main body 1, a gas pressure valve 102 is embedded into the top end of the gas inlet pipe 101, a movable clamping bolt 4 is embedded into the outer surface of the gas inlet pipe;
the outer surface of the left side of the movable clamping bolt 4 is embedded with a sealing clamping ring 401, the left side of the movable clamping bolt 4 is provided with a hole 402 in a penetrating manner, and the inner wall of the hole 402 is provided with a sealing ring 403.
Further, the inner walls of the grooves 301 are provided with rubber sealing strips, when the air outlet pipe 3 is connected into the air pipe, the rubber sealing strips can increase the sealing performance between the rubber sealing strips and the inner wall of the air pipe, and the sealing performance between the air outlet pipe 3 and the air pipe is improved.
Further, the draw-in groove has been seted up on the top of gas valve main part 1, and draw-in groove and snap ring 201 are supporting setting, the tangent plane of snap ring 201 is the round platform form, snap ring 201 is the rubber material, when valve lid 2 lid gas valve main part 1 top is sealed, can insert snap ring 201 in the draw-in groove, and make valve lid 2 compress tightly when closely laminating gas valve main part 1 because of the round platform form that is of snap ring 201, can make snap ring 201 cause deformation, make snap ring 201 can closely laminate the draw-in groove inner wall, improve the leakproofness between valve lid 2 and the gas valve main part 1.
Further, the inner wall and the outer wall of snap ring 201 all are provided with two-layer first rubber strip 202, and the tangent plane of first rubber strip 202 is handstand fishbone, and snap ring 201 when embedding to the draw-in groove in, first rubber strip 202 can inwards extrude, increases the thickness in the snap ring 201 embedding draw-in groove, makes the inside and outside both sides of snap ring 201 all closely laminate with the draw-in groove, further improves the leakproofness between valve cover 2 and the gas valve main part 1.
Further, the surface of rubber sleeve 5 is provided with and is annular second rubber strip 501, the tangent plane of second rubber strip 501 is the fishbone form, when rubber sleeve 5 is fixed to the gas tank gas outlet through activity keeper 4, activity keeper 4 can pressurize rubber sleeve 5, second rubber strip 501 can inwards extrude simultaneously and paste and cover 5 surfaces of rubber sleeve, make the contact surface between 5 and the gas tank gas outlet inner wall of rubber sleeve strengthen, second rubber strip 501 can closely laminate the gas tank gas outlet for the rubber material can deform simultaneously, increase substantially the leakproofness.
Further, the tangent plane of sealed snap ring 401 is the concave character form to the left bank, makes movable block 4 when fixed in 5 and gas bottle gas outlets of rubber sleeve, sealed snap ring 401 can closely laminate and gas bottle gas outlets inner wall and surface, makes sealed snap ring 401 and gas bottle gas inlets inner wall and outer wall seal simultaneously, makes the leakproofness improve.
Further, a spring 404 arranged in an annular shape is arranged between the sealing ring 403 and the inner wall of the hole 402, and since a gap is formed between the hole 402 and the air inlet pipe 101, once the rubber sleeve 5 and the gas outlet of the gas tank are loosened and leaked, the sealing ring 403 can be always tightly attached to the outer surface of the air inlet pipe 101 through the elastic force of the spring 404, so that the sealing performance between the hole 402 and the air inlet pipe 101 is improved.
The working principle is as follows: when the gas cylinder sealing device is used, the rubber sleeve 5 is sleeved on the inner wall of the gas outlet of a gas cylinder, the movable clamping bolt 4 is rotated at the same time, the movable clamping bolt 4 extrudes the rubber sleeve 5 to be tightly attached to the inner wall of the gas outlet of the gas cylinder, then, the rubber sleeve 5 is pressurized due to the movable clamping bolt 4, meanwhile, the second rubber strip 501 extrudes inwards to be attached to the outer surface of the rubber sleeve 5, so that the contact surface between the rubber sleeve 5 and the inner wall of the gas outlet of the gas cylinder is enlarged, then, the sealing clamping ring 401 can be tightly attached to the inner wall and the outer surface of the gas outlet of the gas cylinder, the sealing clamping ring 401 is simultaneously sealed with the inner wall and the outer wall of the gas inlet of the gas cylinder, then, due to the gap between the hole 402 and the gas inlet pipe 101, when the rubber sleeve 5 and the gas outlet of the gas cylinder are loosened and leaked, the, first rubber strip 202 can be inside extrusion, increases the thickness in the snap ring 201 embedding draw-in groove, makes inside and outside both sides of snap ring 201 all closely laminate with the draw-in groove, further improves the leakproofness between valve cover 2 and the gas valve main part 1.
The embodiments of the present application have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. A sealing structure for preventing leakage of a gas valve comprises; the gas valve comprises a gas valve main body (1), a valve cover (2) and a gas outlet pipe (3), and is characterized in that the gas outlet pipe (3) is embedded into the right side of the gas valve main body (1), an annular groove (301) is formed in the outer surface of the gas outlet pipe (3), the top end of the gas valve main body (1) is fixedly connected with the valve cover (2) through a nut, a snap ring (201) is welded at the bottom end of the valve cover (2), a gas inlet pipe (101) is embedded into the left side of the gas valve main body (1), a gas pressure valve (102) is embedded into the top end of the gas inlet pipe (101), a movable snap bolt (4) is embedded into the outer surface of the gas inlet pipe (101), and a rubber sleeve (5) is;
the left side surface embedding of activity bayonet catch (4) is provided with sealed snap ring (401), the left side of activity bayonet catch (4) is run through and is provided with hole (402), the inner wall of hole (402) is provided with sealing ring (403).
2. A seal structure for leakage prevention of a gas valve according to claim 1, wherein the inner walls of the grooves (301) are each provided with a rubber seal strip.
3. The gas valve leakage-proof sealing structure according to claim 1, wherein a clamping groove is formed at the top end of the gas valve body (1), the clamping groove and the snap ring (201) are arranged in a matched manner, the cut surface of the snap ring (201) is in a truncated cone shape, and the snap ring (201) is made of rubber.
4. The leak-proof sealing structure for the gas valve as claimed in claim 1, wherein the inner wall and the outer wall of the snap ring (201) are both provided with two layers of the first rubber strips (202), and the section of each first rubber strip (202) is an inverted fishbone.
5. The seal structure for leakage prevention of a gas valve as claimed in claim 1, wherein the outer surface of the rubber sleeve (5) is provided with a second rubber strip (501) in a ring shape, and the section of the second rubber strip (501) is in a fishbone shape.
6. A leak-proof sealing structure for a gas valve according to claim 1, wherein the cross-section of the seal snap ring (401) is in a shape of a letter concave inclined to the left.
7. A seal arrangement for leakage prevention of gas valves according to claim 1, characterized in that springs (404) are arranged in an annular arrangement between the sealing ring (403) and the inner wall of the hole (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020087897.7U CN212155966U (en) | 2020-01-14 | 2020-01-14 | Sealing structure for preventing leakage of gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020087897.7U CN212155966U (en) | 2020-01-14 | 2020-01-14 | Sealing structure for preventing leakage of gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212155966U true CN212155966U (en) | 2020-12-15 |
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ID=73709101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020087897.7U Active CN212155966U (en) | 2020-01-14 | 2020-01-14 | Sealing structure for preventing leakage of gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212155966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115356436A (en) * | 2022-07-26 | 2022-11-18 | 福州大学 | High leakproofness toxic gas analysis appearance |
| CN116518139A (en) * | 2023-05-08 | 2023-08-01 | 广州中建能源科技有限公司 | Fireproof and explosion-proof control box for gas valve |
-
2020
- 2020-01-14 CN CN202020087897.7U patent/CN212155966U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115356436A (en) * | 2022-07-26 | 2022-11-18 | 福州大学 | High leakproofness toxic gas analysis appearance |
| CN115356436B (en) * | 2022-07-26 | 2024-06-04 | 福州大学 | High leakproofness poisonous gas analysis appearance |
| CN116518139A (en) * | 2023-05-08 | 2023-08-01 | 广州中建能源科技有限公司 | Fireproof and explosion-proof control box for gas valve |
| CN116518139B (en) * | 2023-05-08 | 2024-03-19 | 广州中建能源科技有限公司 | Fireproof and explosion-proof control box for gas valve |
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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: 20210713 Address after: 115004 No.76, Zhifa Street West, Yingkou District, China (Liaoning) pilot Free Trade Zone, Yingkou City, Liaoning Province Patentee after: Yingkou Huayi Gas Equipment Co.,Ltd. Address before: Da Dong Zhen Jia Rong Cun Cang Bei Tang, Dapu County, Meizhou City, Guangdong Province Patentee before: Qiu Junwei |
|
| TR01 | Transfer of patent right |