CN214466436U - Gas emergency cut-off valve - Google Patents
Gas emergency cut-off valve Download PDFInfo
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- CN214466436U CN214466436U CN202120029844.4U CN202120029844U CN214466436U CN 214466436 U CN214466436 U CN 214466436U CN 202120029844 U CN202120029844 U CN 202120029844U CN 214466436 U CN214466436 U CN 214466436U
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Abstract
The utility model provides a gas emergency cut-off valve belongs to valve technical field. The gas emergency cut-off valve solves the problems that the valve body of the existing gas emergency cut-off valve is formed by cast steel or cast aluminum, so that air holes are easily generated in the valve body, the corrosion resistance is poor, the strength is not high, and the service life is short. This gas emergency cut-off valve, which comprises a valve body, the valve body both ends are seted up and are had air inlet and gas outlet, the last position department that corresponds air inlet and gas outlet of valve body is equallyd divide and is do not equipped with flange, upper cover plate and lower apron are installed respectively to the upper and lower both ends of valve body, be equipped with the pull rod in the valve body, the pull rod inner stretches into the valve body in-connection and has sealing rubber, still be provided with big spring in the valve body, flange and valve body all adopt forged steel or roll steel sheet or seamless steel pipe, the valve body surface adopts electroplate, electrophoresis and spray plastics technology are handled, upper cover plate and lower apron all adopt to roll the steel sheet. The utility model has the advantages of high strength, corrosion resistance and prolonged service life.
Description
Technical Field
The utility model belongs to the technical field of the valve, a gas emergency cut-off valve is related to.
Background
The gas emergency cut-off valve is used for cutting off the source of upstream dangerous materials when equipment is in failure, corrosion damage and sealing failure and leakage occurs or is in emergency, so that the accident range is prevented from being enlarged, the influence of accidents is controlled, and the accident loss is reduced.
The valve body of the traditional gas emergency cut-off valve is formed by cast steel or cast aluminum, and pores are easily generated in the valve body formed by cast steel, so that the corrosion resistance is poor, and the flatness of the surface of the valve body is influenced; the valve body formed by cast aluminum also has the problem that air holes are easily generated inside, so that the corrosion resistance is poor, and meanwhile, the problem of low strength is solved, thereby influencing the service life of the stop valve.
Disclosure of Invention
The utility model aims at providing a high strength, corrosion-resistant gas emergency cut-off valve to the above-mentioned problem that exists among the prior art.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides a gas emergency cut-off valve, includes the valve body, the valve body both ends set up and have air inlet and gas outlet, the valve body on the position department of corresponding air inlet and gas outlet equally divide and do not be equipped with flange, the valve body in have the gas mouth of crossing that can be linked together air inlet and gas outlet, its characterized in that, upper cover plate and lower apron are installed respectively to the upper and lower both ends of valve body, the valve body in be equipped with the pull rod, and this pull rod inner stretches into the valve body in-connection and has the sealed rubber that can make air inlet and gas outlet block the intercommunication with the gas mouth of crossing is sealed, the valve body in still be provided with big spring, the big spring both ends are supported respectively on in valve body inner wall and sealed rubber, the pull rod top stretches out the valve body outer connection protective cover, lower part threaded connection of threaded connection have the connector body, the pull rod be located the connector body, connector body inner stretches into the valve body in-connection and has the seal receptacle, the lateral part of the connector body is also provided with an actuator which is used for controlling the pull rod to drive the sealing rubber to move inwards so as to seal the air inlet and the air outlet and block the communication, the two ends of the valve body are respectively welded on the connecting flange, the connecting flange and the valve body are all made of forged steel or rolled steel plates or seamless steel pipes, the surface of the valve body is processed by adopting electroplating, electrophoresis and plastic spraying processes, and the upper cover plate and the lower cover plate are made of rolled steel plates.
In foretell gas emergency shutdown valve, stretch into draw bar tip in the valve body is connected with the closing plate that supplies sealing rubber installation, closing plate bottom be equipped with the lock cap that is connected with draw bar inner, lock cap and closing plate between be equipped with the little spring, the both ends of little spring support respectively to lean on closing plate inner wall and lock cap.
In the gas emergency cut-off valve, the bottom of the sealing seat is also provided with an octagonal cap in threaded connection with the inner end of the connector body.
In the above emergency cut-off valve for gas, the inner wall of the inner end of the connector body is connected with a pressing cap in a threaded manner.
In the gas emergency cut-off valve, a first O-shaped ring is arranged between the sealing plate and the pull rod, a second O-shaped ring is arranged between the sealing seat and the pull rod, the top of the second O-shaped ring is abutted against the bottom of the upper cover plate, and a framework sealing ring is arranged between the top of the pressure cap and the connector body.
Compared with the prior art, the gas emergency cut-off valve has the following advantages: the valve body is welded in sections to strengthen the connection strength of all parts, the surface of the valve body is treated by electroplating, electrophoresis and plastic spraying processes, and diversified surface treatment modes are adopted, so that the corrosion resistance degree is improved, the strength is improved, and the service life is prolonged.
Drawings
Fig. 1 is a schematic view of a partial sectional structure of the gas quick action valve.
In the figure, 1, a valve body; 2. a connecting flange; 3. a gas passing port; 4. an upper cover plate; 5. a lower cover plate; 6. a pull rod; 7. sealing rubber; 8. a large spring; 9. a protective cover; 10. a connector body; 11. a sealing seat; 12. an actuator; 13. a sealing plate; 14. a lock cap; 15. a small spring; 16. an octagonal cap; 17. pressing the cap; 18. a first O-ring; 19. a second O-ring; 20. skeleton sealing washer.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in figure 1, the gas emergency cut-off valve comprises a valve body 1, wherein both ends of the valve body 1 are provided with a gas inlet and a gas outlet, the positions, corresponding to the gas inlet and the gas outlet, on the valve body 1 are respectively provided with a connecting flange 2, a gas passing port 3 capable of communicating the gas inlet and the gas outlet is arranged in the valve body 1, the upper end and the lower end of the valve body 1 are respectively provided with an upper cover plate 4 and a lower cover plate 5, a pull rod 6 is arranged in the valve body 1, the inner end of the pull rod 6 extends into the valve body 1 and is connected with a sealing rubber 7 capable of sealing the gas passing port 3 to block and communicate the gas inlet and the gas outlet, a large spring 8 is also arranged in the valve body 1, both ends of the large spring 8 are respectively abutted against the inner wall of the valve body 1 and the sealing rubber 7, the top end of the pull rod 6 extends out of the valve body 1 and is externally connected with a protective cover 9, the lower part of the protective cover 9 is in threaded connection with a connector body 10, the pull rod 6 is arranged in the connector body 10, the inner end of the connector body 10 extends into the valve body 1 and is connected with a sealing seat 11, an actuator 12 for controlling the pull rod 6 to drive the sealing rubber 7 to move inwards so as to seal the air inlet 3 and the air outlet and block the communication is arranged at the side part of the connector 10, whether the air inlet 3 is sealed or not is controlled by the actuator 12 so as to realize the effect of communicating or blocking the air inlet and the air outlet, the two connecting flanges 2 are respectively welded at the two ends of the valve body 1, the connecting flanges 2 and the valve body 1 are both made of forged steel or rolled steel plates or seamless steel pipes, the surface of the valve body 1 is processed by adopting electroplating, electrophoresis and plastic spraying processes, diversified surface processing modes are adopted, so that the corrosion resistance degree is improved, the surface strength is improved, the upper cover plate 4 and the lower cover plate 5 are both made of rolled steel plates, the end part of the pull rod 6 extending into the valve body 1 is connected with a sealing plate 13 for installing the sealing rubber 7, the bottom of the sealing plate 13 is provided with a locking cap 14 connected with the inner end of the pull rod 6, and a small spring 15 is arranged between the locking cap 14 and the sealing plate 13, two ends of the small spring 15 are respectively abutted against the inner wall of the sealing plate 13 and the locking cap 14, the bottom of the sealing seat 11 is also provided with an octagonal cap 16 in threaded connection with the inner end of the connector body 10, the inner wall of the inner end of the connector body 10 is in threaded connection with a pressing cap 17, and the pressing cap 17 is sleeved on the pull rod 6.
To be more specific, in order to improve the sealing performance, a first O-ring 18 is arranged between the sealing plate 13 and the pull rod 6, a second O-ring 19 is arranged between the sealing seat 11 and the pull rod 6, the top of the second O-ring 19 abuts against the bottom of the upper cover plate 4, and a skeleton sealing ring 20 is arranged between the top of the pressing cap 17 and the connector body 10.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides a gas emergency cut-off valve, includes valve body (1), valve body (1) both ends set up and have air inlet and gas outlet, valve body (1) on the position department that corresponds air inlet and gas outlet equally divide and do not be equipped with flange (2), valve body (1) in have cross gas port (3) that can be linked together air inlet and gas outlet, its characterized in that, upper cover plate (4) and lower apron (5) are installed respectively to the upper and lower both ends of valve body (1), valve body (1) in be equipped with pull rod (6), and this pull rod (6) inner stretches into valve body (1) in-connection have can make air inlet and gas outlet block sealing rubber (7) of intercommunication with cross gas port (3) sealed, valve body (1) in still be provided with big spring (8), big spring (8) both ends are leaned on respectively on valve body (1) inner wall and sealing rubber (7), the top end of the pull rod (6) extends out of the valve body (1) and is connected with a protective cover (9), the lower part of the protective cover (9) is in threaded connection with a connector body (10), the pull rod (6) is positioned in the connector body (10), the inner end of the connector body (10) extends into the valve body (1) and is connected with a sealing seat (11), an actuator (12) which is used for controlling a pull rod (6) to drive a sealing rubber (7) to move inwards so as to seal the air passing port (3) and enable the air inlet and the air outlet to be blocked and communicated is further installed on the side portion of the connector body (10), the two connecting flanges (2) are respectively welded at the two ends of the valve body (1), the connecting flange (2) and the valve body (1) are both made of forged steel or rolled steel plates or seamless steel tubes, the surface of the valve body (1) is treated by adopting electroplating, electrophoresis and plastic spraying processes, and the upper cover plate (4) and the lower cover plate (5) are both rolled steel plates.
2. The gas emergency shut-off valve according to claim 1, characterized in that a sealing plate (13) for mounting a sealing rubber (7) is connected to an end portion of the pull rod (6) extending into the valve body (1), a locking cap (14) connected with an inner end of the pull rod (6) is arranged at a bottom portion of the sealing plate (13), a small spring (15) is arranged between the locking cap (14) and the sealing plate (13), and two ends of the small spring (15) are respectively abutted against an inner wall of the sealing plate (13) and the locking cap (14).
3. The gas quick action emergency valve according to claim 1, wherein the bottom of the sealing seat (11) is further provided with an octagonal cap (16) which is in threaded connection with the inner end of the connector body (10).
4. A gas quick action emergency valve according to claim 2, wherein a press cap (17) is threadedly attached to the inner wall of the inner end portion of said connector body (10).
5. The gas quick action emergency valve according to claim 4, wherein a first O-ring (18) is arranged between the sealing plate (13) and the pull rod (6), a second O-ring (19) is arranged between the sealing seat (11) and the pull rod (6), the top of the second O-ring (19) is abutted against the bottom of the upper cover plate (4), and a skeleton sealing ring (20) is arranged between the top of the pressing cap (17) and the connector body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120029844.4U CN214466436U (en) | 2021-01-06 | 2021-01-06 | Gas emergency cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120029844.4U CN214466436U (en) | 2021-01-06 | 2021-01-06 | Gas emergency cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466436U true CN214466436U (en) | 2021-10-22 |
Family
ID=78110943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120029844.4U Active CN214466436U (en) | 2021-01-06 | 2021-01-06 | Gas emergency cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466436U (en) |
-
2021
- 2021-01-06 CN CN202120029844.4U patent/CN214466436U/en active Active
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