CN220891087U - Pilot type self-operated double-seat control valve capable of realizing quick opening and closing - Google Patents
Pilot type self-operated double-seat control valve capable of realizing quick opening and closing Download PDFInfo
- Publication number
- CN220891087U CN220891087U CN202322624038.3U CN202322624038U CN220891087U CN 220891087 U CN220891087 U CN 220891087U CN 202322624038 U CN202322624038 U CN 202322624038U CN 220891087 U CN220891087 U CN 220891087U
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- control valve
- double
- seat control
- cylinder body
- valve
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- 238000007789 sealing Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model relates to a pilot type self-operated double-seat control valve capable of realizing quick opening and closing, wherein a driving structure is arranged on the double-seat control valve to drive a valve rod of the double-seat control valve to move up and down so as to open or close the double-seat control valve; the medium port is arranged on the double-seat control valve and is communicated with the air inlet side of the valve cavity of the double-seat control valve; the driving structure is a cylinder, the cylinder comprises a cylinder body and a piston, the cylinder body is fixedly connected with a double-seat control valve, the piston is arranged in the cylinder body and divides the inner cavity of the cylinder body into an upper cavity and a lower cavity, the cylinder body is provided with an air inlet, the air inlet is communicated with the upper cavity, the upper end of a valve rod of the double-seat control valve penetrates through the cylinder body, stretches into the lower cavity and is connected with the piston, and the air inlet is connected with a medium port through an external pipeline; and a pilot hole is arranged on the lower valve rod of the double-seat control valve. The quick opening and closing can be realized without an external air source, and the sealing is good.
Description
Technical Field
The utility model relates to a double-seat control valve, in particular to a self-operated double-seat control valve capable of realizing quick opening and closing by a pilot.
Background
At present, a double-seat control valve is still suitable for occasions with relatively dirty medium and relatively high pressure, the double-seat control valve generally adopts a common valve seat and valve core structure, the valve core and the valve rod are integrated, and are solid and adopt up-and-down guiding; when the valve core is close to closing, the valve is easy to generate self-sustaining oscillation phenomenon, and the leakage quantity is large; meanwhile, the common double-seat control valve adopts a pneumatic film type actuating mechanism, so that the available air source pressure is low, the action is slow, and the valve cannot be suitable for places requiring quick closing.
In a gas engine unit system, a medium is usually high-pressure natural gas, a control valve needs to be opened and closed rapidly, the control valve with a common structure cannot meet the requirement of rapid opening and closing within 1s, and the inherent characteristics of a common double-seat control valve are utilized and improved to realize the requirements of rapid opening and closing and good sealing.
Disclosure of Invention
In order to solve the problems, the utility model provides a pilot type self-operated double-seat control valve (medium is high-pressure gas) capable of realizing quick opening and closing, which can realize quick opening and closing without an external gas source and has good sealing.
The technical scheme of the utility model is as follows:
A pilot type self-operated double-seat control valve capable of realizing quick opening and closing, a driving structure is arranged on the double-seat control valve to drive a valve rod of the double-seat control valve to move up and down and open or close the double-seat control valve; the medium port is arranged on the double-seat control valve and is communicated with the air inlet side of the valve cavity of the double-seat control valve; the driving structure is a cylinder, the cylinder comprises a cylinder body and a piston, the cylinder body is fixedly connected with a double-seat control valve, the piston is arranged in the cylinder body and divides the inner cavity of the cylinder body into an upper cavity and a lower cavity, the cylinder body is provided with an air inlet, the air inlet is communicated with the upper cavity, the upper end of a valve rod of the double-seat control valve penetrates through the cylinder body, stretches into the lower cavity and is connected with the piston, and the air inlet is connected with a medium port through an external pipeline;
and a pilot hole is arranged on the lower valve rod of the double-seat control valve.
The cylinder body is provided with two holes, one hole is communicated with the upper cavity, the quick-release valve is arranged on the upper cavity, the other hole is communicated with the lower cavity, and the screw plug is arranged in the lower cavity.
And a reset spring is arranged on the lower valve rod of the double-seat control valve.
The utility model has the advantages that the design is reasonable, the structure is simple, the air cylinder is adopted to replace the traditional pneumatic film type actuating mechanism, the medium (high-pressure air) is used as an air source, the external air source is not needed, the lower cavity of the air cylinder has the effect of a pneumatic spring, and the boosting effect is realized when the air cylinder resets to close the valve; the pilot hole is arranged on the lower valve rod of the double-seat control valve, so that the shaking and impact of the valve core can be effectively reduced, and meanwhile, the sealing thrust of the valve core is increased by utilizing the medium pressure, so that the sealing performance is better (a soft sealing structure is adopted, and 0 leakage can be realized by sealing); the lower valve rod of the double-seat control valve is provided with a return spring, so that the valve core (integrated with the lower valve rod) is sealed, and the valve core is closed more rapidly.
Drawings
FIG. 1 is a schematic diagram of a pilot operated self-operated double seat control valve capable of achieving quick opening and closing.
In the figure, a valve rod 1-1 of a double-seat control valve, a valve cavity 1-2 of the double-seat control valve, a lower valve rod 1-3 of the double-seat control valve, a bottom cover 1-4 of the double-seat control valve, a medium port 2, a cylinder body 3-1, a piston 3-2, an upper cavity 3-3, a lower cavity 3-4, an air inlet 3-5, an external pipeline 4, a pilot hole 5, a quick discharge valve 6, a screw plug 7, a return spring 8 and a spring seat 9.
Detailed Description
As shown in the figure, a pilot type self-operated double-seat control valve capable of realizing quick opening and closing is characterized in that a driving structure is arranged on the double-seat control valve to drive a valve rod 1-1 of the double-seat control valve to move up and down so as to open or close the double-seat control valve; the medium port 2 is communicated with the air inlet side of the valve cavity 1-3 of the double-seat control valve; the driving structure is a cylinder, the cylinder comprises a cylinder body 3-1 and a piston 3-2, the cylinder body 3-1 is fixedly connected to a double-seat control valve, the piston 3-2 is arranged in the cylinder body 3-1 and divides the inner cavity of the cylinder body 3-1 into an upper cavity 3-3 and a lower cavity 3-4, an air inlet 3-5 is arranged on the cylinder body 3-1, the air inlet 3-5 is communicated with the upper cavity 3-3, and the upper end of a valve rod 1-1 of the double-seat control valve penetrates through the cylinder body 3-1, stretches into the lower cavity 3-4 and is connected with the piston 3-2, and the air inlet 3-5 is connected with a medium port 2 through an external pipeline 4;
a pilot hole 5 is arranged on the lower valve rod 1-3 of the double-seat control valve;
Two holes are formed in the cylinder body 2-1, one hole is communicated with the upper cavity 2-4, a quick-release valve 6 is arranged on the upper cavity, the other hole is communicated with the lower cavity 2-5, and a screw plug 7 is arranged in the lower cavity;
A return spring 8 is arranged on the lower valve rod 1-of the double-seat control valve (the two ends of the return spring 8 respectively prop against a spring seat 9 arranged on the lower valve rod 1-3 of the double-seat control valve and a bottom cover 1-4 of the double-seat control valve).
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art should be able to apply equivalents and modifications to the technical solution and the inventive concept thereof within the scope of the present utility model.
Claims (3)
1. A pilot type self-operated double-seat control valve capable of realizing quick opening and closing, a driving structure is arranged on the double-seat control valve to drive a valve rod of the double-seat control valve to move up and down and open or close the double-seat control valve; the double-seat control valve is characterized in that a medium port is arranged on the double-seat control valve and is communicated with the air inlet side of a valve cavity of the double-seat control valve; the driving structure is a cylinder, the cylinder comprises a cylinder body and a piston, the cylinder body is fixedly connected with a double-seat control valve, the piston is arranged in the cylinder body and divides the inner cavity of the cylinder body into an upper cavity and a lower cavity, the cylinder body is provided with an air inlet, the air inlet is communicated with the upper cavity, the upper end of a valve rod of the double-seat control valve penetrates through the cylinder body, stretches into the lower cavity and is connected with the piston, and the air inlet is connected with a medium port through an external pipeline;
and a pilot hole is arranged on the lower valve rod of the double-seat control valve.
2. The pilot operated type self-operated double-seat control valve capable of realizing quick opening and closing according to claim 1, wherein two holes are formed in the cylinder body, one hole is communicated with the upper cavity, a quick-release valve is arranged on the upper cavity, the other hole is communicated with the lower cavity, and a screw plug is arranged in the lower cavity.
3. The pilot operated type self-operated double seat control valve capable of realizing quick opening and closing according to claim 1, wherein a return spring is arranged on a lower valve rod of the double seat control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322624038.3U CN220891087U (en) | 2023-09-27 | 2023-09-27 | Pilot type self-operated double-seat control valve capable of realizing quick opening and closing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322624038.3U CN220891087U (en) | 2023-09-27 | 2023-09-27 | Pilot type self-operated double-seat control valve capable of realizing quick opening and closing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891087U true CN220891087U (en) | 2024-05-03 |
Family
ID=90837646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322624038.3U Active CN220891087U (en) | 2023-09-27 | 2023-09-27 | Pilot type self-operated double-seat control valve capable of realizing quick opening and closing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891087U (en) |
-
2023
- 2023-09-27 CN CN202322624038.3U patent/CN220891087U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |