CN201513574U - Pneumatic rapid cut-off valve - Google Patents
Pneumatic rapid cut-off valve Download PDFInfo
- Publication number
- CN201513574U CN201513574U CN2009202572438U CN200920257243U CN201513574U CN 201513574 U CN201513574 U CN 201513574U CN 2009202572438 U CN2009202572438 U CN 2009202572438U CN 200920257243 U CN200920257243 U CN 200920257243U CN 201513574 U CN201513574 U CN 201513574U
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Abstract
The utility model relates to a pneumatic rapid cut-off valve, and belongs to the technical field of valves. The cut-off valve comprises an air cylinder and a stop valve which are connected through a connecting barrel, and further consists of a change-over valve, wherein a valve core and a valve seat which are mutually matched are arranged on a channel in the stop valve, the valve core is connected with a valve rod, the valve rod penetrates into the air cylinder to connect with one side of a piston in the air cylinder, a cavity without rod on the other side of the piston in the air cylinder is provided with a spring, the change-over valve at least comprises a two-position three-way, wherein one of the ports is connected with a compressed air source externally, the second port thereof is connected with a cavity with rod on one side of the piston in the air cylinder through a pipeline, and the third port is communicated with the cavity without rod through a pipeline. When the change-over valve is located on two positions, the four ports are respectively alternately connected in twos. The cut-off valve can guarantee to quickly cut off the stop valve, thereby avoiding weaknesses and risks in the prior art that a valve is quickly cut off only depending on driving the valve rod by the spring, and the pneumatic rapid cut-off valve can be applied on a high-pressure gas pipeline.
Description
Technical field
The utility model relates to a kind of cut-off valve, relates in particular to the cut-off valve on a kind of gas pipeline, belongs to valve technology field.
Background technique
All cut-off valve open in usual to be set on the gas pipeline, when emergency episode occurring, can cut off the gas pipeline path rapidly, enlarge to prevent accident.Existing at present cut-off valve structure commonly used as shown in Figure 1, comprise by connecting cylinder 1 joining cylinder 2 and stop valve 3, runner in the stop valve 3 is provided with spool 4 and the valve seat 5 that cooperatively interacts, spool 4 is connected with valve rod 6, valve rod 6 stretches into cylinder 2 piston 7 one sides interior and in the cylinder 2 and connects, the rodless cavity 8 of cylinder 2 inner carriers 7 opposite sides is provided with spring 9, and the rod chamber 10 of cylinder 2 inner carriers 7 one sides is by external control valve 13 of pipeline and outlet valve 12.Should have cut-off valve now when often opening, control valve 13 is opened, and external compression gas continues to enter in the rod chamber 10 of cylinder 2, and the pressurized gas that enters rod chamber 10 continues pressuring spring 9 and is in compressive state, thereby pulling valve rod 6 and spool 4 lift off a seat 5, and combustion gas is able to normal flow and crosses cut-off valve; When emergency episode occurring, control valve 13 is triggered and closes, and outside no pressurized gas enters cylinder 2, and spring 9 is upspring and driven valve rod 6 spool 4 is resisted against on the valve seat 5, and the residual gas in the rod chamber 10 is discharged from outlet valve 12.
Above-mentioned existing cut-off valve is easier to aging elastic force be suffered damage owing to spring is in compression fatigue state and spring ratio for a long time; Therefore in case spring is during pressurized, it can not in time be upspring and reset or not enough to the power that compresses of valve rod and spool, thereby can not the fast shut-off gas pipeline even cause gas pipeline not cut off.
The model utility content
The technical problems to be solved in the utility model is to propose the pneumatic repid cut-off valve of the reliable fast shut-off gas pipeline of a kind of energy.
The technical solution of the utility model is: a kind of pneumatic repid cut-off valve, comprise by joining cylinder of connecting cylinder and stop valve, also comprise selector valve, runner in the described stop valve is provided with spool and the valve seat that cooperatively interacts, described spool is connected with valve rod, and described valve rod stretches into cylinder piston one side interior and in the cylinder and connects; The rodless cavity of described piston opposite side is provided with spring; Described selector valve contains two-position four-way at least, and the external compressed gas source of one of its port, two of its port pass through first pipeline and be communicated with the rod chamber of piston one side, and three of its port passes through second pipeline and is communicated with rodless cavity; When described selector valve is in the position for the moment, two conductings of one of described port and port, described port three with four conductings of port; When described selector valve is in position two, three conductings of one of described port and port, described port two with four conductings of port.
Pneumatic repid cut-off valve of the present utility model is in use: one, when often opening, selector valve is in position one, external compression gas in two of one of selector valve port and port continues to enter the rod chamber of cylinder and pressuring spring be in compressive state, thereby pulling valve rod and spool are lifted off a seat, and combustion gas is able to normal flow and crosses cut-off valve; Two, when emergency episode occurring, selector valve is in position two, external compression gas continues to enter in the rodless cavity of cylinder through three of one of selector valve port and port, like this, valve rod is just driven under the acting in conjunction of spring force and compression pressure, thereby spool is resisted against on the valve seat fast and closely.When Chang Kai or emergency episode, the residual gas in rod chamber or the rodless cavity all can be discharged through four of the port of selector valve.
Pneumatic repid cut-off valve of the present utility model is by the selector valve of brand-new design and the gas circuit structure that is connected with cylinder thereof, make the cylinder of existing repid cut-off valve become two-way function by single effect, valve rod is subjected to the double reaction plus of spring force and gas pressure when promptly closing stop valve, even spring force weakens even loses elastic force like this, can guarantee that still stop valve can reliably be cut off apace; Thereby defective and the risk that can avoid existing repid cut-off valve to only depend on the spring band ovable valve stem and exist, and can be applied on the high-pressure gas pipeline.
Improvement of the technical scheme is: described spring is the nested each other primary and secondary spring more than two layers.
Further improvement in the technical proposal is: four of described port is connected to outlet valve, and four of described port is connected to pressure regulator valve and pressure gauge.
The further improvement of technique scheme is: described selector valve is the pneumatic reversing solenoid valve of two-position four-way.
Description of drawings
Below in conjunction with accompanying drawing pneumatic repid cut-off valve of the present utility model is described further.
Fig. 1 is the cross-sectional view of existing cut-off valve.
Fig. 2 is the cross-sectional view of the utility model embodiment's pneumatic repid cut-off valve.
Embodiment
Embodiment
The pneumatic repid cut-off valve of present embodiment comprises by connecting cylinder 1 joining cylinder 2 and stop valve 3 as shown in Figure 2, also comprises selector valve 11.Runner in the stop valve 3 is provided with spool 4 and the valve seat 5 that cooperatively interacts, and spool 4 is connected with valve rod 6, and valve rod 6 stretches into cylinder 2 piston 7 one sides interior and in the cylinder 2 and connects, and the rodless cavity 8 of cylinder 2 inner carriers 7 opposite sides is provided with spring 9.Spring 9 adopts the nested each other primary and secondary spring more than two layers.
The use condition of the pneumatic repid cut-off valve of present embodiment repeats no more referring to aforementioned model utility content part herein.What remark additionally is: 1, spring 9 adopts the nested each other primary and secondary spring more than two layers, can further improve the elastic force of spring 9, thereby improves the cut-off velocity and the reliability of stop valve 3; Can alleviate noise through outlet valve 12 when 2, the residual gas of rodless cavity 8 and rod chamber 10 is discharged by four of port in the cylinder 2; 3, external compressed gas source can be stablized air pressure through pressure regulator valve 15 before entering selector valve 11.
Pneumatic repid cut-off valve of the present utility model is not limited to the various embodiments described above, such as: 1) selector valve 11 also can be selected the pneumatic reversing solenoid valve of two-position five-way or 3-position 4-way for use, and solenoid valve 11 also can be replaced by mechanical commutation valve, pilot operated directional control valve or other selector valves of two-position four-way, two-position five-way or 3-position 4-way; 2) threeway 13 also can be replaced by four-way; 3) outlet valve 12, pressure regulator valve 15 and pressure gauge 16 also can save; Or the like.All employings are equal to replaces the technological scheme that forms, and all drops on the protection domain of the utility model requirement.
Claims (4)
1. pneumatic repid cut-off valve, comprise by joining cylinder of connecting cylinder and stop valve, also comprise selector valve, the runner in the described stop valve is provided with spool and the valve seat that cooperatively interacts, described spool is connected with valve rod, and described valve rod stretches into cylinder piston one side interior and in the cylinder and connects; The rodless cavity of described piston opposite side is provided with spring; It is characterized in that: described selector valve contains two-position four-way at least, and the external compressed gas source of one of its port, two of its port pass through first pipeline and be communicated with the rod chamber of piston one side, and three of its port passes through second pipeline and is communicated with rodless cavity; When described selector valve is in the position for the moment, two conductings of one of described port and port, described port three with four conductings of port; When described selector valve is in position two, three conductings of one of described port and port, described port two with four conductings of port.
2. according to the described pneumatic repid cut-off valve of claim 1, it is characterized in that: described spring is the nested each other primary and secondary spring more than two layers.
3. according to the described pneumatic repid cut-off valve of claim 2, it is characterized in that: four of described port is connected to outlet valve, and four of described port is connected to pressure regulator valve and pressure gauge.
4. according to claim 1,2 or 3 described pneumatic repid cut-off valves, it is characterized in that: described selector valve is the pneumatic reversing solenoid valve of two-position four-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202572438U CN201513574U (en) | 2009-10-30 | 2009-10-30 | Pneumatic rapid cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202572438U CN201513574U (en) | 2009-10-30 | 2009-10-30 | Pneumatic rapid cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201513574U true CN201513574U (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202572438U Expired - Fee Related CN201513574U (en) | 2009-10-30 | 2009-10-30 | Pneumatic rapid cut-off valve |
Country Status (1)
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| CN (1) | CN201513574U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453169A (en) * | 2013-05-27 | 2013-12-18 | 大连博锐特科技工程有限公司 | Internal safety stop valve device for oil storage pipeline |
| CN103629424A (en) * | 2013-12-04 | 2014-03-12 | 中国飞机强度研究所 | Fast pneumatic valve |
| CN103672057A (en) * | 2013-12-10 | 2014-03-26 | 湖北高中压阀门有限责任公司 | High-pressure safety rapid shut off valve |
| CN104019268A (en) * | 2014-06-13 | 2014-09-03 | 江南阀门有限公司 | Hydrodynamic executing mechanism |
| CN104847904A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
| CN104847903A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
| CN105351600A (en) * | 2015-11-27 | 2016-02-24 | 安徽六国化工股份有限公司 | Pneumatic valve using air cylinder as actuator |
| CN108468856A (en) * | 2018-05-18 | 2018-08-31 | 南通东方船用设备制造有限公司 | Single-acting air spring pneumatic actuator |
| CN108488469A (en) * | 2018-05-17 | 2018-09-04 | 南通东方船用设备制造有限公司 | Single-acting spring reset pressure balance type pneumatic actuator |
| CN109838593A (en) * | 2019-02-13 | 2019-06-04 | 大唐绥化热电有限公司 | Thermoelectricity steam turbine hydrodynamic quick closing valve exhaust check valve and quick closing valve method |
| CN112361062A (en) * | 2020-11-24 | 2021-02-12 | 北京北方华创微电子装备有限公司 | Unidirectional conduction control device |
| CN113389931A (en) * | 2021-06-15 | 2021-09-14 | 邵曙 | Pneumatic valve actuator with heat preservation device |
| CN114135515A (en) * | 2021-11-30 | 2022-03-04 | 福建晋江天然气发电有限公司 | Actuating mechanism and method for preventing internal leakage of anti-surge air release valve |
-
2009
- 2009-10-30 CN CN2009202572438U patent/CN201513574U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453169A (en) * | 2013-05-27 | 2013-12-18 | 大连博锐特科技工程有限公司 | Internal safety stop valve device for oil storage pipeline |
| CN103629424B (en) * | 2013-12-04 | 2016-08-17 | 中国飞机强度研究所 | A kind of fast air-operated valve |
| CN103629424A (en) * | 2013-12-04 | 2014-03-12 | 中国飞机强度研究所 | Fast pneumatic valve |
| CN103672057A (en) * | 2013-12-10 | 2014-03-26 | 湖北高中压阀门有限责任公司 | High-pressure safety rapid shut off valve |
| CN104019268A (en) * | 2014-06-13 | 2014-09-03 | 江南阀门有限公司 | Hydrodynamic executing mechanism |
| CN104847904A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
| CN104847903A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
| CN105351600A (en) * | 2015-11-27 | 2016-02-24 | 安徽六国化工股份有限公司 | Pneumatic valve using air cylinder as actuator |
| CN108488469A (en) * | 2018-05-17 | 2018-09-04 | 南通东方船用设备制造有限公司 | Single-acting spring reset pressure balance type pneumatic actuator |
| CN108468856A (en) * | 2018-05-18 | 2018-08-31 | 南通东方船用设备制造有限公司 | Single-acting air spring pneumatic actuator |
| CN109838593A (en) * | 2019-02-13 | 2019-06-04 | 大唐绥化热电有限公司 | Thermoelectricity steam turbine hydrodynamic quick closing valve exhaust check valve and quick closing valve method |
| CN112361062A (en) * | 2020-11-24 | 2021-02-12 | 北京北方华创微电子装备有限公司 | Unidirectional conduction control device |
| CN112361062B (en) * | 2020-11-24 | 2022-10-21 | 北京北方华创微电子装备有限公司 | Unidirectional conduction control device |
| CN113389931A (en) * | 2021-06-15 | 2021-09-14 | 邵曙 | Pneumatic valve actuator with heat preservation device |
| CN114135515A (en) * | 2021-11-30 | 2022-03-04 | 福建晋江天然气发电有限公司 | Actuating mechanism and method for preventing internal leakage of anti-surge air release valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20121030 |