CN204239833U - Limiting pressure closing valve - Google Patents
Limiting pressure closing valve Download PDFInfo
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- CN204239833U CN204239833U CN201420412938.XU CN201420412938U CN204239833U CN 204239833 U CN204239833 U CN 204239833U CN 201420412938 U CN201420412938 U CN 201420412938U CN 204239833 U CN204239833 U CN 204239833U
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- cylinder sleeve
- piston
- joint
- return spring
- valve body
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Abstract
The utility model relates to a kind of limiting pressure closing valve, is made up of a valve body and two groups of cylinder sleeves, piston, return spring, position limit pin, fluid director, joints; Described valve body is tubular structure, and one end of its endoporus is provided with cylinder sleeve, is provided with piston in cylinder sleeve, is provided with return spring between piston shaft and cylinder sleeve, and piston shaft is provided with position limit pin, and cylinder sleeve outer end is connected with joint, is provided with fluid director between cylinder sleeve and joint; The other end and the said structure of valve body inner bore are symmetrical arranged, and are provided with the parts such as cylinder sleeve, piston, return spring, position limit pin, joint successively; Under original state, the structure of each parts and position should ensure that two joint inside keep intercommunication state.Employing the utility model has the advantages that, is arranged on fuel gas pipeline, when certain difference occurs for the flow of user side on pipeline or pressure, can realize emergency cut-off source of the gas, thus ensure the normal operation of pipe network and the use safety of user.
Description
Technical field
The utility model relates to a kind of limiting pressure closing valve of burning line.
Background technique
The user side of usual domestic gas pipe network may occur, because hose aging, mouse bite or artificial damage etc., causing sebific duct to rupture, and causes gas leakage and the security incident such as to blast.
In addition, along with Living consumption improves constantly, quite a few resident is had to install and use gas water-heater.When water heater is installed, there is some not possess and the installation personnel of qualification is installed when connecing cool and hot water pipe, mistake intake pipe is connected on fuel tube interface.Because gaseous-pressure is less than hydraulic pressure, cause gas meter waterlogged damage.As found not in time, possible gas riser and underground courtyard heating pipe network are all intake, and cause community to be stopped the supple of gas or steam.
For guaranteeing that pipe network facilities normally runs, need the measure taking to protect the pipeline of user side.
Model utility content
The purpose of this utility model is exactly above abnormal in order to prevent user side from occurring, and guarantees that pipe network facilities safety is normal and runs, provide a kind of limiting pressure closing valve.
To achieve these goals, the utility model have employed following technological scheme:
A kind of limiting pressure closing valve, comprises a valve body and symmetrically arranged two groups of cylinder sleeves, piston, return spring, position limit pin, fluid director, joints; Described valve body is tubular structure, and one end of its endoporus is provided with cylinder sleeve, is provided with piston in cylinder sleeve, is provided with return spring between piston shaft and cylinder sleeve, and piston shaft is provided with position limit pin, and cylinder sleeve outer end is connected with joint, is provided with fluid director between cylinder sleeve and joint; The other end and the said structure of valve body inner bore are symmetrical arranged, and are provided with the parts such as cylinder sleeve, piston, return spring, position limit pin, joint successively; Under original state, the structure of each parts and position should ensure that two joint inside keep intercommunication.
This limiting pressure closing valve in use, to connect after gas meter and before stove between valve sebific duct; When there is hose aging, mouse bites and artificial damage etc., and cause sebific duct to rupture, now gas flow explodes, and the pressure of combustion gas self can promote the piston movement of connection rubber tube side, this side fluid director of shutoff, automatically cuts off source of the gas.Effectively can stopping the security incidents such as the blast because revealing generation, domestic gas table also can be protected normally to use, prevent from exceeding because gas flow is excessive table range, bringing the impact failure that gas meter cannot make up.
In addition, when mistake, intake pipe is connected to fuel tube interface, when causing tap water to enter fuel tube, because gaseous-pressure is less than hydraulic pressure, hydraulic pressure will promote the piston movement connecting gas meter side, and this side fluid director of shutoff, cuts off current automatically.Can prevent tap water from entering gas meter, cause gas meter waterlogged damage, also can prevent gas riser and the water inlet of underground courtyard heating pipe network, cause community to be stopped the supple of gas or steam.
In sum, adopt device of the present utility model, be arranged on fuel gas pipeline, when certain difference occurs for the flow of user side on pipeline or pressure, emergency cut-off source of the gas can be realized, thus ensure the normal operation of pipe network and the use safety of user.
Accompanying drawing explanation
Fig. 1 is original state mounted inside structural representation of the present utility model.
Fig. 2 is the decomposition texture schematic diagram of Fig. 1.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail below by specific embodiment:
See Fig. 1, Fig. 2, a kind of limiting pressure closing valve, is made up of a valve body 3 and symmetrically arranged two groups of cylinder sleeves 2, piston 5, return spring 7, position limit pin 6, fluid director 4, joint 1.
As shown in Figure 1 and Figure 2, described valve body 3 is round tube shape structure, and the upper end of its endoporus is threaded with cylinder sleeve 2; Be provided with piston 5 in cylinder sleeve 2, the intermediate clapboard in cylinder sleeve 2 is web pattern, passes intermediate clapboard under the axial direction of piston 5, is provided with return spring 7 on the axle of piston 5 and between the dividing plate of cylinder sleeve 2, is provided with position limit pin 6 is used for fixing return spring 7 in the lower end of the axle of piston 5; Cylinder sleeve 2 outer end is threaded with joint 1, is provided with fluid director 4 between cylinder sleeve 2 and joint 1, and fluid director 4 inside is web pattern;
The lower end of valve body 3 endoporus and the symmetrical setting of said structure, be provided with the parts such as another group cylinder sleeve 2, piston 5, return spring 7, position limit pin 6, fluid director 4, joint 1 successively.
As shown in Figure 1, under original state, the structure of each parts and position should ensure that limiting pressure closing valve inside keeps intercommunication state, and in this example, the intermediate clapboard of fluid director 4 and cylinder sleeve 2 is disc shape, by the gap of return spring 7 control piston 5 and fluid director 4, the circulation of combustion gas can be kept.
Above-described is only a kind of mode of execution of the present utility model.It should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model principle, can also make apparent some conversion or substitute and remodeling, these also should be considered as belonging to protection domain of the present utility model.
Claims (1)
1. a limiting pressure closing valve, is characterized in that: comprise a valve body and symmetrically arranged two groups of cylinder sleeves, piston, return spring, position limit pin, fluid director, joints; Described valve body is tubular structure, and one end of its endoporus is provided with cylinder sleeve, is provided with piston in cylinder sleeve, is provided with return spring between piston shaft and cylinder sleeve, and piston shaft is provided with position limit pin, and cylinder sleeve outer end is connected with joint, is provided with fluid director between cylinder sleeve and joint; The other end and the said structure of valve body inner bore are symmetrical arranged, and are provided with cylinder sleeve, piston, return spring, position limit pin, joint successively; Under original state, the structure of each parts and position should ensure that two joint inside keep intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412938.XU CN204239833U (en) | 2014-07-24 | 2014-07-24 | Limiting pressure closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412938.XU CN204239833U (en) | 2014-07-24 | 2014-07-24 | Limiting pressure closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239833U true CN204239833U (en) | 2015-04-01 |
Family
ID=52769331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412938.XU Active CN204239833U (en) | 2014-07-24 | 2014-07-24 | Limiting pressure closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089057A (en) * | 2014-07-24 | 2014-10-08 | 蚌埠新奥燃气发展有限公司 | Overpressure stop valve |
-
2014
- 2014-07-24 CN CN201420412938.XU patent/CN204239833U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089057A (en) * | 2014-07-24 | 2014-10-08 | 蚌埠新奥燃气发展有限公司 | Overpressure stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |