CN206637076U - Gas automatic protection mechanism and safety valves for gas - Google Patents
Gas automatic protection mechanism and safety valves for gas Download PDFInfo
- Publication number
- CN206637076U CN206637076U CN201720425125.8U CN201720425125U CN206637076U CN 206637076 U CN206637076 U CN 206637076U CN 201720425125 U CN201720425125 U CN 201720425125U CN 206637076 U CN206637076 U CN 206637076U
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- China
- Prior art keywords
- gas
- sealing gasket
- automatic protection
- protection mechanism
- valve
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- Expired - Fee Related
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- Temperature-Responsive Valves (AREA)
- Mechanically-Actuated Valves (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The utility model discloses a kind of gas automatic protection mechanism; screw thread is offered on the inwall of valve gas outlet; thread plug matching thread is arranged on the middle part of valve; one end of spring is against on thread plug; the other end is fixed on sealing gasket through sealed end; the diameter of sealing gasket is more than the diameter of sealed end, and certain gap is left between sealing gasket and sealed end.Arc thermometal piece with holes is set in gas automatic protection mechanism of the present utility model; sealing gasket is promoted to move by the deformation of arc thermometal in the case where running into naked light or hot environment; so as to realize the function that gas circuit is automatically cut off under hot environment, possess high temperature automatic protection functions.Gas automatic protection mechanism can be made as independent safety component, without dismounting pressure-reducing valve, pressure-reducing valve can be arranged on according to being actually needed outlet side, or be arranged in pressure-reducing valve, mounting means is versatile and flexible；Spring can drive sealing gasket to set back so as to recover gas circuit automatically after closing gas circuit, and apparatus structure is simple.
Description
Technical field
Gas safety device technical field is the utility model is related to, especially a kind of gas pipeline gas automatic protection machine
Structure and safety valves for gas.
Background technology
Liquefied gas, the function of natural gas pressure-reducing valve are that the high pressure air reducing that will pass through is to maintain certain pressure scope
Low-pressure gas, transtracheal are exported to gas-cooker and used.As shown in figure 1, pressure-reducing valve include outlet side 1, inlet end 4 and be arranged on into
The pressure valve 3 on the top of 4 valve body of gas end 7, regulation spring 2 is internally provided with valve body 7, is equipped with regulation spring 2 bottom
Lever 6, the other end connection traffic regulating piston 5 of lever 6.Change lever 6 by changing the telescopic level of regulation spring 2
Position, so as to drive Flow-rate adjustment piston 5 to adjust throughput.Pressure valve 3 is for detecting, showing the air pressure in safety valves for gas.
But when actually using, seepage or the situation of rupture occurs in the follow-up pipeline of pressure-reducing valve, thus combustion is set inside pressure-reducing valve
Gas automatic protective mechanism prevents combustion gas from persistently leaking.A kind of overcurrent protection combustion gas is disclosed in Chinese patent ZL03224276X
Safety valve, by setting sealing-plug, spring, sealing cone etc. in the inlet end endoporus of valve, when throughput is normal in pipeline,
Sealing-plug away from sealing cone, when occur pipeline come off, rupture there is super flow when, utilize gas caused by inlet end and outlet side
Pressure difference drives sealing-plug to block sealing cone, so as to realize the purpose for automatically cutting off source of the gas.But above-mentioned safety valves for gas will safety
Valve is arranged on the inlet end of pressure-reducing valve, and the manufacturing needs to transform structure of relief pressure valve, then needed repairing if there is failure or
Whole pressure-reducing valve is scrapped, and the leakage for follow-up pipeline can not be sensitive.And existing safety valves for gas as occurred when in use
Gas circuit can not be automatically cut off under naked light or high-temperature situation, larger potential safety hazard be present.
Utility model content
The applicant is poor to follow-up pipeline leakage sensitiveness for above-mentioned existing safety valves for gas and can not be to high temperature accidents
The shortcomings of carrying out safeguard protection, there is provided a kind of gas automatic protection mechanism rational in infrastructure and safety valves for gas, running into combustion gas
Gas circuit can be voluntarily cut off when leakage, naked light, high-temperature condition, prevents accident, and it is simple in construction, manufacturing cost is low.
Technical scheme is as follows used by the utility model：
A kind of gas automatic protection mechanism, screw thread is offered on the inwall of valve gas outlet, thread plug matching thread is arranged on
The middle part of valve, one end of spring are against on thread plug, and the other end is fixed on sealing gasket through sealed end, the diameter of sealing gasket
More than the diameter of sealed end, certain gap is left between sealing gasket and sealed end.
Further improvement as above-mentioned technical proposal：
Thermometal piece is provided with the right side of the sealing gasket, the thermometal piece is caught in the annular groove of valve base inner wall
It is interior.
The spring is ladder spring or common spring.
A kind of safety valves for gas using the gas automatic protection mechanism, the gas automatic protection mechanism, which is arranged on, to be subtracted
The outlet side of pressure valve.
Further improvement as above-mentioned technical proposal：
The gas automatic protection mechanism is arranged in outlet side or between outlet side and pipeline.
The beneficial effects of the utility model are as follows：
Arc thermometal piece with holes is set in gas automatic protection mechanism of the present utility model, run into naked light or
Promote sealing gasket to move by the deformation of arc thermometal under hot environment, gas circuit is automatically cut off under hot environment so as to realize
Function, possess high temperature automatic protection functions.Gas automatic protection mechanism of the present utility model can be made as independent peace
Total event, without dismounting pressure-reducing valve, pressure-reducing valve can be set directly at according to being actually needed outlet side, or be set directly at
In pressure-reducing valve, mounting means is versatile and flexible；Gas leakage can be occurred with sensitive perceive in follow-up pipeline, sealing gasket movement is blocked close
For end-blocking so as to automatically cut off gas circuit, spring can drive sealing gasket to set back so as to recover gas circuit automatically after closing gas circuit, fill
Put simple in construction.
Brief description of the drawings
Fig. 1 is existing pressure-reducing valve sectional view.
Fig. 2 is the stereogram of the utility model safety valves for gas.
Fig. 3 is Fig. 2 sectional view.
Fig. 4 is the enlarged drawing in A portions in Fig. 3.
Fig. 5 is the sectional view of leakage guard mode.
Fig. 6 is the sectional view of high temperature protection state.
In figure：1st, outlet side；2nd, spring is adjusted；3rd, pressure valve；4th, inlet end；5th, Flow-rate adjustment piston；6th, lever；7th, valve
Body；8th, sealed end；9th, valve seat；10th, thermometal piece；11st, sealing gasket；12nd, spring；13rd, thread plug；14th, valve；15th, it is annular
Groove.
Embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is illustrated.
As shown in Figures 2 to 4, gas automatic protection mechanism is set directly at decompression by safety valves for gas of the present utility model
The outlet side 1 of valve.Screw thread is offered on the gas outlet inwall of valve 14 of outlet side 1, it is with matching in valve 14
Portion is provided with thread plug 13, and highly sensitive one end of flow spring 12 is against on the thread plug 13 of fixed spring 12, and the other end passes through close
End-blocking 8 is fixed on sealing gasket 11.Spring 12 can be that the ladder spring that left side diameter is more than right side diameter can also be diameter
Identical common spring.The diameter of sealing gasket 11 is more than the diameter of sealed end 8, is left between sealing gasket 11 and sealed end 8 certain
Gap as gas channel.The right side of sealing gasket 11, which is closed on, is provided with thermometal piece 10 with holes, and thermometal piece 10 blocks
In the annular groove 15 for entering the inwall of valve seat 9, thermometal piece 10 is to the arc sphere heaved to the right in normal operation.
During utility model works, as shown in Figure 3, Figure 4, combustion gas is inputted to pressure-reducing valve through pressure-reducing valve inlet end, through decompression
Valve regulation is the low-pressure gas of pressure stability, enters gas automatic protection mechanism after being exported from pressure-reducing valve outlet side 1, when in pipeline
When gas flow is normal, sealing gasket 11 keeps certain gap with sealed end 8, and combustion gas passes sequentially through thermometal piece 10, sealing
Exported after end 8, spring 12 through tracheae to gas-cooker.
As shown in figure 5, when rupture and leakage occurs for fuel gas pipeline or fuel gas pipeline comes off, due to gas pipeline side
Pressure declines, and gas flow rate improves suddenly, and increase is compressed spring 12 to the pressure that combustion gas is acted on sealing gasket 11 suddenly, bullet
Spring 12 drives sealing gasket 11 to be moved to sealed end 8 until sealed end 8 is blocked, so as to realize automatic-sealed.Simultaneously because Gas Pipe
The pressure of road side is much smaller than the pressure of the side of sealed end 8, therefore sealing gasket 11 can be against at sealed end 8 all the time.Closed when artificial
Hold one's breath the distress resolves behind source, acted on sealing gasket 11, sealing gasket 11 leaves sealed end 8 under the effect of spring 12 and returned to originally
Position.
Thermometal piece 10 of the present utility model is made up of two kinds of different metal materials, utilizes thermal expansion coefficient difference
Principle, when naked light occurring or environment temperature reaches the high temperature of setting, as shown in fig. 6, thermometal piece 10 produces deformation,
Become to heave to the left from original heaving to the right, while crush seal pad 11 is moved to sealed end 8 until blocking sealed end
8, so as to cut off gas circuit.When temperature is recovered, thermometal piece 10 reverts to original shape, and sealing gasket 11 acts in spring 12
Under return to origin-location so as to recover gas circuit.
Above description is to explanation of the present utility model, is not the restriction to utility model, without prejudice to the utility model
In the case of spirit, the utility model can make any type of modification.Such as combustion gas of the present utility model can be protected automatically
Shield mechanism is assembled into independent product, is directly installed between the outlet side of pressure-reducing valve and pipeline, without transforming pressure-reducing valve,
Cost is reduced, improves the flexibility used.
Claims (5)
- A kind of 1. gas automatic protection mechanism, it is characterised in that：Valve（14）Screw thread, thread plug are offered on the inwall of gas outlet （13）Matching thread is arranged on valve（14）Middle part, spring（12）One end be against thread plug（13）On, the other end passes through close End-blocking（8）It is fixed on sealing gasket（11）On, sealing gasket（11）Diameter be more than sealed end（8）Diameter, sealing gasket（11）With it is close End-blocking（8）Between leave certain gap.
- 2. according to the gas automatic protection mechanism described in claim 1, it is characterised in that：The sealing gasket（11）Right side set There is thermometal piece（10）, the thermometal piece（10）It is caught in valve seat（9）The annular groove of inwall（15）It is interior.
- 3. according to the gas automatic protection mechanism described in claim 1, it is characterised in that：The spring（12）Be ladder spring or Common spring.
- A kind of 4. gas safe of gas automatic protection mechanism using as any one of claim 1 to claim 3 Valve, it is characterised in that：The gas automatic protection mechanism is arranged on the outlet side of pressure-reducing valve（1）.
- 5. according to the safety valves for gas described in claim 4, it is characterised in that：The gas automatic protection mechanism is arranged on outlet End（1）Interior or outlet side（1）Between pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720425125.8U CN206637076U (en) | 2017-04-21 | 2017-04-21 | Gas automatic protection mechanism and safety valves for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720425125.8U CN206637076U (en) | 2017-04-21 | 2017-04-21 | Gas automatic protection mechanism and safety valves for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206637076U true CN206637076U (en) | 2017-11-14 |
Family
ID=60246303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720425125.8U Expired - Fee Related CN206637076U (en) | 2017-04-21 | 2017-04-21 | Gas automatic protection mechanism and safety valves for gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206637076U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357054A (en) * | 2018-12-25 | 2019-02-19 | 深圳市神特科技有限公司 | Gas self-closing valve |
| CN112034378A (en) * | 2020-09-01 | 2020-12-04 | 河源市省科院研究院 | All-solid-state radio frequency power supply health state assessment device and use method |
-
2017
- 2017-04-21 CN CN201720425125.8U patent/CN206637076U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357054A (en) * | 2018-12-25 | 2019-02-19 | 深圳市神特科技有限公司 | Gas self-closing valve |
| CN112034378A (en) * | 2020-09-01 | 2020-12-04 | 河源市省科院研究院 | All-solid-state radio frequency power supply health state assessment device and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20210421 |