CN204114274U - Fire-retardant control valve - Google Patents
Fire-retardant control valve Download PDFInfo
- Publication number
- CN204114274U CN204114274U CN201420489162.1U CN201420489162U CN204114274U CN 204114274 U CN204114274 U CN 204114274U CN 201420489162 U CN201420489162 U CN 201420489162U CN 204114274 U CN204114274 U CN 204114274U
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- chamber
- pressure cap
- plug screw
- low melting
- fire
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Abstract
The fire-retardant control valve of the utility model, comprising: valve body, valve body is provided with and opens chamber, and the upper end of opening chamber and valve body connects; Pressure cap, pressure cap is arranged on to be opened in chamber, is provided with through pressure cap chamber in pressure cap; Epicoele, epicoele is arranged on the top of pressure cap, and epicoele is communicated with pressure cap chamber; The upper end of epicoele and pressure cap connects; Plug screw, plug screw is arranged in epicoele, is provided with through plug screw chamber in plug screw; Low melting alloy chamber, low melting alloy chamber is arranged on the top of plug screw, and low melting alloy chamber is communicated with plug screw chamber; Low melting alloy is provided with in low melting alloy chamber; Valve rod, valve rod is arranged on to be opened in chamber, pressure cap chamber, plug screw chamber and low melting alloy chamber; The top of valve rod is provided with nut, between the bottom and pressure cap of valve rod, be provided with spring; Sealing, Sealing is arranged on the end of the bottom of valve rod.The utility model is when there is burning in automobile or temperature is too high, and valve cuts off rock gas gas circuit automatically, prevents from burning aggravation surprisingly occurs and avoids.
Description
Technical field
The utility model relates to gas-fueled vehicles valve field, particularly relates to a kind of fire-retardant control valve reaching temperature and automatically close.
Background technique
In short supply along with petroleum resources, rock gas is widely used as emerging energy, LNG (Liquefied Natural Gas, LNG Liquefied natural gas) application expand gradually, along with rock gas is as a large amount of uses of automotive fuel, rock gas in use security requirement also improves gradually.The event that burning occurs for current automobile is of common occurrence, and rock gas is as the automobile of fuel when burning occurs, and rock gas is known from experience as combustible gas allowing burning aggravation, adds accident risk.Present Domestic market is stopped this type of situation without respective valves and is occurred.
Model utility content
The purpose of this utility model is that providing a kind of realizes automatic closedown, safe and reliable fire-retardant control valve.
For solving the problems of the technologies described above, the fire-retardant control valve of the utility model, comprising: valve body, and described valve body is provided with and opens chamber, the upper end of described unlatching chamber and described valve body connects, and forms opening; Suction port and air outlet, described suction port and described air outlet are separately positioned on the both sides on described valve body, and described suction port and described air outlet are communicated with described unlatching chamber respectively; Pressure cap, described pressure cap is arranged in described unlatching chamber, is provided with through pressure cap chamber in described pressure cap; Epicoele, described epicoele is arranged on the top of described pressure cap, and described epicoele is communicated with described pressure cap chamber; The upper end of described epicoele and described pressure cap connects, and forms upper shed; Plug screw, described plug screw is arranged in described epicoele, is provided with through plug screw chamber in described plug screw; Low melting alloy chamber, described low melting alloy chamber is arranged on the top of described plug screw, and described low melting alloy chamber is communicated with described plug screw chamber; Low melting alloy is provided with in described low melting alloy chamber; Valve rod, described valve rod is arranged in described unlatching chamber, described pressure cap chamber, described plug screw chamber and described low melting alloy chamber; The top of described valve rod is provided with nut, between the bottom of described valve rod and described pressure cap, be provided with spring; Sealing, described Sealing is arranged on the end of the bottom of described valve rod.
Described pressure cap chamber is for connecing stepped shaft.Described pressure cap chamber is divided into three sections, and diameter increases successively from top to bottom.
Described valve rod comprises the holding part, linkage section and the active section that connect successively; Wherein said active section is arranged in described unlatching chamber and described pressure cap chamber, and the mating shapes in shape and described pressure cap chamber.
In described pressure cap, be provided with closed hole, described closed hole is arranged between described pressure cap chamber and described epicoele.O-ring seals is provided with in described closed hole.
Seal ring is provided with between described pressure cap and described valve body.
Pod apertures is provided with in bottom, described low melting alloy chamber.
Be threaded connection between described valve body, described pressure cap and described plug screw.
The fire-retardant control valve of the utility model is when there is burning in automobile or temperature is too high, and valve cuts off rock gas gas circuit automatically, prevents from burning aggravation surprisingly occurs and avoids, and improves the Security of LNG as automotive fuel.
Accompanying drawing explanation
Fig. 1 is the fire-retardant control valve sectional view of the utility model;
Fig. 2 is the utility model fire-retardant control valve valve body sectional view;
Fig. 3 is the utility model fire-retardant control valve pressure cap sectional view;
Fig. 4 is the utility model fire-retardant control valve plug screw sectional view;
Fig. 5 is the utility model fire-retardant control valve valve rod sectional view.
Description of reference numerals in the fire-retardant control valve accompanying drawing of the utility model:
1-valve body 2-seal ring 3-pressure cap
4-O shape seal ring 5-plug screw 6-low melting alloy
7-nut 8-valve rod 9-spring
10-Sealing 11-opening 12-suction port
14-pressure cap chamber, 13-air outlet 15-epicoele
18-low melting alloy chamber, 16-upper shed 17-plug screw chamber
19-first pressure cap chamber 20-second pressure cap chamber 21-the 3rd pressure cap chamber
22-holding part 23-linkage section 24-active section
25-closed hole 26-pod apertures 27-opens chamber
28-step
Embodiment
Below in conjunction with accompanying drawing, the fire-retardant control valve of the utility model is described in further detail.
As shown in Fig. 1 ~ Fig. 5, the fire-retardant control valve of the utility model, comprising: valve body 1, valve body 1 is provided with and opens chamber 27, opens chamber 27 and connects with the upper end of valve body 1, form opening 11.Meanwhile, the both sides on valve body 1 are respectively equipped with and open the suction port 12 and air outlet 13 that chamber 27 is communicated with.
Pressure cap 3 is arranged on to be opened in chamber 27, and is attached thereto by screw thread.Pressure cap 3 inside is provided with through pressure cap chamber 14 and epicoele 15.Pressure cap chamber 14 by being communicated with successively, diameter becomes the first large pressure cap chamber 20, pressure cap chamber 19, second successively and the 3rd pressure cap chamber 21 forms.First pressure cap chamber 19 is communicated with epicoele 15, and epicoele 15 connects with the upper end of pressure cap 3, forms upper shed 16.
Plug screw 5 is arranged in epicoele 15, and is attached thereto by screw thread.Through plug screw chamber 17 is provided with in plug screw 5.Low melting alloy chamber 18 is arranged on the top of plug screw 5, and low melting alloy chamber 18 is communicated with plug screw chamber 17; Be provided with low melting alloy 6 within it.
Valve rod 8 is arranged on to be opened in chamber 27, pressure cap chamber 14, plug screw chamber 17 and low melting alloy chamber 18.The holding part 22 on its top is fixed by nut 7, and the active section 24 of its underpart is arranged on to be opened in chamber 27 and pressure cap chamber 14.Spring 9 is provided with between the step 28 and pressure cap 3 of valve rod 8 active section 24.
When ambient temperature reaches fusing point (being generally 110 DEG C ± 5 DEG C) of low melting alloy 6, low melting alloy 6 melts, and the low melting alloy 6 of thawing flows out from the pod apertures 26 of bottom, low melting alloy chamber 18.Owing to having lacked the support of low melting alloy 6, valve rod 8 disequilibrium.Valve rod 8, under the effect of spring 9 pulling force, valve rod 8 is carried, and the Sealing 10 of band ovable valve stem 8 active section 24 stretches in the 3rd pressure cap chamber 21, cuts off gas circuit, reaches the object of closing gas circuit.Meanwhile, the body of valve rod 8 active section 24 also stretches in the second pressure cap chamber 20, plays the object preventing from revealing, to improve Security.
And be provided with seal ring 2 between pressure cap 3 and valve body 1, be provided with O-ring seals 4 in closed hole 25, O-ring seals 4 is set in the outside of valve rod 8 linkage section 23, in order to the effect of further enhanced leaktightness simultaneously.
The fire-retardant control valve of the utility model is when there is burning in automobile or temperature is too high, and valve cuts off rock gas gas circuit automatically, prevents from burning aggravation surprisingly occurs and avoids, and improves the Security of LNG as automotive fuel.
Below the preferred embodiment that the utility model is created is illustrated, but the utility model is created and is not limited to embodiment, those of ordinary skill in the art also can make all equivalent modification or replacement under the prerequisite without prejudice to the utility model creative spirit, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (9)
1. fire-retardant control valve, is characterized in that, comprising:
Valve body, described valve body is provided with and opens chamber, the upper end of described unlatching chamber and described valve body connects, and forms opening;
Suction port and air outlet, described suction port and described air outlet are separately positioned on the both sides on described valve body, and described suction port and described air outlet are communicated with described unlatching chamber respectively;
Pressure cap, described pressure cap is arranged in described unlatching chamber, is provided with through pressure cap chamber in described pressure cap;
Epicoele, described epicoele is arranged on the top of described pressure cap, and described epicoele is communicated with described pressure cap chamber; The upper end of described epicoele and described pressure cap connects, and forms upper shed;
Plug screw, described plug screw is arranged in described epicoele, is provided with through plug screw chamber in described plug screw;
Low melting alloy chamber, described low melting alloy chamber is arranged on the top of described plug screw, and described low melting alloy chamber is communicated with described plug screw chamber; Low melting alloy is provided with in described low melting alloy chamber;
Valve rod, described valve rod is arranged in described unlatching chamber, described pressure cap chamber, described plug screw chamber and described low melting alloy chamber; The top of described valve rod is provided with nut, between the bottom of described valve rod and described pressure cap, be provided with spring;
Sealing, described Sealing is arranged on the end of the bottom of described valve rod.
2. fire-retardant control valve according to claim 1, is characterized in that, described pressure cap chamber is for connecing stepped shaft.
3. fire-retardant control valve according to claim 2, is characterized in that, described pressure cap chamber is divided into three sections, and diameter increases successively from top to bottom.
4. fire-retardant control valve according to claim 3, is characterized in that, described valve rod comprises the holding part, linkage section and the active section that connect successively; Wherein
Described active section is arranged in described unlatching chamber and described pressure cap chamber, and the mating shapes in shape and described pressure cap chamber.
5. the fire-retardant control valve according to claim 1 or 4, is characterized in that, in described pressure cap, be provided with closed hole, and described closed hole is arranged between described pressure cap chamber and described epicoele.
6. fire-retardant control valve according to claim 5, is characterized in that, in described closed hole, be provided with O-ring seals.
7. fire-retardant control valve according to claim 1, is characterized in that, between described pressure cap and described valve body, be provided with seal ring.
8. fire-retardant control valve according to claim 1, is characterized in that, is provided with pod apertures in bottom, described low melting alloy chamber.
9. fire-retardant control valve according to claim 1, is characterized in that, is threaded connection between described valve body, described pressure cap and described plug screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489162.1U CN204114274U (en) | 2014-08-28 | 2014-08-28 | Fire-retardant control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489162.1U CN204114274U (en) | 2014-08-28 | 2014-08-28 | Fire-retardant control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114274U true CN204114274U (en) | 2015-01-21 |
Family
ID=52331586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420489162.1U Active CN204114274U (en) | 2014-08-28 | 2014-08-28 | Fire-retardant control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953716A (en) * | 2018-07-06 | 2018-12-07 | 上海市特种设备监督检验技术研究院 | A kind of preparation method of easy fusing alloy plug |
| CN112696514A (en) * | 2020-12-25 | 2021-04-23 | 上海百图低温阀门有限公司 | LNG (liquefied Natural gas) heat-insulating gas cylinder pressurization and pressure regulation valve for vehicle |
-
2014
- 2014-08-28 CN CN201420489162.1U patent/CN204114274U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953716A (en) * | 2018-07-06 | 2018-12-07 | 上海市特种设备监督检验技术研究院 | A kind of preparation method of easy fusing alloy plug |
| CN112696514A (en) * | 2020-12-25 | 2021-04-23 | 上海百图低温阀门有限公司 | LNG (liquefied Natural gas) heat-insulating gas cylinder pressurization and pressure regulation valve for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |