CN2795590Y - Gas steel cylinder safety valve - Google Patents
Gas steel cylinder safety valve Download PDFInfo
- Publication number
- CN2795590Y CN2795590Y CN 200420095956 CN200420095956U CN2795590Y CN 2795590 Y CN2795590 Y CN 2795590Y CN 200420095956 CN200420095956 CN 200420095956 CN 200420095956 U CN200420095956 U CN 200420095956U CN 2795590 Y CN2795590 Y CN 2795590Y
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- CN
- China
- Prior art keywords
- valve
- piston
- drain tap
- valve body
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a gas steel cylinder safety valve which is composed of a valve body provided with an air inlet and an air outlet, an exhaust valve, a piston, a spring and a valve cap, wherein the air inlet and the air outlet are arranged on the same straight line, and the valve body on the air inlet is provided with an outer screw; the valve body on the air outlet is provided with an inner screw. The exhaust valve is arranged on the valve body, and the starting end of the exhaust valve is directly communicated to the air inlet. The piston can be movably arranged in the exhaust valve to close the starting end of the exhaust valve, and a gap is formed between the inner wall of the exhaust valve and the piston. The valve cap is provided with an exhaust hole and is fixedly connected to the terminal outer wall of the exhaust valve, and the spring is arranged between the piston and the valve cap to press the piston on the starting end of the exhaust valve. The utility model has the advantages of simple structure, low manufacturing cost, easy installation without changing the existing valve of coal gas, and safe and reliable usage, and eliminates the safety hazard effectively.
Description
Technical field
The utility model relates to a kind of gas cylinder safety valve.
Background technique
General family expenses or the gas cylinder modes of using in other occasions that adopt liquid gas storage more, when ambient temperature rises as breaking out of fire, perhaps in can, transportation and occasion such as deposit and collision occurs, when falling, the liquid gas that is stored up in the bottle will gasify fast, cause the steel cylinder internal pressure sharply to increase, bear the limit in case surpass it, will blast, cause life and the property loss that to retrieve, and gas cylinder of the prior art self is similar to the device that gas is dredged and discharged because do not have to install, when meeting with the problems referred to above, can't in time remove the dangerous condition, exist serious potential safety hazard.
Summary of the invention
The purpose of this utility model provides a kind of gas cylinder safety valve that can overcome the deficiency that exists potential safety hazard in the prior art, when the steel cylinder internal pressure is excessive, coal gas can emit by this safety valve, can alleviate the pressure in the steel cylinder, avoids explosive accident to take place.
Technical solution of the present utility model is: it is made up of the valve body that is provided with suction port and air outlet, drain tap, piston, spring and valve cover, wherein suction port and air outlet are located along the same line substantially, the valve body at suction port place is provided with outside thread, and the valve body at place, air outlet is provided with internal thread; Drain tap is arranged on the valve body, and its top directly is communicated with suction port; The mobilizable top that is located in the drain tap and can seals drain tap of piston leaves the slit between the inwall of piston and drain tap; Valve cover is provided with exhaust port and is fastenedly connected on the terminal outer wall of drain tap, and spring is arranged between piston and the valve cover and piston can be compressed on the top that is against drain tap.
During use, the suction port end of valve body is connected on the steel cylinder, connects original gas valve on the valve body of air outlet end.Under the normal condition, in the steel cylinder gas pressure low spring force, the top that piston can the sealing drain tap under the effect of spring; When abnormal conditions occurring, when gas pressure increases to above spring force in the steel cylinder, the piston at sealing drain tap top is backed down, coal gas in the bottle can be discharged from the exhaust port on the valve cover by the slit between piston and the drain tap inwall, reduce the gas pressure in the bottle, avoid the invar pressure of the inside of a bottle to overstep the extreme limit and blast.
As a kind of optimal way, be axially arranged with on the described piston outer wall and the contacted fin of drain tap inwall.Can overflow from drain tap by the interior gas of Easy-used bottle in the space that forms between the fin.
With the contacted described piston end face of spring on be provided with groove, spring is located in the groove.Make things convenient for the location of spring.
The utility model has the advantages that: simple in structure, cheap, do not need to change original gas valve, install easily, safe and reliable, effectively eliminated potential safety hazard.
Description of drawings
Accompanying drawing 2 is the front view of the utility model embodiment's valve cover
Accompanying drawing 3 is the side view of the utility model embodiment's valve cover
Accompanying drawing 4 is the front view of the utility model embodiment's piston
1, valve body, 2, suction port, 3, the air outlet, 4, drain tap, 5, piston, 6, spring, 7, valve cover, 8, exhaust port, 9, fin, 10, groove
Embodiment
Embodiment: as shown in Figure 1, the gas cylinder safety valve is made up of the valve body 1 that is provided with suction port 2 and air outlet 3, drain tap 4, piston 5, spring 6 and valve cover 7, wherein suction port 2 is located along the same line substantially with air outlet 3, the valve body 1 at suction port 2 places is provided with outside thread, can directly be connected on the existing steel cylinder, the valve body 1 at 3 places, air outlet is provided with internal thread, can connect existing gas valve; Drain tap 4 is arranged on the valve body 1, and its top directly is communicated with suction port 2; Piston 5 mobilizable tops that are located in the drain tap 4 and can seal drain tap 4 leave the slit between the inwall of piston 5 and drain tap 4; Valve cover 7 is provided with exhaust port 8 and is connected by screw threads for fastening on the terminal outer wall of drain tap 4, and spring 6 is arranged between piston 5 and the valve cover 7 and piston 5 can be compressed on the top that is against drain tap 4.
The concrete structure of described valve cover 7 is provided with exhaust port 8 on the top of this valve cover 7 shown in accompanying drawing 2 and 3, this exhaust port 8 is through holes, is connected with the exhaust passage of described drain tap 4.
The structure of described piston 5 is axially arranged with on the outer wall of this piston 5 and the contacted fin 9 of described drain tap 4 inwalls as shown in Figure 4.Can overflow from drain tap by the interior gas of Easy-used bottle in the space that forms between the fin 9.With the end face of spring 6 contacted described pistons 5 on be provided with groove 10, spring 6 is located in the groove 10.
Claims (5)
1, a kind of gas cylinder safety valve, it is characterized in that: it is made up of the valve body (1) that is provided with suction port (2) and air outlet (3), drain tap (4), piston (5), spring (6) and valve cover (7), wherein suction port (2) is located along the same line substantially with air outlet (3), the valve body (1) that suction port (2) is located is provided with outside thread, and the valve body (1) that air outlet (3) are located is provided with internal thread; Drain tap (4) is arranged on the valve body (1), and its top directly is communicated with suction port (2); The mobilizable top that is located in the drain tap (4) and can seals drain tap (4) of piston (5) leaves the slit between the inwall of piston (5) and drain tap (4); Valve cover (7) is provided with exhaust port (8) and is fastenedly connected on the terminal outer wall of drain tap (4), and spring (6) is arranged between piston (5) and the valve cover (7) and piston (5) can be compressed on the top that is against drain tap (4).
2, gas cylinder safety valve according to claim 1 is characterized in that: be axially arranged with and the contacted fin of described drain tap (4) inwall (9) on described piston (5) outer wall.
3, gas cylinder safety valve according to claim 1 and 2 is characterized in that: with the end face of the contacted described piston of described spring (6) (5) on be provided with groove (10), described spring (6) is located in the groove (10).
4, gas cylinder safety valve according to claim 3 is characterized in that: described exhaust port (8) is arranged on the top of described valve cover (7), and this exhaust port (8) is a through hole, and the exhaust passage interior with described drain tap (4) is connected.
5, gas cylinder safety valve according to claim 4 is characterized in that: the terminal outer wall of described valve cover (7) and described drain tap (4) is by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095956 CN2795590Y (en) | 2004-12-03 | 2004-12-03 | Gas steel cylinder safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095956 CN2795590Y (en) | 2004-12-03 | 2004-12-03 | Gas steel cylinder safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2795590Y true CN2795590Y (en) | 2006-07-12 |
Family
ID=36813345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420095956 Expired - Fee Related CN2795590Y (en) | 2004-12-03 | 2004-12-03 | Gas steel cylinder safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2795590Y (en) |
-
2004
- 2004-12-03 CN CN 200420095956 patent/CN2795590Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |