CN2307971Y - Pneumatic safety valve with needle stab film - Google Patents
Pneumatic safety valve with needle stab film Download PDFInfo
- Publication number
- CN2307971Y CN2307971Y CN 97219901 CN97219901U CN2307971Y CN 2307971 Y CN2307971 Y CN 2307971Y CN 97219901 CN97219901 CN 97219901 CN 97219901 U CN97219901 U CN 97219901U CN 2307971 Y CN2307971 Y CN 2307971Y
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- CN
- China
- Prior art keywords
- film
- air pressure
- instrument
- pneumatic
- safety valve
- 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 discloses a pneumatic safety valve with a needle stab film, which belongs to the control field of pneumatic machinery. The pneumatic safety valve of rapid air discharge adopts the structure of a pneumatic film 6 and a needle stab 7. When the air pressure in an instrument exceeds the given pre-pressure, the spherical surface of the air pressure film protruded to the needle stab direction is pricked by the needle stab and the gas in the instrument is rapidly released in order to prevent the instrument from being damaged. The fatal defect that when used in the space or the vacuum, the mechanical structure valve in the spring type is easy to cause accidents and even leads explosion is overcome.
Description
The utility model belongs to a kind of pneumatic safety valve in the what pneumatic machinery control field.
Before the utility model, employed safety valve in pneumatic machinery control field, majority all are spring mechanical structure safety valves.The prior art the most approaching with the utility model is the normally used Direct spring loaded safety valve that can see everywhere, as shown in Figure 1: be made up of valve body 1, valve rod 2, precompression spring 3, gland 4.The major defect that its exists is: when the atmospheric pressure that is subjected to when valve surpasses pre-pressure of the spring, valve can only be to open at leisure, outgassing rate is along with valve is opened increase greatly gradually, this uses in space or vacuum environment, because outgassing rate has an accident instrument too slowly and easily, even cause the instrument blast easily.
In order to overcome above-mentioned shortcoming, the purpose of this utility model is: develop a kind of pneumatic quick Gassy Relief Valve, be applied on the instrument that uses in space or the vacuum environment, when the air pressure in the instrument surpasses given precompression, this quick Gassy Relief Valve can discharge gas rapidly, reduces the air pressure in the instrument, thereby guarantee the safe handling of instrument, be not damaged.
Detailed content of the present utility model is made up of valve body 5, air pressure film 6, pricker 7, gland 8, acupuncture seat 9 as shown in Figure 2.
Principle explanation: when the gas pressure in the instrument increases; air pressure film 6 is subjected to gas pressure and bloats to the direction of pricker 7; when gas pressure reaches given precompression; air pressure film 6 just contacts with the tip of pricker 7 to the sphere that the direction of pricker 7 bloats; but can not be punctured; have only when the pressure of gas surpasses given precompression; the sphere that air pressure film 6 bloats together to the side of pricker 7; cross the needle point of pricker 7; air pressure film 6 is broken by acupuncture; gas in the instrument discharges rapidly immediately, thereby reduces the air pressure in the instrument, and the protection instrument is unlikely impaired.
Good effect: when the air pressure in the instrument surpassed given precompression, pricker 7 punctured air pressure film 6, and the gas in the instrument discharges rapidly immediately, reduces the pressure in the instrument, and instrument is unlikely is damaged in protection.
Description of drawings: Fig. 1 is the structural representation of prior art, and Fig. 2 is a structural representation of the present utility model, and Figure of abstract adopts Fig. 2.
Most preferred embodiment: the material of air pressure film 6 adopts natural rubber, and the material of pricker 7 adopts stainless steel, and the material of valve body 5 and valve gap 8 adopts aluminium copper.
Claims (1)
1, pneumatic acupuncture film safety valve, form by valve body, gland, it is characterized in that air pressure film 6 is installed on the ventilating hole of valve body 5, thorn needle stand 9 links to each other with valve body 5, the needle point of pricker 7 is the radius of curvature that air pressure film 6 is subjected to the caused air pressure film 6 of gas pressure to the distance of air pressure film 6, uses scyewed joint between gland 8 and the valve body 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219901 CN2307971Y (en) | 1997-07-24 | 1997-07-24 | Pneumatic safety valve with needle stab film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219901 CN2307971Y (en) | 1997-07-24 | 1997-07-24 | Pneumatic safety valve with needle stab film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2307971Y true CN2307971Y (en) | 1999-02-17 |
Family
ID=33935750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97219901 Expired - Fee Related CN2307971Y (en) | 1997-07-24 | 1997-07-24 | Pneumatic safety valve with needle stab film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2307971Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864138A (en) * | 2015-05-25 | 2015-08-26 | 邬子健 | Safe connector for natural gas bottle |
| CN105651453A (en) * | 2014-12-03 | 2016-06-08 | 武汉航空仪表有限责任公司 | Mini explosion safety device |
| CN105697837A (en) * | 2016-04-20 | 2016-06-22 | 西安新竹防灾救生设备有限公司 | Drive-gas releasing device |
| CN110203080A (en) * | 2019-05-29 | 2019-09-06 | 莫海路 | A kind of multiphase can increase journey energy-storage system and with its vehicle and can source base station |
| CN111237581A (en) * | 2020-01-09 | 2020-06-05 | 中国安全生产科学研究院 | Emergency disposal device for oil pipeline leakage |
-
1997
- 1997-07-24 CN CN 97219901 patent/CN2307971Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651453A (en) * | 2014-12-03 | 2016-06-08 | 武汉航空仪表有限责任公司 | Mini explosion safety device |
| CN104864138A (en) * | 2015-05-25 | 2015-08-26 | 邬子健 | Safe connector for natural gas bottle |
| CN105697837A (en) * | 2016-04-20 | 2016-06-22 | 西安新竹防灾救生设备有限公司 | Drive-gas releasing device |
| CN110203080A (en) * | 2019-05-29 | 2019-09-06 | 莫海路 | A kind of multiphase can increase journey energy-storage system and with its vehicle and can source base station |
| CN110203080B (en) * | 2019-05-29 | 2022-09-20 | 莫海路 | Multiphase range-extending energy storage system, vehicle with same and energy base station |
| CN111237581A (en) * | 2020-01-09 | 2020-06-05 | 中国安全生产科学研究院 | Emergency disposal device for oil pipeline leakage |
| CN111237581B (en) * | 2020-01-09 | 2021-12-21 | 中国安全生产科学研究院 | Emergency disposal device for oil pipeline leakage |
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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 |