CN2163662Y - Oxyhydrogen flame dry backfire arrester - Google Patents
Oxyhydrogen flame dry backfire arrester Download PDFInfo
- Publication number
- CN2163662Y CN2163662Y CN 93241030 CN93241030U CN2163662Y CN 2163662 Y CN2163662 Y CN 2163662Y CN 93241030 CN93241030 CN 93241030 CN 93241030 U CN93241030 U CN 93241030U CN 2163662 Y CN2163662 Y CN 2163662Y
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- CN
- China
- Prior art keywords
- piston
- flame
- backfire
- fire
- valve rod
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- Expired - Fee Related
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Abstract
The utility model relates to an oxyhydrogen flame dry backfire arrester belonging to a flame arrestor used when flame is used to carry out gas welding and cutting to metal. A bushing (4), a piston (5) and a valve stem (6) are arranged in a fire stop tube; a spherical body (7) can be additionally arranged between the valve stem and an air inlet (8). When the backfire happens during gas welding and cutting, the explosive force generated in the inner cavity of the fire stop tube impels the piston and the valve stem (and the spherical body) to cut off the gas source. The utility model has the advantage of reliable fire stop and anti-backfire and can be used for fire stop and anti-backfire when oxyacetylene flame is used for gas welding and cutting.
Description
The application belongs to the fireproof tempering device that carries out the metal gas welding, uses when cutting with flame, for example oxy-acetylene flame, particularly oxyhydrogen flame.
Utilize flame to carry out metal gas welding, when cutting, when flame burning speed during greater than gas flow rate, flame flows back to gas source and promptly can blast, and makes operation dangerous.
Generally used a kind of dry type backfire controller to flow back to gas source when at present, carrying out metal gas welding, cutting to stop flame with oxy-acetylene flame.This backfire controller passes fire-stopping pipe from exocoel when flame flows backwards and promotes the valve closing source of the gas with after-explosion.
The hydro-electrolytic hydroxide welding device that domestic and international large-scale popularization adopts because the burning velocity of oxyhydrogen flame is actually 3～5 times of oxy-acetylene flame, is suitable for the dry type backfire controller that oxy-acetylene flame is used, and can not stop the refluence of oxyhydrogen flame reliably and end fiery.
The application's purpose provides a kind of oxyhydrogen flame dry type backfire controller, thereby it can stop oxyhydrogen flame to flow back to gas source assurance handling safety reliably.
The application's backfire controller is to install a sleeve pipe additional in the fire-stopping pipe of existing dry type backfire controller, and piston and valve rod are arranged in the sleeve pipe, and sleeve pipe has the spacing shelves of piston.Suction nozzle has the side venthole.When tempering took place, the explosive force that produces at the fire-stopping pipe inner chamber promoted piston, valve rod, thereby last valve rod is closed air inlet and blocked gas return path.Because flame is at first to enter inner chamber and directly in inner chamber blast, add fire-stopping pipe again and have the function that reduces burning velocity and end fire, but also back-fire relief several seconds of common fire-stopping pipe, during this period in, explosive force is enough to make valve rod with inlet close.
Close air inlet with valve rod, bring difficulty in the endoporus processing of position, side venthole place correspondence can for suction nozzle, for ease of the processing of suction nozzle, can increase a spheroid between air inlet and valve rod is ball valve, stops gas backstreaming to gas source by spheroid.Be that line contacts because of spheroid and air inlet simultaneously, result of use is better.
Said piston and valve rod can be the integral member that combines, but this can bring difficulty to processing, and therefore discrete component independently separately preferably then is assembled into together.
In order to alleviate the weight of piston, piston can be processed lightening hole.
For guaranteeing good seal, piston, sleeve pipe, spheroid etc. all should have higher processing precision.
This backfire controller also can be used for oxy-acetylene flame certainly and prevents tempering.
Because the application's backfire controller is opposite with existing backfire controller gas circuit, when tempering takes place, can utilize the fire-stopping pipe back-fire relief several seconds, flame directly promotes the valve closing source of the gas in the inner chamber blast, thereby can prevent fires reliably and end fire.
Accompanying drawing is the structure cutaway view of oxyhydrogen flame dry type backfire controller.
Embodiment: oxyhydrogen flame dry type backfire controller, comprise gas outlet 1, the fire-stopping pipe 2 of pottery or powder metallurgy pressing, shell 3, the suction nozzle that air inlet 8 and side venthole 9 are arranged, copper sleeve 4 is arranged in fire-stopping pipe, work in copper plug 5, this piston has lightening hole, promote the copper valve rod 6 of piston, sleeve pipe 4 has spacing shelves 10, one steel ball 7 is arranged between air inlet 8 and the valve rod 6, it is contained in the endoporus of side venthole 9 correspondences of suction nozzle, want the gas circuit between energy gas outlet, closed side 9 and the air inlet 8, when this spheroid is closed air inlet 8, the distance of piston 5 and spacing shelves 10 should with the equal diameters of spheroid 7, piston, valve rod, the center line of air inlet passes through ball centre.
When from the hydrogen and oxygen gas mixture of gas source when air inlet 8 is pushed spheroid 7 open, sphere push valve rod 6, piston 5, gas enters exocoel between fire-stopping pipe 2 and the shell 3 from side venthole 9, passes fire-stopping pipe 2 then and enters solder cutting gun by gas outlet 1 at last and light work.In a single day in when, tempering taking place in the course of work when, flame 1 at first enters the inner chamber of fire-stopping pipe 2 and makes and pass the hydrogen and oxygen gas mixture burning that fire-stopping pipe enters inner chamber and set off an explosion through the gas outlet, impact generated by explosion is tried hard to recommend moving piston 5, valve rod 6 and spheroid 7, spheroid is sealed side venthole 9 and is promptly closed air inlet 8 with the gas circuit of air inlet 8, thereby the cut-out gas source realizes ending the function that the fire fire prevention refluxes.
Claims (4)
1, oxyhydrogen flame dry type backfire controller, belong to the fireproof tempering device that carries out the metal gas welding, uses when cutting with flame, comprise that gas outlet (1), fire-stopping pipe (2), shell (3), suction nozzle have air inlet (8), it is characterized in that suction nozzle also has side venthole (9), sleeve pipe (4) is arranged in the fire-stopping pipe (2), piston (5) is arranged in the sleeve pipe (4), promote the valve rod (6) of piston (5), sleeve pipe (4) has the spacing shelves of piston (10).
2,, it is characterized in that between air inlet (8) and the valve rod (6) spheroid (7) being arranged according to the said backfire controller of claim 1.
3, according to claim 1 or 2 said backfire controllers, it is characterized in that piston (5) and valve rod (6) can be discrete components independently separately, also can be an integral member that combines.
4,, it is characterized in that piston (5) has lightening hole according to the said backfire controller of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93241030 CN2163662Y (en) | 1993-10-07 | 1993-10-07 | Oxyhydrogen flame dry backfire arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93241030 CN2163662Y (en) | 1993-10-07 | 1993-10-07 | Oxyhydrogen flame dry backfire arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2163662Y true CN2163662Y (en) | 1994-05-04 |
Family
ID=33815115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93241030 Expired - Fee Related CN2163662Y (en) | 1993-10-07 | 1993-10-07 | Oxyhydrogen flame dry backfire arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2163662Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979919A (en) * | 2010-10-15 | 2011-02-23 | 陈远平 | Anti-oxyhydrogen flame tempering dry optical control device |
| CN102410554A (en) * | 2011-11-07 | 2012-04-11 | 长沙锅炉厂有限责任公司 | Anti-flame device for boiler |
| CN104791133A (en) * | 2015-03-17 | 2015-07-22 | 南京理工大学 | Automatic anti-backfire device for pasty propellant rocket motor |
| CN106139458A (en) * | 2015-03-27 | 2016-11-23 | 石祥 | A kind of hydrogen and oxygen gas mixture spark arrester |
| CN106969267A (en) * | 2017-04-15 | 2017-07-21 | 广东蓝新氢能源科技有限公司 | A kind of efficient fire device |
| CN111888693A (en) * | 2020-06-08 | 2020-11-06 | 汪洵 | High pipeline fire prevention ware of security |
| CN112657094A (en) * | 2021-01-21 | 2021-04-16 | 郑传英 | Flame arrester for gas pipeline |
-
1993
- 1993-10-07 CN CN 93241030 patent/CN2163662Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979919A (en) * | 2010-10-15 | 2011-02-23 | 陈远平 | Anti-oxyhydrogen flame tempering dry optical control device |
| CN101979919B (en) * | 2010-10-15 | 2012-09-26 | 汕头市信一塑机制造有限公司 | Anti-oxyhydrogen flame tempering dry optical control device |
| CN102410554A (en) * | 2011-11-07 | 2012-04-11 | 长沙锅炉厂有限责任公司 | Anti-flame device for boiler |
| CN104791133A (en) * | 2015-03-17 | 2015-07-22 | 南京理工大学 | Automatic anti-backfire device for pasty propellant rocket motor |
| CN104791133B (en) * | 2015-03-17 | 2016-07-06 | 南京理工大学 | A kind of automatic fireproof tempering device being applied to Pasty Propellant Rocket Engine |
| CN106139458A (en) * | 2015-03-27 | 2016-11-23 | 石祥 | A kind of hydrogen and oxygen gas mixture spark arrester |
| CN106969267A (en) * | 2017-04-15 | 2017-07-21 | 广东蓝新氢能源科技有限公司 | A kind of efficient fire device |
| CN111888693A (en) * | 2020-06-08 | 2020-11-06 | 汪洵 | High pipeline fire prevention ware of security |
| CN111888693B (en) * | 2020-06-08 | 2021-09-07 | 蒯念生 | High pipeline fire prevention ware of security |
| CN112657094A (en) * | 2021-01-21 | 2021-04-16 | 郑传英 | Flame arrester for gas pipeline |
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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 |