CN102080825B - Back-fire arrestor - Google Patents
Back-fire arrestor Download PDFInfo
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- CN102080825B CN102080825B CN200910154320A CN200910154320A CN102080825B CN 102080825 B CN102080825 B CN 102080825B CN 200910154320 A CN200910154320 A CN 200910154320A CN 200910154320 A CN200910154320 A CN 200910154320A CN 102080825 B CN102080825 B CN 102080825B
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- fire
- valve
- main body
- stopping pipe
- gas
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Abstract
The invention discloses a back-fire arrestor which comprises a main body, an input joint, a one-way valve and an output joint, wherein the input joint is connected with the main body; the one-way valve is installed in the cavity of the main body; a spring seat is arranged in the cavity of the main body; the output joint is connected with the end part of the spring seat; one end of a valve spring is sleeved on the head part of the spring seat, and the other end of the valve spring abuts against a valve core; and a potted component and a fire-stopping pipe which is arranged above the spring seat are lined between the valve core and the input joint. The back-fire arrestor is characterized in that the potted component is a valve pad made of a fluororubber material; the fire-stopping pipe is prepared by sintering 80-100 mesh stainless steel particles; in a gas through return passage, gas enters from the middle passage, and the gas is discharged from the edge passages; when a gas negative pressure generated by backfire flame is higher than a forward normal pressure, the one-way valve of the back-fire arrestor is quickly closed, thereby effectively cutting a gas source off; because the one-way control valve takes fluororubber as a sealing material, so that the closing property and service life of the one-way valve are greatly improved; and the backfire ratio is effectively improved, simultaneously, the safe property is also improved, and the service life of the arrestor is prolonged.
Description
Technical field
The present invention relates to a kind of flash-back arrestor, relate in particular to the anti-backfire device that is used on the gas welding cut bit.
Background technology
The flash-back arrestor (also claiming flashback arrester) that uses in the market has two kinds, i.e. dry flashback arrestor and water-sealing back fire arrester.These two kinds of flash-back arrestor operation principles and structure are different: water-sealing back fire arrester is when operate as normal, and acetylene gets into from bottom air inlet, backs down check-valves, gets into weldering (cutting) torch from the gas outlet through cleaner.When flashing back, flame is tank switching from the gas outlet, backs down rubber membrane; Combustion flame is escaped into the air from gas vent, and combustion flame pressure is closed check-valves on the other hand, the cutting gas circuit; Make flame can't get into the acetylene gas generating means; In addition, the water in the cylindrical shell has also been blocked the path of flame, plays the effect of insurance.Its major defect is the effect that the bigger air-flow of combustion pressure is not had prevention, and then can not effectively stop tempering, and therefore, such flash-back arrestor seldom has manufacturer producing at present; And dry flashback arrestor is when operate as normal, and acetylene gas gets into from bottom air inlet, flows into less explosion chamber, gets into weldering (cutting) torch by the gas outlet, and when flashing back, explosion-proof rubber membrane moment is broken through, and burning gases are dispersed in the air very soon.Its major defect is that the flash-back arrestor internal structure of the type is a through type, and can not effectively block source of the gas after flashing back, and then personal safety has been caused certain threat and hidden danger.Given this, await the structure of this dry flashback arrestor is improved.
Summary of the invention
Technical problem to be solved by this invention provides a kind of flash-back arrestor, effectively improves the tempering rate that prevents, has also improved security performance simultaneously, has increased the life-span of preventer.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of flash-back arrestor; Comprise main body, the input adapter that is connected with main body and out splice going splice, be installed in the check valve in the body cavity; Check valve is made up of valve core, valve spring, spring base; Spring base is arranged in the body cavity, and an end of valve spring is nested with on the spring base head, and the other end of valve spring is connected with the valve core is inconsistent; Be lined with potted component between valve core and the input adapter and be positioned at the fire-stopping pipe above the spring base, it is characterized in that: the valve pad that described potted component adopts the fluorubber material to process; What described fire-stopping pipe adopted is the fire-stopping pipe that 80-120 purpose stainless steel particle sintering is processed; Gas flows to the outer rim passage that cavity forms between main body and the fire-stopping pipe through the tube wall of fire-stopping pipe; The outer rim passage is communicated with out splice going splice through the sulculus of spring base, the logical loop of the gas that air inlet in the middle of forming, wing are given vent to anger.
As improvement, described fire-stopping pipe right-hand member seals with Hpb59-1 copper, and the flow design of fire-stopping pipe is 15m
3/ h.
At last, described main body is processed into by H62 copper.
Compared with prior art, the invention has the advantages that:
1. can stop the flame that strile-backs through welding (cutting) torch and flash-back arrestor entering oxygen or acetylene gas flexible pipe until getting into acetylene gas bottle;
2. the gas negative pressure that produces when the flame that strile-backs is higher than the forward normal pressure, and the flash-back arrestor check valve is closed rapidly, effectively cuts off source of the gas; Utilize fire-stopping pipe the flame blocking-up of strile-bacing;
3. one-way control valve adopts fluorubber as encapsulant, and this material heat-resistant, wear-resistant is difficult for being broken through and damaging, and closed check valve performance and service life are improved greatly;
4. because of fire-stopping pipe one end adopts the sealing of Hpb59-1 copper, so can further improve the security performance of this flash-back arrestor.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the spring base structure cutaway view of Fig. 1;
Fig. 3 is the valve mat structure cutaway view of Fig. 1;
Fig. 4 is the fire-stopping pipe structure cutaway view of Fig. 1.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Shown in Fig. 1-4: a kind of flash-back arrestor, comprise main body 1, main body 1 is processed into by H62 copper; Be threaded in input adapter 9 and out splice going splice 2 on the main body 1, in be lined with O RunddichtringO 6, be installed in the check valve in main body 1 cavity; Check valve is made up of valve core 8, valve spring 5, spring base 3, and spring base 3 is arranged in main body 1 cavity, and an end of valve spring 5 entangles firm on spring base 3 heads; The other end of valve spring 5 and 8 inconsistent connections of valve core; Fire-stopping pipe 4 is positioned at above the spring base 3, and key point is: what fire-stopping pipe 4 adopted is the fire-stopping pipe that 80-120 order stainless steel particle sintering is processed, the fire-stopping pipe 4 that present embodiment adopts 100 order stainless steel particle sintering to process; Gas flows to the outer rim path 10 through the tube wall of fire-stopping pipe 4; The outer rim path 10 is formed by cavity between main body 1 and the fire-stopping pipe 4, and the outer rim path 10 is communicated with out splice going splice 2 through the sulculus of spring base 3, the logical loop of the gas that air inlet in the middle of forming, wing are given vent to anger; Fire-stopping pipe 4 other end right-hand members seal with Hpb59-1 copper, and the flow design of fire-stopping pipe 4 is 15m
3/ h adopts 80-120 order stainless steel particle sintering to process, and improving the security performance of flash-back arrestor, and can effectively stop the generation of tempering accident; The potted component that is lined with between valve core 8 and the input adapter 9 adopts the valve pad of processing with the fluorubber material 7, this material heat-resistant, wear-resistant, and difficult quilt breaks through and damages, and closed check valve performance and service life are all improved greatly.
Its operation principle is following: after gas inserted flash-back arrestor, at first through check valve, unidirectional force was that 0.0005Mpa gets into the fire-stopping pipe endoporus; Flow to the outer rim path 10 of gas through the tube wall of fire-stopping pipe 4; Get into the circulation sulculus of spring base 3 and then flow to outlet, be connected to the cutting tool of using gases in the outlet, when the cutting tool tempering; Cause gas circuit band fire negative pressure, the outlet of reverse flow to flash-back arrestor; Because of the flow design of fire-stopping pipe 4 is 15m
3/ h adopts 80-120 order stainless steel particle sintering to process, and fire-stopping pipe 4 can only make the air communication mistake; And naked light is passed through; So the fire of the band during tempering negative pressure is stopped in fire-stopping pipe 4 ends, because of the effect of check valve, increasing of negative pressure impelled closed check valve during owing to tempering in addition; Stop the gas forward to flow into, and then stoped the generation of tempering incident.
Claims (3)
1. flash-back arrestor; Comprise main body, the input adapter that is connected with main body and out splice going splice, be installed in the check valve in the body cavity; Check valve is made up of valve core, valve spring, spring base, and spring base is arranged in the body cavity, and an end of valve spring is nested with on the spring base head; The other end of valve spring is connected with the valve core is inconsistent; Be lined with potted component between valve core and the input adapter, fire-stopping pipe is positioned at above the spring base, it is characterized in that: the valve pad that described potted component adopts the fluorubber material to process; What described fire-stopping pipe adopted is the fire-stopping pipe that 80-120 purpose stainless steel particle sintering is processed; Gas flows to the outer rim passage that cavity forms between main body and the fire-stopping pipe through the tube wall of fire-stopping pipe; The outer rim passage is communicated with out splice going splice through the sulculus of spring base, the logical loop of the gas that air inlet in the middle of forming, wing are given vent to anger.
2. flash-back arrestor according to claim 1 is characterized in that: described fire-stopping pipe one end seals with Hpb59-1 copper, and the flow design of fire-stopping pipe is 15m
3/ h.
3. flash-back arrestor according to claim 1 is characterized in that: described main body is processed into by H62 copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910154320A CN102080825B (en) | 2009-11-26 | 2009-11-26 | Back-fire arrestor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910154320A CN102080825B (en) | 2009-11-26 | 2009-11-26 | Back-fire arrestor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102080825A CN102080825A (en) | 2011-06-01 |
| CN102080825B true CN102080825B (en) | 2012-10-10 |
Family
ID=44086932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910154320A Expired - Fee Related CN102080825B (en) | 2009-11-26 | 2009-11-26 | Back-fire arrestor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102080825B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777916B (en) * | 2012-08-29 | 2014-10-15 | 北京中气华辰新能源技术开发有限公司 | Tempering preventing device |
| CN103090393B (en) * | 2012-12-27 | 2015-06-17 | 宁波市江北兴达焊割减压仪表厂 | Cutting torch with tempering-prevention device |
| CN103591582B (en) * | 2013-11-18 | 2015-09-30 | 宁波隆兴焊割科技股份有限公司 | One is penetrated and is inhaled internal-mixing Backfire preventing cutting torch |
| CN107702091A (en) * | 2017-09-25 | 2018-02-16 | 南京律智诚专利技术开发有限公司 | The intelligent natural gas fired incinerators of tempering phenomenon can be avoided |
| CN113028425B (en) * | 2021-03-29 | 2021-09-14 | 浙江先创能源科技股份有限公司 | Full-premixing natural gas combustion device |
| CN115435127A (en) * | 2022-07-15 | 2022-12-06 | 宁波隆兴气割工具有限公司 | Anti-backfire pressure reducer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181530A (en) * | 1985-09-10 | 1987-04-23 | Butcher Brothers Limited | Flashback arrestor |
| CN86208271U (en) * | 1986-10-29 | 1988-07-06 | 浙江省天台县粉沫治金厂 | Device for avoiding acetylene flashback |
| CN2059612U (en) * | 1988-10-22 | 1990-07-25 | 浙江省天台干式回火防止器制造厂 | Dry backfire arrestor for tail end of spary welding torch |
| CN2338582Y (en) * | 1998-05-18 | 1999-09-15 | 沈英才 | Fire fighting quick coupling pipe-line joint |
| CN2402917Y (en) * | 1999-12-21 | 2000-10-25 | 张乾明 | Double check valve type dry fire back preventer |
| CN2456749Y (en) * | 2000-12-27 | 2001-10-31 | 天津钢管公司 | Preventor of acetylene flashback |
| EP1805456A1 (en) * | 2004-08-25 | 2007-07-11 | The BOC Group plc | Oxygen administration apparatus |
-
2009
- 2009-11-26 CN CN200910154320A patent/CN102080825B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181530A (en) * | 1985-09-10 | 1987-04-23 | Butcher Brothers Limited | Flashback arrestor |
| CN86208271U (en) * | 1986-10-29 | 1988-07-06 | 浙江省天台县粉沫治金厂 | Device for avoiding acetylene flashback |
| CN2059612U (en) * | 1988-10-22 | 1990-07-25 | 浙江省天台干式回火防止器制造厂 | Dry backfire arrestor for tail end of spary welding torch |
| CN2338582Y (en) * | 1998-05-18 | 1999-09-15 | 沈英才 | Fire fighting quick coupling pipe-line joint |
| CN2402917Y (en) * | 1999-12-21 | 2000-10-25 | 张乾明 | Double check valve type dry fire back preventer |
| CN2456749Y (en) * | 2000-12-27 | 2001-10-31 | 天津钢管公司 | Preventor of acetylene flashback |
| EP1805456A1 (en) * | 2004-08-25 | 2007-07-11 | The BOC Group plc | Oxygen administration apparatus |
Non-Patent Citations (1)
| Title |
|---|
| JP特開昭59-41708A 1984.03.08 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102080825A (en) | 2011-06-01 |
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Granted publication date: 20121010 Termination date: 20191126 |
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