CN202876161U - Automatic explosion suppression device of inflammable gas delivery pipeline - Google Patents
Automatic explosion suppression device of inflammable gas delivery pipeline Download PDFInfo
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- CN202876161U CN202876161U CN 201220577508 CN201220577508U CN202876161U CN 202876161 U CN202876161 U CN 202876161U CN 201220577508 CN201220577508 CN 201220577508 CN 201220577508 U CN201220577508 U CN 201220577508U CN 202876161 U CN202876161 U CN 202876161U
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- fuel gas
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- explosion suppression
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Abstract
The utility model relates to an automatic explosion suppression device of an inflammable gas delivery pipeline, which is used for extinguishing a fire or suppressing an explosion in the inflammable gas delivery pipeline. The automatic explosion suppression device is arranged outside the inflammable gas delivery pipeline (8) and consists of a high-pressure container (1), a controller (5), a flame sensor (4) and a fire extinguishment executing device, wherein the high-pressure container (1) and the controller (5) are arranged outside the inflammable gas delivery pipeline (8); and the flame sensor (4) is arranged in the inflammable gas delivery pipeline (8) and is electrically connected with the controller (5). Multiple gas delivery simulation explosion experiments and tests prove that the whole control system fully meets the technical conditions and requirements of an explosion suppression device of a coal-mine gas delivery pipeline, and no flame information exists in a range more than 6 meters away from an automatic explosion suppression sprayer. The automatic explosion suppression device is suitable for suppressing inflammable and explosive gas and combustible dust from being burnt and exploded in an expanded scope, so that safe delivery of gas is ensured.
Description
Technical field
The utility model relates to fuel gas feeding device structural design and applied technical field, and a kind of explosion suppression device for the contingent gas explosion accident fire extinguishing in colliery is provided especially.
Background technology
HS active explosion suppression systems technology comes from military field, is the ultrahigh speed fire extinguishing and explosion restraining system for the exploitation of contingent gas explosion accident specialized designs, has active monitoring, high-speed starting, the automatic outstanding feature such as datonation-inhibition.In the development course more than 25 year, stood to comprise that a plurality of national officials such as South Africa, Spain, the U.S., Germany, China and third party's independent agency are above the 1000 multinomial test under various environment and condition and evaluations.Its advance, adaptability, stability and reliability have obtained the consistent approval of all mechanism for testing, lead over the world with original technical performance.Having applied for the international monopoly registration, is present in the world the most advanced and unique input commercial operation datonation-inhibition guard technology, by a plurality of National Mining giant's extensive uses such as South Africa, Spain, Australia, Germany, Russia.In South Africa, all have been forced to require this system of equipment in the colliery of dangerous seam mining.
China is the most serious country of Gas Disaster, and for administering the generation of gas, minimizing gas accident, gas pumping utilizes technology and relevant equipment to be widely used in the colliery in recent years.Gas safety ground in the coal seam is extracted out and be used, both can prevent effectively that coal mine gas explosion from occuring, and can obtain again preferably economic benefit and social benefit.
China's Part Coal Mine is equipped with safe-guard system in the low concentration gas conveyance conduit at present, but along with the raising of science and technology, more and more higher to the requirement of safety in production, the specification requirement deviation of existing datonation-inhibition technology and new safety standard defined is larger, roughly has following problem.
1) the flame sensor response time is long;
2) response time of controller is long;
3) action response time of datonation-inhibition sprinkler is long;
4) firing-fighting medium is powder extinguishing agent, has a lot of drawbacks;
5) controller poor stability.
People in the urgent need to a kind of can be when mine gas drainage pipeline breaking out of fire, the explosion accident, can in time stamp out a fire or the explosion suppression device of the wider development that suppresses to explode.
Summary of the invention
The purpose of this utility model provides the automatic explosion suppression device of a kind of fuel gas conveyance conduit, and a kind of ultrahigh speed fire-extinguishing explosion suppression device for the contingent gas explosion accident in colliery is provided especially.
The automatic explosion suppression device of a kind of fuel gas conveyance conduit of the utility model is used for putting out fire or the inhibition blast that fuel gas transportation pipeline 8 occurs, and is installed on fuel gas transportation pipeline 8 outsides; The automatic explosion suppression device of described fuel gas conveyance conduit is made of high-pressure bottle 1, controller 5, flame sensor 4, fire extinguishing actuating unit, the high-pressure bottle 1 of in-built firing-fighting medium is arranged in fuel gas transportation pipeline 8 outsides, controller 5 is arranged in fuel gas transportation pipeline 8 outsides, flame sensor 4 is arranged in fuel gas transportation pipeline 8 inside, is electrically connected with controller 5.High-pressure bottle 1 is used for storing the high-pressure extinction medium; Flame sensor 4 is for detection of the fuel gas transportation pipeline 8 inner condition of a fire, in case the condition of a fire occurs, flame sensor 4 is sent to controller 5 with signal, opens gauge tap by controller 5, enters the fire suppression process.
The automatic explosion suppression device of described fuel gas conveyance conduit also is provided with short tube 2, and an end of short tube 2 is fixedly connected on the fuel gas transportation pipeline 8, and the other end is fixedly connected on the high-pressure bottle 1.The flexible connection that high-pressure bottle 1 and short tube 2 can be dismantled.
Described fire extinguishing actuating unit is arranged on the short tube 2, and the fire extinguishing actuating unit is made of pressure valve 3, jet pipe 6 and nozzle 7; Wherein: pressure valve 3 is fixedly mounted on short tube 2 inside; Pressure valve 3 is used for when the condition of a fire occurs, and opening switch under the control of controller 5 releases firing-fighting medium from high-pressure bottle 1, puts out fire and suffers from;
Described jet pipe 6 and nozzle 7,6 one-tenth " L " types of jet pipe structure; Nozzle 7 is sector structure, and the flow direction of its reverse fuel gas is arranged installation.Jet pipe 6 is used for the guiding firing-fighting medium and sprays the trouble developing direction of waring oneself in front of a fire, can the establishment fire spread; Fan nozzle 7 can be wider the sprinkling firing-fighting medium, make firing-fighting medium can be fast, contact with flame fully, play the effectiveness of quick extinguishing.
The automatic explosion suppression device of described fuel gas conveyance conduit satisfies following requirement:
Described controller 5 is the PLC intelligent controller, and datonation-inhibition control technology adopts the PLC intelligence control method, and security and stability is high;
The response time of flame sensor 4 is less than 5ms;
The control time of controller 5 is less than 15ms;
Spray deadline less than 150ms less than 15ms sprinkling lag time of fire extinguishing actuating unit;
High-pressure bottle 1 is specially in-built liquid CO
2Container.
The characteristics that carbon dioxide gasifies rapidly, recepts the caloric greatly, easily stores and put out a fire and need not to clear up without vestige afterwards when having ejection are that the carbon dioxide after the gasification has again the oxygen concentration of watering down effect stamping out a fire simultaneously.
In when, in the gas conveyer tube condition of a fire occuring when, flame sensor 4 captures flare up fire and is delivered to controller 5 by optical principle, 5 pairs of signals of explosion suppression control unit are judged and parsing, send signal to pressure valve 3 in blast near the moment between the guard plot, open pressure valve 3 in time at 15ms, discharge the datonation-inhibition medium of high energy of high-pressure bottle 1 interior storage by nozzle 7 assemblies, thereby form datonation-inhibition barrier, the diffusion of blocking-up flame.Nozzle 7 assemblies adopt special-purpose leakproof one-way valve designs, can bear 2MPa pressure.
Through the repeatedly test of gas conveying simulated explosion and test, whole control system has reached technical conditions and the requirement of coal mine gas conveyance conduit explosion suppression device fully, can detect flame information and spray fast the liquid carbon dioxide fire-fighting medium, outside datonation-inhibition sprinkler 6m without flame information, be applicable to suppress the expansion burning and blast of flammable explosive gas and combustible dust, guarantee safe transport and the utilization of gas.
Description of drawings
Below in conjunction with drawings and the embodiments the utility model is described in further detail:
Fig. 1 is that the automatic explosion suppression device mounting arrangements of fuel gas conveyance conduit concerns schematic diagram;
Fig. 2 is the automatic explosion suppression device principle of automatic control of fuel gas conveyance conduit figure;
Fig. 3 is that the automatic explosion suppression device electrical equipment of fuel gas conveyance conduit connects schematic block diagram.
The specific embodiment
The implication of each Reference numeral is described as follows in the accompanying drawing:
High-pressure bottle 1, short tube 2, pressure valve 3, flame sensor 4, controller 5, jet pipe 6, nozzle 7, fuel gas transportation pipeline 8;
The direction of arrow is fuel gas circulation direction in the fuel gas transportation pipeline in the accompanying drawing.
Embodiment 1:
The automatic explosion suppression device of a kind of fuel gas conveyance conduit is used for putting out fire or the inhibition blast that fuel gas transportation pipeline 8 occurs, and is installed on fuel gas transportation pipeline 8 outsides; The automatic explosion suppression device of described fuel gas conveyance conduit is made of high-pressure bottle 1, controller 5, flame sensor 4, fire extinguishing actuating unit, the high-pressure bottle 1 of in-built firing-fighting medium is arranged in fuel gas transportation pipeline 8 outsides, controller 5 is arranged in fuel gas transportation pipeline 8 outsides, flame sensor 4 is arranged in fuel gas transportation pipeline 8 inside, is electrically connected with controller 5.High-pressure bottle 1 is used for storing the high-pressure extinction medium; Flame sensor 4 is for detection of the fuel gas transportation pipeline 8 inner condition of a fire, in case the condition of a fire occurs, flame sensor 4 is sent to controller 5 with signal, opens gauge tap by controller 5, enters the fire suppression process.
The automatic explosion suppression device of described fuel gas conveyance conduit also is provided with short tube 2, and an end of short tube 2 is fixedly connected on the fuel gas transportation pipeline 8, and the other end is fixedly connected on the high-pressure bottle 1.High-pressure bottle 1 is fixedly connected with short tube 2 activities, and high-pressure bottle 1 can repeated disassembled and assembled.
The automatic explosion suppression device of described fuel gas conveyance conduit also is provided with short tube 2, and an end of short tube 2 is fixedly connected on the fuel gas transportation pipeline 8, and the other end is fixedly connected on the high-pressure bottle 1.The flexible connection that high-pressure bottle 1 and short tube 2 can be dismantled.
Described fire extinguishing actuating unit is arranged on the short tube 2, and the fire extinguishing actuating unit is made of pressure valve 3, jet pipe 6 and nozzle 7; Wherein: pressure valve 3 is fixedly mounted on short tube 2 inside; Pressure valve 3 is used for when the condition of a fire occurs, and opening switch under the control of controller 5 releases firing-fighting medium from high-pressure bottle 1, puts out fire and suffers from;
Described jet pipe 6 and nozzle 7,6 one-tenth " L " types of jet pipe structure; Nozzle 7 is sector structure, and the flow direction of its reverse fuel gas is arranged installation.Jet pipe 6 is used for the guiding firing-fighting medium and sprays the trouble developing direction of waring oneself in front of a fire, can the establishment fire spread; Fan nozzle 7 can be wider the sprinkling firing-fighting medium, make firing-fighting medium can be fast, contact with flame fully, play the effectiveness of quick extinguishing.
The automatic explosion suppression device of described fuel gas conveyance conduit satisfies following requirement:
Described controller 5 is the PLC intelligent controller, and datonation-inhibition control technology adopts the PLC intelligence control method, and security and stability is high;
The response time of flame sensor 4 is less than 5ms;
The control time of controller 5 is less than 15ms;
Spray deadline less than 150ms less than 15ms sprinkling lag time of fire extinguishing actuating unit;
High-pressure bottle 1 is specially in-built liquid CO
2Container.
The characteristics that carbon dioxide gasifies rapidly, recepts the caloric greatly, easily stores and put out a fire and need not to clear up without vestige afterwards when having ejection are that the carbon dioxide after the gasification has again the oxygen concentration of watering down effect stamping out a fire simultaneously.
In when, in the gas conveyer tube condition of a fire occuring when, flame sensor 4 captures flare up fire and is delivered to controller 5 by optical principle, 5 pairs of signals of explosion suppression control unit are judged and parsing, send signal to pressure valve 3 in blast near the moment between the guard plot, open pressure valve 3 in time at 15ms, discharge the datonation-inhibition medium of high energy of high-pressure bottle 1 interior storage by nozzle 7 assemblies, thereby form datonation-inhibition barrier, the diffusion of blocking-up flame.Nozzle 7 assemblies adopt special-purpose leakproof one-way valve designs, can bear 2MPa pressure.
At coal mine ground gas blow-down pipe the described device of present embodiment is installed, when the gas explosion accident that causes because of reasons such as thunderbolts, when flame is propagated to the down-hole in pipeline, when flame detector has been sensed flame, send signal to controller 5, again by controller 5 control opening pressure valves 3, after pressure valve 3 is opened, high-pressure bottle 1 discharges the liquid carbon dioxide that is stored in high-pressure bottle 1 the inside, realizes the purpose of putting out a fire and suppressing to explode and spreading.
Through the repeatedly test of gas conveying simulated explosion and test, whole control system has reached technical conditions and the requirement of coal mine gas conveyance conduit explosion suppression device fully, can detect flame information and spray fast the liquid carbon dioxide fire-fighting medium, outside datonation-inhibition sprinkler 6m without flame information, be applicable to suppress the expansion burning and blast of flammable explosive gas and combustible dust, guarantee safe transport and the utilization of gas.
Embodiment 2:
The automatic explosion suppression device of a kind of fuel gas conveyance conduit is used for putting out fire or the inhibition blast that fuel gas transportation pipeline 8 occurs, and is installed on fuel gas transportation pipeline 8 outsides; The automatic explosion suppression device of described fuel gas conveyance conduit is made of high-pressure bottle 1, controller 5, flame sensor 4, fire extinguishing actuating unit, the high-pressure bottle 1 of in-built firing-fighting medium is arranged in fuel gas transportation pipeline 8 outsides, controller 5 is arranged in fuel gas transportation pipeline 8 outsides, flame sensor 4 is arranged in fuel gas transportation pipeline 8 inside, is electrically connected with controller 5.High-pressure bottle 1 is used for storing the high-pressure extinction medium; Flame sensor 4 is for detection of the fuel gas transportation pipeline 8 inner condition of a fire, in case the condition of a fire occurs, flame sensor 4 is sent to controller 5 with signal, opens gauge tap by controller 5, enters the fire suppression process.
The automatic explosion suppression device of described fuel gas conveyance conduit also is provided with short tube 2, and an end of short tube 2 is fixedly connected on the fuel gas transportation pipeline 8, and the other end is fixedly connected on the high-pressure bottle 1.High-pressure bottle 1 is fixedly connected with short tube 2 activities, and high-pressure bottle 1 can repeated disassembled and assembled.
The automatic explosion suppression device of described fuel gas conveyance conduit also is provided with short tube 2, and an end of short tube 2 is fixedly connected on the fuel gas transportation pipeline 8, and the other end is fixedly connected on the high-pressure bottle 1.The flexible connection that high-pressure bottle 1 and short tube 2 can be dismantled.
Described fire extinguishing actuating unit is arranged on the short tube 2, and the fire extinguishing actuating unit is made of pressure valve 3, jet pipe 6 and nozzle 7; Wherein: pressure valve 3 is fixedly mounted on short tube 2 inside; Pressure valve 3 is used for when the condition of a fire occurs, and opening switch under the control of controller 5 releases firing-fighting medium from high-pressure bottle 1, puts out fire and suffers from;
Described jet pipe 6 and nozzle 7,6 one-tenth " L " types of jet pipe structure; Nozzle 7 is sector structure, and the flow direction of its reverse fuel gas is arranged installation.Jet pipe 6 is used for the guiding firing-fighting medium and sprays the trouble developing direction of waring oneself in front of a fire, can the establishment fire spread; Fan nozzle 7 can be wider the sprinkling firing-fighting medium, make firing-fighting medium can be fast, contact with flame fully, play the effectiveness of quick extinguishing.
The automatic explosion suppression device of described fuel gas conveyance conduit satisfies following requirement:
Described controller 5 is the PLC intelligent controller, and datonation-inhibition control technology adopts the PLC intelligence control method, and security and stability is high;
The response time of flame sensor 4 is less than 5ms;
The control time of controller 5 is less than 15ms;
Spray deadline less than 150ms less than 15ms sprinkling lag time of fire extinguishing actuating unit;
High-pressure bottle 1 is specially in-built liquid CO
2Container.
The characteristics that carbon dioxide gasifies rapidly, recepts the caloric greatly, easily stores and put out a fire and need not to clear up without vestige afterwards when having ejection are that the carbon dioxide after the gasification has again the oxygen concentration of watering down effect stamping out a fire simultaneously.
In when, in the fuel gas conveyance conduit condition of a fire occuring when, flame sensor 4 captures flare up fire and is delivered to controller 5 by optical principle, 5 pairs of signals of explosion suppression control unit are judged and parsing, send signal to pressure valve 3 in blast near the moment between the guard plot, open pressure valve 3 in time at 15ms, discharge the datonation-inhibition medium of high energy of high-pressure bottle 1 interior storage by nozzle 7 assemblies, thereby form datonation-inhibition barrier, the diffusion of blocking-up flame.Nozzle 7 assemblies adopt special-purpose leakproof one-way valve designs, can bear 2MPa pressure.
At factories and miness ground fuel gas blow-down pipe the described device of present embodiment is installed, when the flammable gas explosion accident that causes because of reasons such as thunderbolts, when flame is propagated to the down-hole in pipeline, when flame detector has been sensed flame, send signal to controller 5, again by controller 5 control opening pressure valves 3, after pressure valve 3 is opened, high-pressure bottle 1 discharges the liquid carbon dioxide that is stored in high-pressure bottle 1 the inside, realizes the purpose of putting out a fire and suppressing to explode and spreading.
Claims (5)
1. automatic explosion suppression device of fuel gas conveyance conduit, be used for putting out fire or the inhibition blast that fuel gas transportation pipeline (8) occurs, be installed on fuel gas transportation pipeline (8) outside, it is characterized in that: the automatic explosion suppression device of described fuel gas conveyance conduit is by high-pressure bottle (1), controller (5), flame sensor (4), the fire extinguishing actuating unit consists of, the high-pressure bottle of in-built firing-fighting medium (1) is arranged in fuel gas transportation pipeline (8) outside, controller (5) is arranged in fuel gas transportation pipeline (8) outside, flame sensor (4) is arranged in fuel gas transportation pipeline (8) inside, and flame sensor (4) is electrically connected with controller (5).
2. according to the automatic explosion suppression device of the described fuel gas conveyance conduit of claim 1, it is characterized in that: the automatic explosion suppression device of described fuel gas conveyance conduit also is provided with short tube (2), one end of short tube (2) is fixedly connected on the fuel gas transportation pipeline (8), and the other end is fixedly connected with high-pressure bottle (1); The flexible connection that described high-pressure bottle (1) and short tube (2) can be dismantled.
3. according to the automatic explosion suppression device of the described fuel gas conveyance conduit of claim 2, it is characterized in that: described fire extinguishing actuating unit is arranged on the short tube (2), and the fire extinguishing actuating unit is made of pressure valve (3), jet pipe (6) and nozzle (7); Wherein: pressure valve (3) is fixedly mounted on short tube (2) inside; Jet pipe (6) is arranged in the inside of fuel gas transportation pipeline (8), and an end of jet pipe (6) is fixedly connected with pressure valve (3); The other end is equipped with nozzle (7).
4. according to the automatic explosion suppression device of the described fuel gas conveyance conduit of claim 3, it is characterized in that, described jet pipe (6) and nozzle (7), jet pipe (6) becomes " L " type structure; Nozzle (7) is sector structure, and the flow direction of its reverse fuel gas is arranged installation.
5. according to the automatic explosion suppression device of one of them described fuel gas conveyance conduit of claim 1-4, it is characterized in that:
The automatic explosion suppression device of described fuel gas conveyance conduit satisfies following requirement:
Described controller (5) is the PLC intelligent controller, and datonation-inhibition control technology adopts the PLC intelligence control method, and security and stability is high;
The response time of flame sensor (4) is less than 5ms;
The control time of controller (5) is less than 15ms;
Spray deadline less than 150ms less than 15ms sprinkling lag time of fire extinguishing actuating unit;
High-pressure bottle (1) is specially the container of in-built liquid CO 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220577508 CN202876161U (en) | 2012-11-05 | 2012-11-05 | Automatic explosion suppression device of inflammable gas delivery pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220577508 CN202876161U (en) | 2012-11-05 | 2012-11-05 | Automatic explosion suppression device of inflammable gas delivery pipeline |
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| CN202876161U true CN202876161U (en) | 2013-04-17 |
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| CN 201220577508 Expired - Fee Related CN202876161U (en) | 2012-11-05 | 2012-11-05 | Automatic explosion suppression device of inflammable gas delivery pipeline |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104482412A (en) * | 2014-11-26 | 2015-04-01 | 中国矿业大学 | Gas flame capturing and extinguishing device |
| CN105498117A (en) * | 2016-01-20 | 2016-04-20 | 王玉伟 | Isolation fire-fighting device |
| CN105664400A (en) * | 2016-04-15 | 2016-06-15 | 中煤科工集团重庆研究院有限公司 | Fast and automatic carbon dioxide combustion and explosion suppression system |
| CN105709353A (en) * | 2016-04-15 | 2016-06-29 | 中煤科工集团重庆研究院有限公司 | Carbon dioxide explosion suppressor |
| CN106422120A (en) * | 2016-11-17 | 2017-02-22 | 中国计量大学 | Industrial pipeline combustible gas explosion inhibiting device and triggering method thereof |
| WO2017070737A1 (en) * | 2015-10-30 | 2017-05-04 | Commonwealth Scientific And Industrial Research Organisation | "ducting system" |
| CN109342399A (en) * | 2018-11-21 | 2019-02-15 | 四川出入境检验检疫局检验检疫技术中心 | The fire-proof and explosion-proof protective device of Raman spectrometer measurement inflammable explosive article |
| CN110529175A (en) * | 2019-08-31 | 2019-12-03 | 贵州大学 | A kind of conveying device utilized for Gas recovery |
| EP3578232A1 (en) * | 2018-06-08 | 2019-12-11 | Leinemann GmbH & Co. KG | Method for extinguishing a flame front and extinguishing device |
| CN110687861A (en) * | 2019-10-31 | 2020-01-14 | 深圳前海中科胜铭科技有限公司 | Community gas security protection linkage method and system |
| CN111828841A (en) * | 2020-07-06 | 2020-10-27 | 北京科技大学 | System for actively inhibiting explosion of toxic and harmful gases |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104482412A (en) * | 2014-11-26 | 2015-04-01 | 中国矿业大学 | Gas flame capturing and extinguishing device |
| CN104482412B (en) * | 2014-11-26 | 2017-06-23 | 中国矿业大学 | A kind of gas flame capture and extinguishing means |
| WO2017070737A1 (en) * | 2015-10-30 | 2017-05-04 | Commonwealth Scientific And Industrial Research Organisation | "ducting system" |
| US10758753B2 (en) | 2015-10-30 | 2020-09-01 | Commonwealth Scientific And Industrial Research Organisation | Ducting system |
| CN105498117A (en) * | 2016-01-20 | 2016-04-20 | 王玉伟 | Isolation fire-fighting device |
| CN105664400A (en) * | 2016-04-15 | 2016-06-15 | 中煤科工集团重庆研究院有限公司 | Fast and automatic carbon dioxide combustion and explosion suppression system |
| CN105709353A (en) * | 2016-04-15 | 2016-06-29 | 中煤科工集团重庆研究院有限公司 | Carbon dioxide explosion suppressor |
| CN106422120A (en) * | 2016-11-17 | 2017-02-22 | 中国计量大学 | Industrial pipeline combustible gas explosion inhibiting device and triggering method thereof |
| CN106422120B (en) * | 2016-11-17 | 2019-05-14 | 中国计量大学 | A kind of industrial pipeline flammable gas explosion inhibits device and its triggering method |
| EP3578232A1 (en) * | 2018-06-08 | 2019-12-11 | Leinemann GmbH & Co. KG | Method for extinguishing a flame front and extinguishing device |
| CN110575633A (en) * | 2018-06-08 | 2019-12-17 | 莱内曼两合公司 | Method for extinguishing a flame front and fire extinguishing device |
| CN110575633B (en) * | 2018-06-08 | 2022-06-14 | 莱内曼两合公司 | Method and fire-extinguishing device for extinguishing a flame front |
| US11602653B2 (en) | 2018-06-08 | 2023-03-14 | Leinemann Gmbh & Co. Kg | Method for extinguishing a flame front and extinguishing device |
| CN109342399A (en) * | 2018-11-21 | 2019-02-15 | 四川出入境检验检疫局检验检疫技术中心 | The fire-proof and explosion-proof protective device of Raman spectrometer measurement inflammable explosive article |
| CN109342399B (en) * | 2018-11-21 | 2024-04-09 | 四川出入境检验检疫局检验检疫技术中心 | Fireproof and explosion-proof protection device for measuring inflammable and explosive products by Raman spectrometer |
| CN110529175A (en) * | 2019-08-31 | 2019-12-03 | 贵州大学 | A kind of conveying device utilized for Gas recovery |
| CN110687861A (en) * | 2019-10-31 | 2020-01-14 | 深圳前海中科胜铭科技有限公司 | Community gas security protection linkage method and system |
| CN110687861B (en) * | 2019-10-31 | 2021-05-18 | 深圳前海中科胜铭科技有限公司 | Community gas security protection linkage method and system |
| CN111828841A (en) * | 2020-07-06 | 2020-10-27 | 北京科技大学 | System for actively inhibiting explosion of toxic and harmful gases |
| CN111828841B (en) * | 2020-07-06 | 2021-11-05 | 北京科技大学 | System for actively inhibiting explosion of toxic and harmful gases |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131105 |