CN103114869B - Device for suppressing gas explosion and application method for device - Google Patents
Device for suppressing gas explosion and application method for device Download PDFInfo
- Publication number
- CN103114869B CN103114869B CN201310062687.7A CN201310062687A CN103114869B CN 103114869 B CN103114869 B CN 103114869B CN 201310062687 A CN201310062687 A CN 201310062687A CN 103114869 B CN103114869 B CN 103114869B
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- China
- Prior art keywords
- sensor
- controller
- injector
- flame
- receiving chamber
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0036—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using foam
Abstract
The invention discloses a device for suppressing gas explosion and an application method for the device, and belongs to devices and methods for suppressing gas explosion of coal mines. The device comprises a sensor assembly, a controller, a compressed air control switch, an ejector, an extinguishing agent container and a U-shaped water tank; and the sensor assembly is connected with an input end of the controller by a data line, an output end of the controller is connected with the compressed air control switch, the compressed air control switch is mounted at a compressed air inlet of the ejector, the ejector is connected with the extinguishing agent container by a pipeline, and the U-shaped water tank is connected onto a water inlet of the extinguishing agent container. The controller is used for receiving signals of a flame sensor, a temperature sensor and a pressure sensor and issues action commands to the compressed air control switch; one end of the extinguishing agent container is connected with a receiving chamber, and the other end of the extinguishing agent container is connected with the U-shaped water tank; foam extinguishing agents are sucked into the receiving chamber of the ejector, and compressed air is mixed with the foam extinguishing agents in a mixing chamber, so that foam is formed; and the extinguishing agents are ejected via a nozzle towards explosion flame and extinguish the explosion flame.
Description
Technical field
The present invention relates to a kind of device and method suppressing coal mine gas from explosion, particularly a kind of device and using method thereof suppressing gas explosion.
Background technology
Coal is the main energy sources of China, accounts for the 70%-75% of China's primary energy production and consumption structure at present.Country's " energy Long-and Medium-term Development planning outline (2004 ~ the year two thousand twenty) " points out that China implements the energy strategy of oil gas and new forms of energy development in an all-round way " based on the coal, centered by electric power, ".Within current and quite long from now on period, coal will as the leading energy of China.Over nearly 5 years (2005-2009), coal mining accident accounts for the 72.8%-86.3% of industrial and mining enterprises' once above serious accident of dead 10 people, and therefore, Safety of Coal Mine Production is the developing significant problem of Chinese national economy always.In China's coal-mine severe and great casualty, gas explosion accident plays number in death toll, accident and the economic loss that causes is in first of all kinds of disaster always.Since the establishment of the nation, there is the serious accident of more than 24 dead hundred people in national colliery altogether, and wherein gas explosion accident 22, accounts for 91.7% of total number of accident, is the disaster that China's coal-mine is the most serious.Nearly ten years (2000 to 2009), there is gas explosion accident 237 in colliery, dead 6522 people altogether.The generation of these accidents, causes very large impact all socially.
In order to address this problem, the explosion isolation camp such as extensive use tank, stone-dust barrier in coal production process, this belongs to passive type explosion isolation device, respectively using water and rock dust as blast reducer.Its action principle is: when there is gas explosion, the tank on explosion isolation camp or rock dust bag are overturned or smashed by the prodromal blast wave being ahead of explosive flame, and water or rock dust are released, and forms water smoke district or rock dust cloud sector in tunnel; When the flame lagging behind prodromal blast wave passes to this region, flame will be put out by water smoke or rock dust, thus prevents the continuation of blast to propagate, and prevents the expansion of gas explosion scope.Therefrom can find out, two preconditions that explosion isolation camp plays a role are: one is that the energy of prodromal blast wave is enough large, the tank on explosion isolation camp or rock dust bag can be thrown, make it form water smoke or rock dust cloud; Two is actuation times that will be later than explosion isolation camp the time of advent of flame, simultaneously will early than the action time in water smoke or rock dust cloud sector.
But in actual use, the use of explosion isolation camp exists following shortcoming: the water capacity of tank is volatile, timing is needed to add; The easy moisture cake of salinity, makes its extinguishing effect weaken; Installation accuracy is high, is active in one's movements and is easily thrown when little vibration, can miss the best opportunity forming water smoke or rock dust cloud sector when action is insensitive.
Summary of the invention
Technical problem: the object of the invention is to the weak point overcome in prior art, provides device and the using method thereof of the suppression gas explosion that a kind of structure is simple, effectiveness of explosion suppression is good.
Technical scheme: the object of the present invention is achieved like this: the device and the using method thereof that suppress gas explosion, its device comprises sensor unit, controller, pressure wind gauge tap, injector formula injector, foamite container, U-shaped tank; Sensor unit is connected with the input of controller by data wire, the output of controller is connected with pressure wind gauge tap, pressure wind gauge tap is arranged on the pressure wind porch of injector formula injector, injector formula injector 2 is connected with foamite container by pipeline, and the water inlet of foamite container is connected with U-shaped tank.
Described sensor unit comprises flame sensor, temperature sensor and pressure sensor, and flame sensor, temperature sensor and pressure sensor are arranged in top, tunnel, arrange successively.
Described injector formula injector comprises input pipe and efferent duct, and the front end of input pipe is inner nozzle, and the rear end of input pipe is pressure wind entrance, and input pipe is inserted in efferent duct, and inner nozzle is positioned at efferent duct; Efferent duct comprises receiving chamber, mixing chamber and nozzle, and inner nozzle is positioned at receiving chamber position, and mixing chamber, between receiving chamber and nozzle, is provided with internal thread in nozzle; Injector formula injector is arranged in the lane side at head-room half place, and both sides, tunnel are alternately arranged, spacing is at 50 ~ 80m.
There is a groove bottom described foamite container, in groove, have pipeline to be connected with the receiving chamber of injector formula injector; Foamite container is equipped with one and adds fire foam valve.
One end above described U-shaped tank is connected with the valve that adds water, and U-shaped tank 5 other end leads to air, in contraction-like.
A kind of method suppressing gas explosion: at back sensor installation assembly, comprise flame sensor, temperature sensor and pressure sensor, sensor unit monitors the change of flame, temperature, pressure simultaneously, the output of three sensors is connected with the input of controller, the signal of three sensors sends controller to simultaneously, the signal of three sensors and the logical relation of controller are the relations of "or", as long as there is a sensor signal to pass to controller, controller will be given an order to pressure wind gauge tap, controls pressure wind gauge tap and opens; Foamite container one end is connected with receiving chamber by pipeline, and the other end is connected with U-shaped tank by pipeline; The pressure wind of 0.5 ~ 1MPa enters receiving chamber by the inner nozzle of pressure wind entrance and injector formula injector, forms jet, produces and entrainment mobilization; Due to distinguished and admirable be in fast state and in receiving chamber formed a negative pressuren zone, the negative-pressure ward that fire foam is accepted room enters receiving chamber, pressure wind mix in mixing chamber with fire foam, carry out momentum-exchange, flow process medium velocity field is evenly distributed gradually; Be provided with internal thread in nozzle, fluid-mixing can strengthen turbulent flow through out-of-date, and the atomizing of further enhance fluid enhances the effect putting out explosive flame; Meanwhile, in opposite directions, angle is between 30 ~ 60 ° the installation direction of nozzle and the direction of detonation propagation; The extinguishing chemical of ejection is met to explosive flame, puts out explosive flame.
Beneficial effect, owing to have employed such scheme,
(1) sensor unit can monitor the change of flame, temperature, pressure simultaneously, as long as a signal transmission in flame, temperature, pressure is to controller, controller will be given an order to pressure wind gauge tap, make its action, be beneficial to like this and ensure to suppress the device of gas explosion can react within the fastest time.
(2) have a groove bottom foamite container, the pipeline being connected to receiving chamber is placed in this groove, and extinguishing chemical can be made like this to be fully utilized as far as possible; Have water in the U-shaped tank 5 be connected with foamite container, the water of groove forms fluid-tight, reduces the evaporation of fire foam; U-shaped tank mouth is contraction-like, can reduce evaporation of water like this.
(3) fire foam is sucked into the receiving chamber of injector formula injector, and pressure wind mixes in mixing chamber with fire foam, carries out momentum-exchange, forms foam in the process.
(4) be provided with internal thread in nozzle, fluid-mixing can strengthen turbulent flow through out-of-date, and then can the atomizing of enhance fluid, enhances the effect putting out explosive flame.Meanwhile, in opposite directions, angle is between 30 ~ 60 ° in the direction of nozzle and detonation propagation.The extinguishing chemical of ejection is met and is beneficial to putting out of flame to explosive flame.
Advantage of the present invention is: utilize three kinds of sensors to detect simultaneously, ensures the promptness detected; Utilize the Involving velocity of injector to make extinguishing chemical form foam in mixing chamber, be provided with internal thread in nozzle, fluid-mixing can strengthen turbulent flow through out-of-date, and the atomizing of further enhance fluid enhances the effect putting out explosive flame simultaneously; This contrive equipment using method is simple, and convenient operation, has good inhibitory action to the gas explosion accident of underground coal mine.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention.
In figure: 1, press wind entrance; 2, injector formula injector; 2-1, inner nozzle; 2-2, receiving chamber; 2-3, mixing chamber; 2-4, nozzle; 3, foamite container; 4, tank mouth; 5, U-shaped tank; 6, add water valve; 7, fire foam valve is added; 8, controller; 9, wind gauge tap is pressed; 10, data wire; 11, sensor unit.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Embodiment 1: a kind of device and using method thereof suppressing gas explosion, its device comprises sensor unit 11, controller 8, pressure wind gauge tap 9, injector formula injector 2, foamite container 3, U-shaped tank 5; Sensor unit 11 is connected by the input of data wire with controller 8, the output of controller 8 is connected with pressure wind gauge tap 9, pressure wind gauge tap 9 is arranged on pressure wind entrance 1 place of injector formula injector 2, the front end of pressure wind entrance 1 is inserted in injector formula injector 2, injector formula injector 2 is connected with foamite container 3 by pipeline, the water inlet of foamite container 3 is connected with U-shaped tank 5.
Described sensor unit comprises flame sensor, temperature sensor and pressure sensor, and sensor can monitor the change of flame, temperature, pressure simultaneously; Flame sensor, temperature sensor and pressure sensor are arranged in top, tunnel, arrange successively; ; Air line is connected with pressure wind entrance by screw thread or fast inserting.
Described controller 8 is for the signal of receiving sensor, and three kinds of signals of sensor and controller are logical relations is "or", as long as have a signal transmission to controller 8, controller 8 will be given an order to pressure wind gauge tap, makes its action;
Described injector formula injector 7 comprises input pipe and efferent duct, and the front end of input pipe is inner nozzle 2-1, and the rear end of input pipe is pressure wind entrance 1, and input pipe is inserted in efferent duct, and inner nozzle 2-1 is positioned at efferent duct; Efferent duct comprises receiving chamber 2-2, mixing chamber 2-3 and nozzle 2-4, inner nozzle is positioned at receiving chamber 2-2 position, mixing chamber 2-3 is between receiving chamber 2-3 and nozzle 2-4, internal thread is provided with in nozzle 2-4, fluid-mixing can strengthen turbulent flow through out-of-date, and then can the atomizing of enhance fluid, enhance the effect putting out explosive flame.Injector formula injector 2 is arranged in the lane side at head-room half place, and both sides, tunnel are alternately arranged, spacing is at 50 ~ 80m.
There is a groove bottom described foamite container 3, in groove, have pipeline to be connected with the receiving chamber 2-2 of injector formula injector 2, extinguishing chemical can be made like this to be fully utilized as far as possible; Foamite container 3 being equipped with one and adding fire foam valve 7, fire foam can be added in foamite container 3 by adding fire foam valve 7.
Described U-shaped tank 5 is connected with foamite container 3 by pipeline, and the one end above U-shaped tank 5 is connected with the valve 6 that adds water, and U-shaped tank 5 other end leads to air, in contraction-like, can reduce evaporation of water like this; In U-shaped tank 5, the water at place forms fluid-tight, can reduce the evaporation of fire foam like this.
When there is gas explosion accident, explosion wave is propagated along tunnel, and sensor unit 11 detects the change of monitoring flame, temperature or pressure.Signal passes to controller 8 by data wire 10, and controller 8 and then control pressure wind gauge tap 9, make its action.Now, the pressure wind of 0.5 ~ 1MPa enters receiving chamber 2-2 with very high speed from pressure wind entrance 1, forms jet, produces Involving velocity.Due to distinguished and admirable be in fast state and in receiving chamber 2-2 formed a negative pressuren zone, thus fire foam is just sucked into receiving chamber 2-2, pressure wind mixes in mixing chamber 2-3 with fire foam, carry out momentum-exchange, flow process medium velocity field is evenly distributed gradually, forms foam in the process.Be provided with screw thread in nozzle 2-4, fluid-mixing can strengthen turbulent flow through out-of-date, and then can the atomizing of enhance fluid, enhances the effect putting out explosive flame.Meanwhile, in opposite directions, angle is between 30 ~ 60 ° the installation direction of nozzle and the direction of detonation propagation.The extinguishing chemical of ejection is met to explosive flame, and then is put out by flame.Thus, reach the object stoping flame wave traveling, suppress gas explosion.
Claims (2)
1. suppress a device for gas explosion, it is characterized in that: device comprises sensor unit, controller, pressure wind gauge tap, injector formula injector, foamite container, U-shaped tank; Sensor unit is connected with the input of controller by data wire, the output of controller is connected with pressure wind gauge tap, pressure wind gauge tap is arranged on the pressure wind porch of injector formula injector, injector formula injector is connected with foamite container by pipeline, and the water inlet of foamite container is connected with U-shaped tank;
Described sensor unit comprises flame sensor, temperature sensor and pressure sensor, and flame sensor, temperature sensor and pressure sensor are arranged in top, tunnel, arrange successively;
Described injector formula injector comprises input pipe and efferent duct, and the front end of input pipe is inner nozzle, and the rear end of input pipe is pressure wind entrance, and input pipe is inserted in efferent duct, and inner nozzle is positioned at efferent duct; Efferent duct comprises receiving chamber, mixing chamber and nozzle, and inner nozzle is positioned at receiving chamber position, and mixing chamber, between receiving chamber and nozzle, is provided with internal thread in nozzle; Injector formula injector is arranged in the lane side at head-room half place, and both sides, tunnel are alternately arranged, spacing is at 50 ~ 80m;
There is a groove bottom described foamite container, in groove, have pipeline to be connected with the receiving chamber of injector formula injector; Foamite container is equipped with one and adds fire foam valve;
One end above described U-shaped tank is connected with the valve that adds water, and the U-shaped tank other end leads to air, in contraction-like.
2. one kind uses the method suppressing gas explosion device, it is characterized in that: at back sensor installation assembly, comprise flame sensor, temperature sensor and pressure sensor, sensor unit monitors flame simultaneously, temperature, the change of pressure, the output of three sensors is connected with the input of controller, the signal of three sensors sends controller to simultaneously, the signal of three sensors and the logical relation of controller are the relations of "or", as long as there is a sensor signal to pass to controller, controller will be given an order to pressure wind gauge tap, control pressure wind gauge tap to open, foamite container one end is connected with receiving chamber by pipeline, and the other end is connected with U-shaped tank by pipeline, the pressure wind of 0.5 ~ 1MPa enters receiving chamber by the inner nozzle of pressure wind entrance and injector formula injector, forms jet, produces and entrainment mobilization, due to distinguished and admirable be in fast state and in receiving chamber formed a negative pressuren zone, the negative-pressure ward that fire foam is accepted room enters receiving chamber, pressure wind mix in mixing chamber with fire foam, carry out momentum-exchange, flow process medium velocity field is evenly distributed gradually, be provided with internal thread in nozzle, fluid-mixing can strengthen turbulent flow through out-of-date, and the atomizing of further enhance fluid enhances the effect putting out explosive flame, meanwhile, in opposite directions, angle is between 30 ~ 60 ° the installation direction of nozzle and the direction of detonation propagation, the extinguishing chemical of ejection is met to explosive flame, puts out explosive flame.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310062687.7A CN103114869B (en) | 2013-02-28 | 2013-02-28 | Device for suppressing gas explosion and application method for device |
| PCT/CN2013/074456 WO2014131231A1 (en) | 2013-02-28 | 2013-04-19 | Apparatus for controlling gas explosions and method of use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310062687.7A CN103114869B (en) | 2013-02-28 | 2013-02-28 | Device for suppressing gas explosion and application method for device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103114869A CN103114869A (en) | 2013-05-22 |
| CN103114869B true CN103114869B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310062687.7A Active CN103114869B (en) | 2013-02-28 | 2013-02-28 | Device for suppressing gas explosion and application method for device |
Country Status (2)
| Country | Link |
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| CN (1) | CN103114869B (en) |
| WO (1) | WO2014131231A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121033A (en) * | 2014-07-31 | 2014-10-29 | 哈尔滨通用液压机械制造有限公司 | Coal mine dust spraying system |
| CN107796852A (en) * | 2017-10-20 | 2018-03-13 | 安徽理工大学 | One kind combination chamber structure suppresses gas explosion in underground coal mines test method |
| CN110242344A (en) * | 2019-07-30 | 2019-09-17 | 鄂尔多斯市中北煤化工有限公司 | A kind of device to mechanized coal mining bracket rear automatic spraying powdery fire proofing material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296401Y (en) * | 1996-10-19 | 1998-11-04 | 张文平 | Negative pressure dust trapping device for coal discharge outlet of discharge top coal hydraulic support |
| CN101021160A (en) * | 2007-03-05 | 2007-08-22 | 煤炭科学研究总院重庆分院 | High power inhibition foam for preventing and controlling coal self-ignition and generating device thereof |
| CN201401189Y (en) * | 2009-04-08 | 2010-02-10 | 煤炭科学研究总院重庆研究院 | Mine automatic powder spraying explosion-suppressing device |
| CN201818322U (en) * | 2010-10-20 | 2011-05-04 | 江都市引江矿业设备有限公司 | Gas-compressing, deslagging, drilling and dust remover for coal mine downhole |
| CN202017512U (en) * | 2011-03-15 | 2011-10-26 | 邹城兖矿泰德工贸有限公司 | Mechanical air water spraying device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763516B2 (en) * | 1990-06-14 | 1995-07-12 | 東京防災設備株式会社 | Automatic fire extinguishing system for electric fires etc. that occur inside the open / close type operation panel that contains electrical equipment or operating parts |
| CN201182854Y (en) * | 2008-04-08 | 2009-01-21 | 王志民 | Flame-proof type high-multiple foam extinguishing device for coal mine |
| CN101701525A (en) * | 2009-10-23 | 2010-05-05 | 准格尔旗永智煤炭有限公司 | Fully automatic gas explosion proof equipment |
-
2013
- 2013-02-28 CN CN201310062687.7A patent/CN103114869B/en active Active
- 2013-04-19 WO PCT/CN2013/074456 patent/WO2014131231A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296401Y (en) * | 1996-10-19 | 1998-11-04 | 张文平 | Negative pressure dust trapping device for coal discharge outlet of discharge top coal hydraulic support |
| CN101021160A (en) * | 2007-03-05 | 2007-08-22 | 煤炭科学研究总院重庆分院 | High power inhibition foam for preventing and controlling coal self-ignition and generating device thereof |
| CN201401189Y (en) * | 2009-04-08 | 2010-02-10 | 煤炭科学研究总院重庆研究院 | Mine automatic powder spraying explosion-suppressing device |
| CN201818322U (en) * | 2010-10-20 | 2011-05-04 | 江都市引江矿业设备有限公司 | Gas-compressing, deslagging, drilling and dust remover for coal mine downhole |
| CN202017512U (en) * | 2011-03-15 | 2011-10-26 | 邹城兖矿泰德工贸有限公司 | Mechanical air water spraying device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103114869A (en) | 2013-05-22 |
| WO2014131231A1 (en) | 2014-09-04 |
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