CN203287341U - Explosion experiment device for unevenly distributed methane gas - Google Patents
Explosion experiment device for unevenly distributed methane gas Download PDFInfo
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- CN203287341U CN203287341U CN2013203261061U CN201320326106U CN203287341U CN 203287341 U CN203287341 U CN 203287341U CN 2013203261061 U CN2013203261061 U CN 2013203261061U CN 201320326106 U CN201320326106 U CN 201320326106U CN 203287341 U CN203287341 U CN 203287341U
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- 238000004880 explosion Methods 0.000 title claims abstract description 68
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract description 22
- 238000002474 experimental method Methods 0.000 title abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 238000009826 distribution Methods 0.000 claims abstract description 23
- 238000004458 analytical method Methods 0.000 claims description 10
- 230000006854 communication Effects 0.000 claims description 9
- 238000010304 firing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 14
- 238000004088 simulation Methods 0.000 abstract description 6
- 238000011835 investigation Methods 0.000 abstract description 3
- 238000010191 image analysis Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 51
- 239000003245 coal Substances 0.000 description 10
- 239000000428 dust Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The utility model discloses an explosion experiment device for unevenly distributed methane gas. The explosion experiment device includes an explosion experiment pipeline, an ignition system, an automatic control system, a gas distribution instrument, a testing system, a schlieren system and a high-speed photography system. A plurality of simulation laboratories are arranged in the explosion experiment pipeline, the gas distribution instrument is utilized to complete filling of the methane gas with different concentrations into the different laboratories, and under mutual coordination of the ignition system, the testing system, the schlieren system and the high-speed photography system, so that an explosion process of the unevenly distributed methane gas in an underground roadway is simulated. The explosion experiment device has the advantages of real simulation process, accurate parameter measurement and complete image analysis, fully reveals a law of methane gas explosion, lays a foundation for setting explosion suppression measures, and has important guiding significance for cause investigation of underground methane gas explosion accidents, mine personal protection, disaster early warnings and emergency rescue.
Description
Technical field
The utility model relates to a kind of explosion experimental facility, and particularly a kind of gas uneven distribution explosion experimental facility, belong to the Coal Mining Technology field.
Background technology
In China, in the formation of primary energy, coal accounts for 70%, and wherein, approximately 95% coal production is that not only working condition is poor underground,, along with the process of exploitation, take methane as main a large amount of inflammable gas gas, also is accompanied.
Gas is a kind of flammable and explosive substance, after it mixes with air or oxygen and reaches finite concentration, but just has the characteristic of propagating burning, blast.In a single day gas run into the energy of bringing out of some strength, can burn, explode, the even larger detonation of destructive power.After coal mine gas from explosion, often cause ventilating system to be destroyed, distinguished and admirable disorder, toxic and harmful spreads, and continuous disaster accident even occurs, and brings great difficulty and harm for the later stage disaster relief work.Wherein, gas and dust explosion accident occurrence frequency is the highest, and the number of casualties is many, damaging range is wide, is a pernicious disaster accident of class that has than the great society influence power.According to statistics, between China's emphasis colliery 1983-1993, gas and dust explosion death by accident 1432 people, dead 2402 people of local mine, account for 83.5% of major accident death toll, and the gas and dust explosion accident has become the archenemy of Safety of Coal Mine Production.Take 1998 as example, all kinds of collieries, the whole nation are once in the above casualty accident of dead 3 people, and dead 2675 people of gas accident, account for 77.5% of dead sum, once in the above accident of dead 10 people, the shared ratio of the death toll that gas accident causes is up to 81.3%.Coal demand increased substantially in recent years, and coal mining enterprise's production scale increases, particularly serious gas and dust explosion Frequent Accidents.Since entering 21 century, 8 once dead hundred above accidents of people successively occur in China's coal-mine, wherein have 7 to be the gas and dust explosion accident.The gas and dust explosion accident has been brought massive losses to China's economy.
Characteristics of fire damp explosion accident are: gas skewness in tunnel, place, quick-fried source position gas density is in the explosion limits scope, and the gas density of the quick-fried source of distance certain distance is not in the explosion limits scope, but the elevator due to explosion wave, tunnel gas density distribution can change a lot, and makes gas density gas explosion not occur the tunnel in the explosion limits scope yet.Therefore, be necessary the gas explosion dynamic communication rule of tunnel gas density skewness is studied, so, design a kind of gas uneven distribution explosion experimental facility and want with regard to becoming the utility model the problem that solves.
Summary of the invention
In view of above-mentioned existing situation, the utility model aims to provide a kind of experimental provision of gas explosion can effectively imitate and simulate coal mine roadway gas uneven distribution the time,, to realize the test to coal mine roadway gas explosion situation, for further disclosing the gas explosion rule and formulating anti-datonation-inhibition measure, lay the foundation.
The utility model is achieved through the following technical solutions:
Gas uneven distribution explosion experimental facility, comprise explosion test pipeline, firing system, automatic control system, distributing instrument, test macro, schlieren system and high-speed photography system.The explosion test pipeline is divided into two or more laboratories, and each laboratory is provided with air distribution hole; Described explosion test pipeline is provided with glass vision panel; Be provided with quick-acting closure between described laboratory, at one end the inwall in laboratory is provided with a plurality of fixed mounts.Firing system comprises interconnective controller and spark plug, and spark plug is fixed on fixed mount in laboratory.Automatic control system comprises master controller, vent valve, vacuum pump, vacuum meter and air compressor, and vent valve and air compressor correspondence are connected to the two ends of explosion test pipeline.Vacuum pump and vacuum meter are connected on the explosion test pipeline.Master controller respectively with quick-acting closure, controller, vent valve, vacuum pump and air compressor signal communication.Distributing instrument can correspondence be connected on air distribution hole.Test macro comprises Data Dynamic analysis processor, pressure transducer, temperature sensor and flame sensor, pressure transducer, temperature sensor and flame sensor are separately fixed on laboratory to be measured, and respectively with Data Dynamic analysis processor signal communication.Schlieren system and high-speed photography system match, and corresponding with glass vision panel.
Described explosion test pipeline is square tube.
gas uneven distribution explosion experimental facility described in the utility model, by a plurality of simulation laboratories are set in the explosion test pipeline, utilize distributing instrument to complete pouring into of the indoor variable concentrations methane gas of different experiments, and at firing system, test macro, the mutual coordination of schlieren system and high-speed photography system, under cooperation, complete inhomogeneous Gas Distribution blast process in the simulation underworkings, not only simulation process is true, reliably, simple to operate, convenient, and pressure in blast process, temperature and flame detecting carry out automatically, existing design parameter is measured, graphical analysis is arranged again, relatively, can fully disclose inhomogeneous Gas Distribution blast process, for the research of gas explosion rule with formulate anti-datonation-inhibition measure and lay a good foundation, to fire damp explosion accident causal investigation, the mine personal protection, disaster alarm and emergency management and rescue have important directive significance.
Description of drawings
Fig. 1 is structural representation block diagram of the present utility model.
Embodiment
The fundamental purpose of this experimental provision is: the rule that during simulation test coal mine roadway gas uneven distribution, gas explosion is propagated lays the foundation for further disclosing the gas explosion rule and formulating anti-datonation-inhibition measure.
Be further described below in conjunction with 1 pair of the utility model of accompanying drawing:
Gas uneven distribution explosion experimental facility described in the utility model, comprise explosion test pipeline 20, firing system, automatic control system, distributing instrument 1, test macro, schlieren system 2 and high-speed photography system 3.Wherein, explosion test pipeline 20 provides safe lab space and the experiment structure of rationally observing for the simulated explosion process.Automatic control system is used for coordinating the work of all parts, guarantees that blast process carries out in order and reliably completes under automatically controlling.Test macro is responsible for blast process is carried out pressure, temperature and flame detecting, in time completes the relevant information collection.3 images to instant of detonation of schlieren system 2 and high-speed photography system and aerodynamic force change and carry out record, for follow-up further investigation provides foundation.
In the present embodiment, explosion test pipeline 20 is the square tube of a steel, and square tube is provided with glass vision panel 11, cuts apart in square tube five laboratories 19 are arranged, and each laboratory 19 is provided with air distribution hole 12.For ease of forming five independent experiment spaces of relative sealing, between each laboratory 19, quick-acting closure 6 also is installed, the opening and closing of quick-acting closure 6 can form mutually ganging up or each self-isolation between each laboratory 19.Wherein,, for ease of the mounting points ignition system, at one end also be provided with 18, four fixed mounts 18 of four fixed mounts on the inwall in laboratory firing system is lighted a fire in different positions, simulate the during mine gas explosion of different ignition locations, for fully analyzing and study gas explosion, provide convenience.
Firing system comprises interconnective controller 14 and spark plug 13, and spark plug 13 can be fixed on the interior different fixed mount 18 in laboratory 19 as required, and controller 14 is controlled spark plug 13 and completed ignition process.
Automatic control system comprises master controller 17, vent valve 5, vacuum pump 16, vacuum meter 4 and air compressor 15, master controller 17 respectively with quick-acting closure 6, controller 14, vent valve 5, vacuum pump 16 and air compressor 15 signal communication, and control and coordinate each component working.Wherein, vent valve 5 and air compressor 15 correspondences are connected to the two ends of explosion test pipeline 20, by cooperatively interacting of vent valve 5 and air compressor 15, can be effectively the residual gas in blast after-explosion experimental channel 20 be discharged, for next experimentation ready.Vacuum pump 16 and vacuum meter 4 are connected on explosion test pipeline 20, and vacuum pump 16 can carry out evacuation to explosion test pipeline 20 to be processed, and, for experimentation provides clean environment, guarantees the experiment accuracy.
Distributing instrument 1 can corresponding be connected on the air distribution hole 12 in each laboratory, by corresponding pipe control on distributing instrument 1, with gas and air proportion preparation, form the concentration that needs and be circulated in different laboratory 19, simulate the blast process of gas under the variable concentrations state.
Test macro comprises Data Dynamic analysis processor 10, pressure transducer 8, temperature sensor 7 and flame sensor 9.Pressure transducer 8, temperature sensor 7 and flame sensor 9 are fixed on the measured hole in laboratory 19 to be measured, and respectively with Data Dynamic analysis processor 10 signal communication.
Schlieren system 2 and high-speed photography system 3 match, schlieren system 2 is corresponding with the glass vision panel 11 on square tube, so that the aerodynamic force in the collection during mine gas explosion in laboratory 19 changes, high speed video system 3 records at any time and changes image, to realize the omnidistance record of blast process, for subsequent analysis, research provide foundation.
During concrete experiment, at first, spark plug 13 is fixed on the laboratory fixed mount 18 of position to be measured, each instrument and circuit connect respectively, make each test macro, schlieren system 2 and high-speed photography system 3 be in normal operating conditions; Then, controlling vacuum pumps 16 by master controller 17 will vacuumize in explosion test pipeline 20, controls quick-acting closure 6 closures after exhausting vacuum, makes five laboratories 19 relatively independent and form sealing state; Then, be filled in five laboratories 19 to be measured with the methane gas correspondence of distributing instrument 1 configuration variable concentrations; Then, drive spark plug 13 igniting with the controller 14 that master controller 17 is controlled in automatic ignition system, ignite the methane gas in laboratory 19, simultaneously, controlling quick-acting closure 6 opens, make that blast and communication process are interior in five laboratories 19 carries out simultaneously, test macro, schlieren system 2 and high-speed photography system 3 carry out parameter acquisition and image taking to blast, communication process respectively, the parameter that gathers is pooled in Data Dynamic analysis processor 10, and uneven distribution gas explosion experiment and data acquisition are completed; Finally, open vent valve 5 and the interior residual gas of air compressor 15 discharge lines, after arranging experimental provision, for next experimentation is prepared.So far, an experimentation is completed.
Certainly, according to the research needs, above-mentioned during mine gas explosion can carry out many groups, and to analyze the impact on blast process of different gas densities and different blast starting point, thereby final analysis draws uneven distribution gas explosion rule, for datonation-inhibition measure lays the foundation.
Claims (2)
1. gas uneven distribution explosion experimental facility, is characterized in that, comprises explosion test pipeline, firing system, automatic control system, distributing instrument, test macro, schlieren system and high-speed photography system;
Described explosion test pipeline is divided into two or more laboratories, and each laboratory is provided with air distribution hole; Described explosion test pipeline is provided with glass vision panel; Be provided with quick-acting closure between described laboratory, at one end the inwall in laboratory is provided with a plurality of fixed mounts;
Described firing system comprises interconnective controller and spark plug, and spark plug is fixed on fixed mount in laboratory;
Described automatic control system comprises master controller, vent valve, vacuum pump, vacuum meter and air compressor, and described vent valve and air compressor correspondence are connected to the two ends of explosion test pipeline; Described vacuum pump and vacuum meter are connected on the explosion test pipeline; Described master controller respectively with quick-acting closure, controller, vent valve, vacuum pump and air compressor signal communication;
Described distributing instrument can correspondence be connected on air distribution hole;
Described test macro comprises Data Dynamic analysis processor, pressure transducer, temperature sensor and flame sensor; Described pressure transducer, temperature sensor and flame sensor are separately fixed on laboratory to be measured, and respectively with Data Dynamic analysis processor signal communication;
Described schlieren system and high-speed photography system match, and corresponding with glass vision panel.
2. gas uneven distribution explosion experimental facility according to claim 1, is characterized in that, described explosion test pipeline is square tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203261061U CN203287341U (en) | 2013-06-07 | 2013-06-07 | Explosion experiment device for unevenly distributed methane gas |
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| CN2013203261061U CN203287341U (en) | 2013-06-07 | 2013-06-07 | Explosion experiment device for unevenly distributed methane gas |
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| CN103743638A (en) * | 2014-01-06 | 2014-04-23 | 安徽理工大学 | Simulated composite loading device for explosive wave |
| CN104198230A (en) * | 2014-09-18 | 2014-12-10 | 中煤科工集团重庆研究院有限公司 | Real-time explosive gas collecting device |
| CN105248296A (en) * | 2015-11-24 | 2016-01-20 | 华北理工大学 | Gas explosion animal experiment device |
| CN105548254A (en) * | 2016-01-16 | 2016-05-04 | 黑龙江科技大学 | Experiment device and method for simulating gas-coal dust explosion in underworkings of coal mine |
| CN106198086A (en) * | 2016-08-24 | 2016-12-07 | 安徽理工大学 | A kind of experimental system of coal mine gas from explosion baffling device |
| CN106370783A (en) * | 2016-08-29 | 2017-02-01 | 中煤科工集团重庆研究院有限公司 | Regular packing explosion suppression fire-retardant performance test system |
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2013
- 2013-06-07 CN CN2013203261061U patent/CN203287341U/en not_active Expired - Fee Related
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| CN106198086A (en) * | 2016-08-24 | 2016-12-07 | 安徽理工大学 | A kind of experimental system of coal mine gas from explosion baffling device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |