CN104422713A - Underground coal mine gas explosion reaction test device - Google Patents
Underground coal mine gas explosion reaction test device Download PDFInfo
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- CN104422713A CN104422713A CN201310408041.XA CN201310408041A CN104422713A CN 104422713 A CN104422713 A CN 104422713A CN 201310408041 A CN201310408041 A CN 201310408041A CN 104422713 A CN104422713 A CN 104422713A
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Abstract
The invention relates to an underground coal mine gas explosion reaction test device which comprises a controller, an explosion reaction tank, an explosion gas source connected with the explosion reaction tank, and a compressed air source, wherein the explosion reaction tank is internally provided with an ignition electrode and a pressure sensor; the ignition electrode and the pressure sensor are connected with the controller; the device also comprises a vacuum pump and an air compressor which are connected with the explosion reaction tank. After the underground coal mine gas explosion reaction test device is used, the basic parameters such as explosion limit, explosion pressure, explosion pressure rise speed, explosion pressure peak time and the like of underground explosive gas in a macroscopic static state and a turbulence state are simulated, and the influence of turbulence to gas explosion characteristics is analyzed; therefore, a certain guidance is provided for effectively controlling mine gas explosion hazard.
Description
Technical field
The invention belongs to coal industry field field, relate to a kind of gas explosion in underground coal mines reaction test device.
Background technology
Gas explosion in underground coal mines accident is one of the most serious mine disaster, for prevention and corntrol mine gas explosion, Chinese scholars carries out excessive quantity research to gas explosion characteristic, and mostly the achievement in research obtained is based on the methane gas blast under macroscopical stationary state.But a large amount of gas of underground coal mine concentrates ejection or when gushing out, be discharged into roadway distinguished and admirable in, due to concentration gradient and airflow fluctuating act on distinguished and admirable in diffusion dilution gradually, flowed by distinguished and admirable carrying.So research flowing gas explosion issues has important actual application value.The pipe outlet pressure that H.W.Emmons etc. exploded under calculating and intending dynamic condition; Chen Aiping to have studied in pipeline the effect of flowing gas mobile obstacle and flow to the impact of blast characteristics; Wang Baoxing have studied the effect of ventilating to strong gas explosion.The domestic and international static state to gas explosion, Research on Dynamic Characteristic all achieve many achievements.Turbulent flow is the modal flow state of mine gas, especially in mine gas explosion, is subject to the induction of the factors such as barrier in tunnel, tunnel intersection and change in size can produce strong turbulent flow, bursting strength can be impelled to increase due to explosive shock wave.In prior art to the simulation of fire damp gas burst not accurately comprehensively, the actual influence of blast to down-hole can not be reflected really.
Summary of the invention
Accurately comprehensively can not simulate the technological deficiency of coal mine underground gas explosive event for solving prior art, the invention provides a kind of gas explosion in underground coal mines reaction test device.
Gas explosion in underground coal mines reaction test device, comprise controller, explosive reaction tank and with the tank connected blast source of the gas of explosive reaction, compressed air gas source; There are spark electrode and pressure transducer in described explosive reaction tank inside, and described spark electrode is all connected with controller with pressure transducer, also comprises tank connected vacuum pump and air compressor machine with explosive reaction.
Preferably, the digital pressure gauge be connected with blast source of the gas is also comprised.
Preferably, also comprise gas-holder, described gas-holder pipeline is connected between explosive reaction tank and compressed air gas source.
Further, described gas-holder is also provided with on the connecting tube of explosive reaction tank the solenoid valve be connected with controller.
Further, described gas-holder is also provided with tensimeter.
Preferably, described controller is microcomputer.
Gas explosion in underground coal mines reaction test device of the present invention, the basic parameter such as the explosion limits of explosion hazard gases under the static and turbulent flow two states of macroscopic view, explosion pressure, explosion pressure climbing speed and detonation pressure peak time under simulation well, analyze turbulent flow to the impact of gas burst characteristic, can be effectively control mine gas explosion disaster and certain guidance is provided.
Accompanying drawing explanation
Fig. 1 illustrates the present invention's embodiment schematic diagram.
Embodiment
Below provide the present invention's embodiment.
Gas explosion in underground coal mines reaction test device, comprise controller, explosive reaction tank and with the tank connected blast source of the gas of explosive reaction, compressed air gas source; There are spark electrode and pressure transducer in described explosive reaction tank inside, and described spark electrode is all connected with controller with pressure transducer, also comprises tank connected vacuum pump and air compressor machine with explosive reaction.
First be filled with air and explosive gas in proportion by explosive reaction tank, controller controls spark electrode and realizes sparking, tests explosion pressure by pressure transducer.Vacuum pump and used for air compressor in before testing afterwards to vacuumizing in explosive reaction tank and pressurizeing.
Preferably, the digital pressure gauge be connected with blast source of the gas is also comprised.For testing the pressure of blast source of the gas.
Preferably, also comprise gas-holder, described gas-holder pipeline is connected between explosive reaction tank and compressed air gas source.The effect of gas-holder is isolated at compressed gas source and explosive reaction tank, avoids shock wave impact compress source of the gas.Further, described gas-holder is also provided with on the connecting tube of explosive reaction tank the solenoid valve be connected with controller.Controller is facilitated to control explosive reaction tank insufflation gas.Described gas-holder is also provided with tensimeter.Controller can be the data processing equipment that microcomputer etc. has input and display device.
Fig. 1 provides the present invention's embodiment, explosive reaction tank volume about 20 L, maximum inner diameter 30 cm in the present embodiment, high 35 cm in inner space; Pressure transducer response time 1 ms, range is 0 ~ 1 MPa, and precision is 0.3%F.S; Precision digital pressure gauge range is 0 ~ ± 101.3 kPa, and resolution is 0.01 kPa; Volume of gas storage tank 0.6 L; Air tank pressure gauge range is 0 ~ 4 MPa, and precision is 0.4; Incendiary source is the electric initiating cartridge ignition tool that energy is about erg-ten, and ignition location is at retort center.In test process, the release of gas-holder pressure-air, igniting and explosion pressure measurement are controlled by controller by computer.After solenoid valve is opened, gas-holder pressure-air is filled with retort, and after the time delay that experience is preset, spark electrode is automatically ignited igniter and detonated, pressure transducer carries out data acquisition (acquisition time 0 ~ 500 ms) simultaneously, and is saved to computing machine.
Above-describedly be only the preferred embodiments of the present invention; described embodiment is also not used to limit scope of patent protection of the present invention; therefore the equivalent structure that every utilization instructions of the present invention and accompanying drawing content are done changes, and in like manner all should be included in protection scope of the present invention.
Claims (6)
1. gas explosion in underground coal mines reaction test device, is characterized in that, comprise controller, explosive reaction tank and with the tank connected blast source of the gas of explosive reaction, compressed air gas source; There are spark electrode and pressure transducer in described explosive reaction tank inside, and described spark electrode is all connected with controller with pressure transducer, also comprises tank connected vacuum pump and air compressor machine with explosive reaction.
2. a gas explosion in underground coal mines reaction test device as claimed in claim 1, is characterized in that, also comprises the digital pressure gauge be connected with blast source of the gas.
3. a gas explosion in underground coal mines reaction test device as claimed in claim 1, it is characterized in that, also comprise gas-holder, described gas-holder pipeline is connected between explosive reaction tank and compressed air gas source.
4. a gas explosion in underground coal mines reaction test device as claimed in claim 3, it is characterized in that, described gas-holder is also provided with on the connecting tube of explosive reaction tank the solenoid valve be connected with controller.
5. a gas explosion in underground coal mines reaction test device as claimed in claim 3, is characterized in that, described gas-holder is also provided with tensimeter.
6. a gas explosion in underground coal mines reaction test device as claimed in claim 1, it is characterized in that, described controller is microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408041.XA CN104422713A (en) | 2013-09-10 | 2013-09-10 | Underground coal mine gas explosion reaction test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408041.XA CN104422713A (en) | 2013-09-10 | 2013-09-10 | Underground coal mine gas explosion reaction test device |
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| CN104422713A true CN104422713A (en) | 2015-03-18 |
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| CN201310408041.XA Pending CN104422713A (en) | 2013-09-10 | 2013-09-10 | Underground coal mine gas explosion reaction test device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352825A (en) * | 2015-11-27 | 2016-02-24 | 中国人民解放军理工大学 | Test device for closed tank dynamic response under action of combustible gas explosion |
| 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 |
| CN106053532A (en) * | 2016-05-06 | 2016-10-26 | 东北大学 | A test device for researching influences of smoldering dust on dust explosion and a method therefor |
| CN106841300A (en) * | 2017-03-24 | 2017-06-13 | 上海化工研究院有限公司 | A kind of Combined industry dust explosion analog demenstration system |
| CN108801816A (en) * | 2017-04-28 | 2018-11-13 | 中国人民解放军理工大学 | A kind of big equivalent underground shallow buried explosion effect simulator |
| CN110174439A (en) * | 2019-04-17 | 2019-08-27 | 合肥工业大学 | A kind of interior experimental provision for generating hydrogen longitudinal direction concentration gradient of enclosure |
| CN112415052A (en) * | 2020-11-04 | 2021-02-26 | 中国矿业大学 | Experimental simulation device and method for high-temperature oxidation characteristic and ignition/explosion gas of coal |
| CN112710447A (en) * | 2020-12-29 | 2021-04-27 | 内蒙古黄陶勒盖煤炭有限责任公司 | Be used for colliery safety protection support evaluation system in pit |
-
2013
- 2013-09-10 CN CN201310408041.XA patent/CN104422713A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352825A (en) * | 2015-11-27 | 2016-02-24 | 中国人民解放军理工大学 | Test device for closed tank dynamic response under action of combustible gas explosion |
| 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 |
| CN106053532A (en) * | 2016-05-06 | 2016-10-26 | 东北大学 | A test device for researching influences of smoldering dust on dust explosion and a method therefor |
| CN106053532B (en) * | 2016-05-06 | 2018-08-28 | 东北大学 | It is a kind of research smoldering dust on dust explosion influence property test device and method |
| CN106841300A (en) * | 2017-03-24 | 2017-06-13 | 上海化工研究院有限公司 | A kind of Combined industry dust explosion analog demenstration system |
| CN106841300B (en) * | 2017-03-24 | 2020-04-28 | 上海化工研究院有限公司 | Combined industrial dust explosion simulation demonstration system |
| CN108801816B (en) * | 2017-04-28 | 2023-08-18 | 中国人民解放军理工大学 | Large-equivalent underground shallow-buried explosion effect simulation device |
| CN108801816A (en) * | 2017-04-28 | 2018-11-13 | 中国人民解放军理工大学 | A kind of big equivalent underground shallow buried explosion effect simulator |
| CN110174439A (en) * | 2019-04-17 | 2019-08-27 | 合肥工业大学 | A kind of interior experimental provision for generating hydrogen longitudinal direction concentration gradient of enclosure |
| CN110174439B (en) * | 2019-04-17 | 2022-01-11 | 合肥工业大学 | Experimental device for generate hydrogen longitudinal concentration gradient in closed cabin |
| CN112415052A (en) * | 2020-11-04 | 2021-02-26 | 中国矿业大学 | Experimental simulation device and method for high-temperature oxidation characteristic and ignition/explosion gas of coal |
| CN112710447A (en) * | 2020-12-29 | 2021-04-27 | 内蒙古黄陶勒盖煤炭有限责任公司 | Be used for colliery safety protection support evaluation system in pit |
| CN112710447B (en) * | 2020-12-29 | 2023-07-25 | 内蒙古黄陶勒盖煤炭有限责任公司 | Underground coal mine safety protection support evaluation system |
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Application publication date: 20150318 |