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Experiment device and method for simulating gas-coal dust explosion in underworkings of coal mine

A technology for underground tunnels and gas explosions, which is applied in the direction of explosive materials, etc., to improve safety awareness and enrich teaching effects

Inactive Publication Date: 2016-05-04
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To sum up, most scholars have used gas explosion experimental devices to carry out experimental research on the suppression of gas explosions, revealing the mechanism of gas explosions, etc., while ignoring the more terrible gas-coal dust explosions that can be caused by gas explosions. Research; the application of gas-coal dust explosion experimental device for gas-coal dust explosion related research is still blank, therefore, it is necessary to design an experimental device for simulating gas-coal dust explosion in coal mine underground roadway

Method used

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  • Experiment device and method for simulating gas-coal dust explosion in underworkings of coal mine
  • Experiment device and method for simulating gas-coal dust explosion in underworkings of coal mine

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specific Embodiment approach 1

[0036] Specific implementation method 1. Refer to figure 1 To specifically describe this embodiment, an experimental device for simulating gas-coal dust explosion in a coal mine underground tunnel described in this embodiment includes a high-energy ignition cabinet 1, a vacuum pump 2, a high-speed data collector 3, an explosion cavity 4, an ignition Electrode 5, booster pump 6, air compressor 7, high pressure gas storage cylinder 8, t powder chambers 9, solenoid valve 10, m pressure sensors 11, stop valve 12, flame sensor installation port 13, n flame sensors 14 , gas explosion diffusion pipeline 15, pressure sensor installation port 16, gas explosion diffusion branch 17, connecting pipe 18 and gas cylinder 19; n, m and t are all positive integers;

[0037]One end of the explosion chamber 4 is provided with an ignition electrode 5; the ignition signal input end of the ignition electrode 5 is connected to the ignition signal output end of the high-energy ignition cabinet 1; the...

specific Embodiment approach 2

[0050] Specific embodiment 2. This embodiment is a further description of the experimental device for simulating gas-coal dust explosion in coal mine underground tunnels described in Embodiment 1. In this embodiment, the explosion chamber 4 and the gas explosion diffusion pipeline The junction of 15 is provided with a Teflon film, which is used for sealing.

[0051] The explosion cavity and the gas explosion diffusion pipeline are separated by a holder equipped with a PTFE film to ensure the relative sealing of the explosion cavity and the configuration requirements of a certain concentration of gas in the explosion cavity.

specific Embodiment approach 3

[0052] Specific embodiment 3. This embodiment is a further description of the experimental device for simulating gas-coal dust explosion in underground tunnels of coal mines described in Embodiment 1. In this embodiment,

[0053] The high-energy ignition cabinet 1 includes a display unit 1-1, a processing unit 1-2, an ignition control unit 1-3, a storage unit 1-4, a collection unit 1-5 and a control unit 1-6;

[0054] The acquisition units 1-5 are used to collect the pressure signal and the flame signal sent by the high-speed data collector 3;

[0055] The processing unit 1-2 is used to compare the pressure value in the explosion chamber 4 collected by the collection unit 1-5 with the external atmospheric pressure value, and input the comparison result to the display unit 1-1; it is also used to control the vacuum pump 2 to start , close, control solenoid valve 10 to open, close and control solenoid valve opening delay;

[0056] The display unit 1-1 is used to display the com...

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Abstract

The invention relates to an experiment device and method for simulating gas-coal dust explosion in underworkings of a coal mine, and belongs to the technical field of safety engineering of the coal mine. Requirements on the experiment device and method for the gas-coal dust explosion in the underworkings of the coal mine are met. Gas-coal dust is poured into an explosion cavity, and when a pressure value in the explosion cavity is equal to that of outside atmospheric pressure, a high-energy ignition cabinet controls an ignition electrode on the explosion cavity to ignite, so that the explosion experiment of the gas-coal dust is realized, and exploded gas and the like are diffused through a gas explosion diffusion pipeline and gas explosion diffusion branches; pressure sensors and flame sensors are used for monitoring the pressure and the flame in the gas explosion diffusion pipeline during explosion in a real-time manner, and transmitting pressure data and flame data to a high-speed data acquisition unit, and the pressure data and the flame data are saved in an industrial computer. The experiment device and method disclosed by the invention are suitable for observing gas explosion of the coal mine.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety engineering, and particularly relates to an experimental device and method for simulating gas-coal dust explosion in underground tunnels of coal mines. Background technique [0002] In coal mining, gas explosion has become one of the hidden dangers restricting the safety of coal mines. The occurrence of gas explosion accidents has brought huge losses to the life and property of the country and the people, and also has a great negative impact on the safety production of coal mines. Gas explosions can also cause more serious gas-coal dust explosions. Therefore, to carry out research on the characteristics and propagation mechanism of gas-coal dust explosion is conducive to solving the urgent safety production problems in coal mines and other industrial sectors, and has important practical significance for formulating technical measures to prevent, control and reduce explosion disasters. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/54
CPCG01N25/54
Inventor 吴强张保勇刘传海张强
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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