Gas-instant-desorption testing device and method
A gas and desorption technology, applied in the direction of analysis materials, instruments, etc., can solve the problem of not obtaining the instantaneous desorption characteristics of gas, and achieve the effect of reducing coal and gas outburst accidents, simple structure, and easy implementation
Inactive Publication Date: 2015-12-30
HENAN POLYTECHNIC UNIV
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Problems solved by technology
However, in the above outburst simulation, the gas instantaneous desorption characteristics were not obtained, and this characteristic has an important impact on coal and gas outburst
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[0015] The present invention will be further described below in conjunction with drawings and embodiments.
[0016] A gas instantaneous desorption test device of the present invention is composed of a coal sample container, an opening device, a gas pressure testing system, and a gas supply and discharge system.
[0017] The coal sample container includes a coal sample container cylinder 1, a first flange 2, a second flange 3, a first gasket 6, a first stud 13, and a first three-way joint connection head installation hole 15 , the first pressure sensor installation hole 16 , the first pressure gauge installation hole 17 , the second pressure sensor installation hole 18 , and the internal thread installation hole 48 . The cylinder material and thickness of the coal sample container meet the rigidity and strength requirements under the maximum test pressure. The outer surface of the cylinder at the first pressure sensor mounting hole 16 and the second pressure sensor mounting ho...
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The invention discloses a gas-instant-desorption testing device and method. The device comprises a coal sample container, an opening device, a gas pressure testing system and a gas supplying or discharging system. The coal sample container is used for storing testing pulverized coal, the opening device is used for instantaneously reducing the pressure of the coal sample container, the gas pressure testing system is used for recording the pressure of gas of the coal sample container and the pressure of gas of an isolation cavity of the opening device in real time, and the gas supplying or discharging system is used for supplying or discharging the gas of the coal sample container and the gas of the isolation cavity of the opening device. The method includes the following steps of 1, installing the opening device; 2, installing the gas supplying or discharging system; 3, installing the gas pressure testing system; 4, loading the pulverized coal, and closing a coal loading opening; 5, carrying out gas impermeability testing; 6, enabling pulverized coal gas to achieve adsorption balance; 7, carrying out pulverized coal gas desorption pressure testing. The device is reasonable in design, simple in structure, easy to implement and good in sealing performance, and brings convenience to data collecting; instant pressure reduction of the coal sample container is achieved through rupturing of a rupture disc, and an important means is provided for enabling the gas pressure change rule in the coal and gas outburst process to be clear.
Description
technical field [0001] The invention belongs to the field of coal mine safety production, and in particular relates to a gas instantaneous desorption test device and method. Background technique [0002] Coal and gas outburst (abbreviated as outburst) is an extremely complicated dynamic phenomenon in the process of coal mine production. It can suddenly eject a large amount of gas and crushed coal from the coal body to the roadway or stope in a very short period of time, forming a special-shaped cavity in the coal body, and causing a certain dynamic effect, such as pushing down the mine car, destroying bracket etc. When coal and gas protrude, pulverized coal may fill hundreds of meters of roadway, and the gas-powdered coal flow sometimes has a storm-like nature, and gas can run against the wind flow and fill thousands of meters of roadway. Therefore, coal and gas outburst is one of the serious disasters that threaten the safe production of coal mines and restricts the devel...
Claims
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Inventor 郭保华马擎李一哲郭文兵席可峰陈岩王龙王辰霖董航宇司凯李冰洋
Owner HENAN POLYTECHNIC UNIV