Pressure chamber for coal rock sample gas seepage test

A pressure chamber and coal-rock sample technology, applied in the field of coal-rock sample gas seepage test equipment, can solve the problems that the real underground conditions of coal-rock samples cannot be truly simulated, and the test conditions of the test piece box are limited, so as to achieve high realistic guiding significance and reliable Guaranteed effect

Active Publication Date: 2019-12-03
CHONGQING UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, in the laboratory, the test piece box is commonly used to simulate the seepage test of various gases in the coal rock sample (collectively referred to as "coal sample" and "rock sample"), but the test conditions of the existing test piece box are still relatively low. Limited, it is impossible to truly simulate the real underground conditions of coal and rock samples under the influence of factors such as different pressures, different temperatures, and underground waves

Method used

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  • Pressure chamber for coal rock sample gas seepage test
  • Pressure chamber for coal rock sample gas seepage test

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Embodiment Construction

[0013] Below by embodiment and in conjunction with accompanying drawing, the present invention will be further described:

[0014] combine figure 1 , figure 2 As shown, a pressure chamber for coal-rock sample gas seepage test is mainly composed of a round steel cylinder 1, a circumferential pressure transmission sleeve 2, a T-shaped head 3, a PEEK sleeve 4, a conical steel sleeve 5, a right piston sleeve 6, Right first pressure sleeve 7, right second pressure sleeve 8, left first pressure sleeve 9, left second pressure sleeve 10, ring pad 11, sealing retaining ring 12, support foot 13, pressure sensor 14, high pressure valve 15, A carbon dioxide gas source 16, a desiccant 17, a gas flow meter 18, a vibrator 19, and an ultrasonic generator 20 are composed.

[0015] The annular pressure transmission sleeve 2 is placed in the round steel cylinder 1 , and the outer diameter of the annular pressure transmission sleeve 2 is smaller than the inner diameter of the round steel cylin...

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Abstract

The invention discloses a pressure chamber for a coal rock sample gas seepage test. The pressure chamber comprises a round steel cylinder, an annular pressure transmission sleeve, T-shaped end sockets, a PEEK sleeve, a conical steel sleeve, a right piston sleeve, a right first pressing sleeve, a right second pressing sleeve, a left first pressing sleeve and a left second pressing sleeve. A cylindrical coal rock sample cavity is formed between the annular pressure transmission sleeve and the two T-shaped end sockets; and an annular pressure applying cavity is formed between the annular pressuretransmission sleeve and the round steel cylinder. Two annular high-pressure liquid connectors are arranged on the side wall of the round steel cylinder; two axial high-pressure liquid connectors arearranged on the side wall of the right second pressing sleeve; and each of the two T-shaped end sockets is provided with a seepage high-pressure gas and resistivity tester PEEK insulation connector sharing connector. Therefore, the gas seepage conditions of the coal rock sample under underground real conditions of different pressures, different temperatures, underground waves and the like can be simulated truly, so that the test result has the higher practical guiding significance and the reliable guarantee is provided for safe mining of coal rock strata.

Description

technical field [0001] The invention belongs to the technical field of gas seepage test equipment for coal and rock samples, and in particular relates to a pressure chamber structure for performing gas seepage tests on coal and rock samples. Background technique [0002] Gas percolation refers to the flow of gas in porous media. The fundamental difference between gas percolation and liquid percolation is that gas has greater compressibility, and in the percolation process, the volume changes with temperature and pressure. At present, in the laboratory, the test piece box is commonly used to simulate the seepage test of various gases in the coal rock sample (collectively referred to as "coal sample" and "rock sample"), but the test conditions of the existing test piece box are still relatively low. Limited, it is impossible to truly simulate the real underground conditions of coal and rock samples under the influence of factors such as different pressures, different temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01M3/32
CPCG01M3/3272G01N15/0826
Inventor 张东明王浩郑东张邦安蒋志刚
Owner CHONGQING UNIV
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