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Gas-containing coal body adsorption-desorption-seepage experimental system and method under high temperature and high pressure

A high temperature and high pressure, adsorption and desorption technology, applied in the direction of analysis materials, instruments, etc., can solve the problems of the adsorption-desorption-seepage law and coupling mechanism is not clear, lack of experimental system, etc. The effect of less impurities

Pending Publication Date: 2018-10-09
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the adsorption-desorption-seepage law and coupling mechanism of gas-containing coal bodies under high temperature and high pressure conditions are still not clear, and related experimental systems are relatively lacking.

Method used

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  • Gas-containing coal body adsorption-desorption-seepage experimental system and method under high temperature and high pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An experimental system and method for adsorption, desorption and seepage of gas-containing coal under high temperature and high pressure. ) (25), acquisition card (26), computer acquisition system (15) (27), temperature control system (28), servo hydraulic control system (33), precision flowmeter (11) (30), pressure gauge and valve and other components. It is characterized in that: the gas bottle (1) is connected with the valve (3) and the pressure gauge one (4) through the pressure reducing valve one (2); the helium gas bottle (8) is connected through the pressure reducing valve two (7) ) is connected with valve (6) and pressure gauge two (5); the vacuum pump (10) is externally connected with vacuum valve (9) and precision flowmeter (11) and connected with high temperature and high pressure box (20) through pipelines; The high-temperature and high-pressure box displacement sensor (24) (25) is connected to the computer acquisition system (27) through the acquisition ca...

Embodiment 2

[0019] According to the embodiment 1, a gas-containing coal body adsorption and desorption seepage experimental system and method under high temperature and high pressure is characterized in that: the tube between the gas bottle (1) and the pressure gauge one (4) A pressure reducing valve (2) is installed on the road to control the gas pressure during the experiment; a pressure reducing valve (2) is installed on the pipeline between the helium cylinder (8) and the pressure gauge (5). (7) Control the helium pressure during the experiment through the pressure reducing valve 2; the inner wall of the high temperature and high pressure box (20) is equipped with a circle of nanometer heating layer (27), and the experimental coal sample (23) is fixed on the coal sample Holder (22); the upper and lower ends of the coal sample holder are respectively equipped with a porous plate (21); the upper part of the porous plate is a hydraulic cylinder (19) with a piston inside.

Embodiment 3

[0021]According to the embodiment 1, a gas-containing coal adsorption and desorption seepage experimental system and method under high temperature and high pressure is characterized in that: the servo hydraulic control system (33) includes a hydraulic pump (12) (16), a computer ( 15) and the booster pump (14) (18); the hydraulic pump (12) is connected to the pipeline and the valve (13) to provide axial pressure through the booster pump (14) and the hydraulic cylinder (19); the The hydraulic pump (16) is connected to the pipeline and the valve (17) to provide confining pressure through the booster pump (18) and the high temperature and high pressure box (20); the hydraulic pump is connected to the computer acquisition system (15) through the data line, so The computer acquisition system (15) described above is used to intelligently and fully automatically regulate the axial pressure and confining pressure strength of the experimental device.

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Abstract

The invention discloses a gas-containing coal body adsorption-desorption-seepage experimental system and method under high temperature and high pressure. The experimental system disclosed by the invention is mainly composed of a gas bottle, a helium bottle, a vacuum pump, a high-temperature high-pressure tank, a displacement sensor, an acquisition card, a computer acquisition system, a temperaturecontrol system, a servo-hydraulic control system, a precision flowmeter, a pressure gage, valves and other components. The experimental system is characterized in that the gas bottle and the helium bottle are connected with the high-temperature high-pressure tank by virtue of a reducing valve and a valve; the vacuum pump is externally connected with a vacuum valve and connected with the high-temperature high pressure tank by virtue of a pipeline; the high-temperature high-pressure tank is externally connected with the displacement sensor, the temperature control system and the servo-hydrauliccontrol system and connected with the computer acquisition system; and the servo-hydraulic control system comprises a hydraulic pump, a booster pump and the like, is capable of realizing independentloading of axial pressure and confining pressure of deep mining coal samples. The experimental system disclosed by the invention is mainly applied to gas-containing coal body adsorption-desorption-seepage experiments under high temperature and high pressure coal mining conditions, and is an advanced, reliable and accurate experimental means.

Description

technical field [0001] The invention relates to the technical field of adsorption, desorption and seepage of gas under the complex environment of deep mining of coal mines, in particular to an experimental system and method for adsorption, desorption and seepage of gas-containing coal under high temperature and high pressure. Background technique [0002] In recent years, my country's coal mines have been excavated deeper and deeper, and the problems faced by the development of deep coal resources have become more and more serious. The high-temperature and high-pressure mining environment has become more and more obvious. - The seepage coupling mechanism is the most basic scientific issue of gas prevention and control, and the study of a series of changes such as gas adsorption-desorption-seepage in the coal rock body and heat transfer of the coal body will directly determine the gas gushing and outburst of the coal mining face Accidents happen. [0003] Accurately grasping t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/04G01N7/10
CPCG01N7/04G01N7/10
Inventor 刘佳佳高建良张学博
Owner HENAN POLYTECHNIC UNIV
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