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Whole-range automatic testing method and device for gas desorbing speed of coal sample

A fully automatic and testing method technology, applied to the analysis of materials and instruments, can solve the problems of inaccurate coal sample gas desorption speed and desorption volume, loss of reliable basic parameters for gas control, unfavorable analysis of coal sample gas desorption law, etc., to achieve Extensive applicability and promotion and application value, visual graphing, and convenient testing

Inactive Publication Date: 2012-07-25
HENAN POLYTECHNIC UNIV
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

This method is not only cumbersome, but requires a lot of personnel during the experiment, and reading the scale on the measuring tube while looking at the time will not only cause time errors, but also cause reading errors due to man-made and scale reasons. If there are errors in each reading , the measured coal sample gas desorption speed and desorption amount will be inaccurate, which is not conducive to the analysis of coal sample gas desorption law, and will lose reliable basic parameters for guiding on-site gas control; at the same time, the gas desorption process of a coal sample can be more than 2 hours, and the data The process of reading and recording is done by the experimenter, which will waste a lot of time and energy

Method used

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  • Whole-range automatic testing method and device for gas desorbing speed of coal sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Implementation of Gas Desorption of Laboratory Coal Samples

[0021] (1) Put the liquid into the desorption volume tube 16, then put the desorption volume tube upright, connect the air guide rubber tube 6, connect the guide tube 19, close the control valves 7 and 20, connect the data transmission line 26, and debug the electronic Balance 25, start intelligent module 24.

[0022] (2) self-made coal sample, the coal sample particle size is determined according to the research purpose, the prepared coal sample is put into the coal sample tank 3, the coal sample tank cover 4 is tightened immediately, the coal sample tank 3 is fixed on the fixed seat 1, and the The gas guide needle 5 is inserted into the pressure pad on the top of the coal sample tank cover.

[0023] (3) Open the control valves 7 and 20 at the same time, and the intelligent module 24 automatically tests and monitors the coal sample gas desorption process in the whole process. Automatic recording...

Embodiment 2

[0024] Example 2: Coal core gas desorption by underground drilling in coal mines:

[0025] (1) Find a relatively flat place around the position where the coal core is drilled in the coal mine, put down the device, put the liquid into the desorption volume tube 16, then put the desorption volume tube upright, connect the gas guide rubber tube 6, and connect the guide The flow pipe 19 closes the control valves 7 and 20, connects the data transmission line 26, adjusts the electronic balance 25, and starts the intelligent module 24.

[0026] (2) Drill the coal core according to the predetermined coal seam position, connect it to the coal sample tank, immediately tighten the coal sample tank cover, insert the gas guide needle into the pressure pad on the upper part of the coal sample tank cover, and record the coal sample desorption and measurement at the same time. Sample exposure time T1.

[0027] (3) Open the control valves 7 and 20 at the same time, and the intelligent module ...

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Abstract

The invention relates to a whole-range automatic testing method and a whole-range automatic testing device for gas desorbing speed of a coal sample, which is reasonable in structure, simple and convenient for method, and accurate in measurement, and has visible data and imaging visualization. The device consists of a coal sample tank, a desorbing measuring pipe, a liquid collector and an intelligent module. The device is characterized in that the coal sample tank is connected with an air inlet pipe of the desorbing measuring pipe through a gas-guide tube; gas desorbed from the coal sample enters the desorbing measuring tube, so that liquid in the desorbing measuring tube is correspondingly discharged; the discharged liquid is collected by using the liquid collector; the mass variation in the liquid collector is monitored through an electronic scale in a whole-range manner, and the mass variation and time data are transmitted to the intelligent module and automatically recorded; and the mass variation is automatically converted to the volume variation according to a principle that m is equal to rho*v, namely the volume of the gas desorbed from the coal sample, so that the desorbing speed and the desorbing amount of the gas of the coal sample can be automatically obtained.

Description

technical field [0001] The method and device of the invention relate to the field of coal mine gas desorption, in particular to simple, automatic and accurate full automatic testing and recording of the gas desorption process. Background technique [0002] Gas is an accompanying product in the process of coal formation. As long as coal is mined, gas will appear. Gas is one of the important factors that endanger the safety of mine production and is also one of the most serious disasters in coal mines. According to statistics, 70% of coal mine production accidents in my country The above is caused by gas. Therefore, whether it is a production mine, a new mine or a reconstruction and expansion of a mine, it is necessary to know the gas content and distribution law in the coal seam. Gas content is an important basic parameter for gas control, and it is also an important basic basis for gas emission prediction and gas outburst prediction. Therefore, it is necessary to have a clea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/00
Inventor 潘荣锟余明高陈向军路长郑立刚黄丽慧褚廷湘晁江坤
Owner HENAN POLYTECHNIC UNIV
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