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Underground coal sample treating device and underground coal sample treating method for indirectly determining content of gas in coal seam

A coal seam gas and processing device technology, which is applied in the field of underground coal sample processing devices for indirect measurement of coal seam gas content, can solve the problems of low gas content measurement value and high gas content value, and avoid exposure to air oxidation and water loss Effect

Inactive Publication Date: 2016-11-23
NORTH CHINA INST OF SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

At present, when the indirect method is used to measure and calculate the gas adsorption capacity of coal samples, one of the coal samples used is a dry coal sample with all moisture removed, and the other is a balanced water coal sample or a water-saturated coal sample; among them, the dry coal sample is used to The measured gas content value will be high, and the use of balanced water coal samples or saturated water coal samples will make the gas content measurement value low

Method used

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  • Underground coal sample treating device and underground coal sample treating method for indirectly determining content of gas in coal seam

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Embodiment Construction

[0014] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0015] like figure 1 As shown in the figure, the device of the present invention proposes an underground coal sample processing device for indirect determination of coal seam gas content, which comprises a tank body 1 with one end open and one end closed, and a sealing cover 2 is detachably connected to the open end of the tank body 1 , the sealing cover 2 is provided with three ventilation holes 3 communicating with the interior of the tank body 1 . The three vent holes 3 are respectively connected to the methane bottle 5 , the vacuum pump 6 and the portable tile detector 7 through the pipeline 4 .

[0016] In the above embodiment, valves 8 are respectively provided on the three pipelines 4 .

[0017] In the above embodiment, a gasket 9 is fastened to the bottom of the sealing cover 2, and the gasket 9 can be made of cotton for filtering gas.

[001...

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Abstract

The invention provides an underground coal sample processing device and method for indirect determination of coal seam gas content, wherein the processing device includes a tank with one end open and one end closed, and a sealing cover is detachably connected to the open end of the tank , There are three vent holes communicating with the interior of the tank body on the sealing cover, and the three vent holes are respectively connected with the methane bottle, the vacuum pump and the portable tile detector through pipelines.

Description

technical field [0001] The invention relates to an underground coal sample processing device and method for indirectly measuring coal seam gas content, belonging to the technical field of coal. Background technique [0002] Coal seam gas content is one of the important parameters for predicting the risk of coal seam outburst and evaluating the effect of coal seam gas drainage and outburst elimination. Its measurement methods include two categories: direct method and indirect method. The theoretical basis of the indirect method for determining the gas content of coal seams is the Langmuir equation of the monolayer adsorption model. a and b values, and then calculate the gas content of the coal sample according to the Langmuir equation, and correct the gas content of the coal seam through correction formulas such as moisture and temperature. At present, when the gas adsorption capacity of coal samples is measured and calculated by the indirect method, one of the coal samples ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 陈学习周世宁
Owner NORTH CHINA INST OF SCI & TECH
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