Coal mine underground coal seam gas content automatic measuring device

Abstract

The invention provides a coal mine underground coal seam gas content automatic measuring device which comprises a first mounting shell, a second mounting shell, a coal sample tank, a tank cover, a supportable lifting seat structure, an anti-explosion high-speed motor, a rotary crushing frame structure, an anti-skid pad, an auxiliary gathering crushing seat structure, a first conveying pipe, a first electromagnetic valve, a gas-solid separator and a second conveying pipe. The device comprises a methane concentration sensor, a second electromagnetic valve, an intelligent flowmeter, a first gas pressure sensor, a third conveying pipe, a fourth conveying pipe, a third electromagnetic valve, an anti-explosion vacuum pump, a measuring cylinder, a liquid pressure sensor, a fourth electromagnetic valve, a rubber hose, a storage tank, a rodless cylinder, a second gas pressure sensor, a temperature sensor, a PLC, a control panel and an operation switch. The device has the beneficial effects that through the arrangement of the supportable lifting seat structure, the rotary crushing frame structure can conveniently ascend from the interior of the coal sample tank, and large samples can be conveniently placed and measured.

Description

technical field [0001] The invention belongs to the technical field of coal seam gas content measurement, in particular to an automatic measurement device for coal seam gas content in an underground coal mine. Background technique [0002] The direct methods for coal seam gas content determination include: geological exploration borehole gas desorption method, downhole borehole gas desorption method and coal core extractor method, etc. The basic method is to take coal cuttings or coal cores when the coal seam is just exposed, quickly put them into an airtight container, measure the desorption speed and desorption amount Q2, use the desorption law to deduce and compensate the total amount Q1 of the escaped part during the sample collection process, and then Go back to the laboratory to measure the remaining amount of gas Q3 in the coal sample, and finally get the gas content Q=Q1+Q2+Q3. In the process of measuring the gas residual quantity Q3 in the laboratory, first use the...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides an automatic measurement device for gas content in underground coal seams in coal mines, so as to solve the problem that the existing automatic measurement devices for gas content in coal seams in underground coal mines are not convenient for placing and crushing samples. Problems with Larger Samples

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