Field coal gas content testing device and method

Abstract

The invention discloses a field coal gas content testing device and method. The device comprises an upper layer beam, wherein the upper layer beam is connected with a lower layer base through a bracket; the bracket is fixed on the upper layer beam through a fixing device; the upper layer beam is further connected with a hydraulic lifting jack system; the lower end of the hydraulic lifting jack system is connected with a stress transferring column; the lower end of the stress transferring column is in contact with a sample which is arranged in a sealed gas collection chamber; the sealed gas collection chamber is connected with a gas exhaust control valve which is connected to a gas collection testing device through a connection pipeline; the lower end of the sealed gas collection chamber is connected with a sample base and keeps sealed and airtight; the bottom of the sample base is tightly connected with the lower layer base. During gas collection, a coal sample is pressurized and broken by the hydraulic lifting jack through the stress transferring column, so that gas in the sample can be rapidly resolved and the experiment time is shortened.

Description

technical field [0001] The invention relates to the technical field of coal gas content testing in coal mines, in particular to an on-site testing instrument and testing method for coal gas content. Background technique [0002] Gas accidents are one of the main causes of casualties in coal mines and become the biggest obstacle to coal production safety. At the same time, gas is a non-renewable clean energy. Therefore, whether it is from the prevention and control of gas accidents or the development and utilization of gas, it is necessary to accurately detect the original content of coal seam gas. Therefore, it is very important to study its content testing instruments and measurement methods. [0003] In the existing technology, the on-site testing of coal seam gas content is still under continuous research, and the equipment and testing instruments used are relatively complicated, especially the testing requires a long period of testing work, the work efficiency is low, ...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the on-site testing of coal seam gas content is still under continuous research, and the equipment and testing instruments used are relatively complicated, especially the testing requires a long period of testing work, the work efficiency is low, and the measurement data is not accurate enough

Due to the complicated operation and the continuous analysis of coal seam sample gas, the accuracy of the test cannot meet the requirements, and these devices are difficult to meet the needs of on-site testing

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