A one-stop gas content determination device and determination method in a coal mine

Abstract

A one-stop gas content measurement device and measurement method in a coal mine, an intrinsically safe industrial computer is arranged in an intrinsically safe cavity, and electronic flow sensors I to III, solenoid valves I to IV, and a connecting network cable and an explosion-proof gas pipe are arranged in the explosion-proof cavity. ; The crushing system is driven by an air motor. The invention uses the intrinsically safe industrial computer to collect and display the parameters detected by the electronic flow sensors I to III, the gas pressure sensor and the temperature sensor. , Switch the electronic flow sensors I to III through the opening and closing and opening and closing of the solenoid valves I to IV in the control system of the intrinsically safe industrial computer. The intrinsically safe industrial computer transmits data and signals to the underground base station, and the underground base station sends the results of the underground measurement directly to the ground central control room. The invention can realize one-stop underground gas content determination, and can greatly improve the efficiency of underground coal seam gas content determination in coal mines.

Description

technical field [0001] The invention relates to a gas measurement, in particular to a one-stop gas content measurement device and a measurement method in a coal mine, belonging to the technical field of coal mine gas disaster prevention and control. Background technique [0002] Coal seam gas content is an important parameter for predicting gas gushing volume, preventing and controlling gas disasters, evaluating gas drainage effects, and predicting the risk of coal and gas outbursts. 23250-2009), and the "Regulations on Gas Control in State-owned Coal Mine" to ensure safe production in coal mines. [0003] At present, the published patent documents, such as the "Coal Seam Gas Content Testing Method for Sampling in a Negative Pressure Environment" disclosed by the Chinese Invention Patent on May 7, 2014, with a publication number of CN103776722A, the mine gas content determination equipment is divided into above-ground and down-hole Two sets, the cost is too high, most of th...

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Problems solved by technology

[0003] At present, the published patent documents, for example, a kind of publication number CN103776722A published on May 7, 2014 in the Chinese invention patent, "Coal seam gas content testing method for sampling under negative pressure environment", mine gas content measuring equipment is divided into underground and underground Two sets, the cost is too high, most of the gas measurement sites are in the ground laboratory, the measurement cycle is too long, and the gas is easily lost during transportation, resulting in small measurement results and large errors, affecting work efficiency and reading reliability

[0004] A Chinese invention patent published on September 28, 2015 has a publication number of CN105606480A "an automatic coal seam desorbable gas content direct measurement device". The water surface fluctuates, affecting the reliability of the readings

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