Coal seam gas extraction pipe control device and control method

Abstract

The invention discloses a coal seam gas extraction pipe control device and a control method, and belongs to the field of coal seam gas extraction management system equipment. The control device comprises a gas concentration sensor, a data processing module, a display module, a volume type flow meter, a shaping circuit, a controller, a wireless communication module, a pressure sensor, an analog-digital conversion module and a motor valve. The control device is characterized in that a pipe is synchronously connected with the gas concentration, pressure and flow sensors and the motor valve to realize synchronous measurement and control of common points. The controller analyzes the gas concentration, the gas pressure and the change tendency thereof; and the motor valve is controlled to realize the opening / closing control of the gas pipe. The control method comprises the gas concentration and gas pressure change tendency analysis and the gas pipe control. The controller finishes the measurement of pipe gas concentration, flow and pressure; the measured data is compared with preset gas concentration and pressure thresholds and change tendency thresholds; and the motor valve is controlled to realize opening and closing of the gas pipe to achieve the purposes of controlling the gas concentration in the extraction pipe and improving the extraction efficiency.

Description

technical field [0001] The invention discloses a coal seam gas drainage pipeline control device and a control method, belonging to the field of coal seam gas drainage management system equipment. Background technique [0002] Coal seam gas extraction is currently an important safety and preventive measure to reduce mine gas emission and prevent gas explosions and coal and gas outburst disasters. The extracted gas can also be developed and utilized as high-quality clean energy. Gas drainage generally uses gas pumps or other extraction equipment to extract high-concentration gas from the coal seam, and uses the extracted high-concentration gas rationally or discharges it to the ground or mine main circuit through a pipe network isolated from the roadway. In the wind alley. Different drainage methods have different optimal and effective drainage time. During this period, the amount of gas extracted is large and the concentration is high, and then gradually decays to no value o...

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Problems solved by technology

[0004] In order to solve the technical defects existing in the existing gas drainage system, the present invention provides an unattended gas drainage pipeline opening and closing automatic control device realized by connecting a concentration sensor, a pressure sensor, a flow sensor and a controller

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