Intelligent regulation and control system and method for extracting high-concentration gas from coal mine

Abstract

The invention discloses an intelligent regulation and control system and method for extracting high-concentration gas from a coal mine. The intelligent regulation and control system comprises an extraction main system, a plurality of intelligent regulation and control gas extraction systems, a monitoring substation, a looped network switch and a monitoring center. A coal bed is divided into a plurality of extraction regions, and each region is provided with one intelligent regulation and control gas extraction system. The optimal opening degree of an electric control valve II is determined bytesting and adjusting the extraction main system, then each intelligent regulation and control gas extraction system is tested and adjusted correspondingly, and the optimal rotating speed of each miniature variable-frequency extraction pump or the optimal opening degree of each electric control valve I is determined; after completion, gas extraction is carried out on each extraction region according to the determined optimal data, and when the gas concentration of any extraction region or the whole extraction pipeline is too low through real-time monitoring, adjustment is carried out again, sothat the gas extraction concentration is increased; and the high-concentration gas extraction period can be prolonged to the maximum extent, so that the gas extraction safety and utilization efficiency are improved.

Description

technical field [0001] The invention relates to an intelligent control system and method for extracting high-concentration gas in coal mines, and belongs to the technical field of gas extraction in coal mines. Background technique [0002] As one of the initiators of the greenhouse effect, coalbed methane (commonly known as "gas") is an efficient and clean new energy source because of its high combustion calorific value and low pollution. Coalbed methane resources are very rich in my country. According to resource evaluation results, my country's coalbed methane resources are very rich. The development and utilization of coalbed methane can not only bring considerable economic benefits, but also improve my country's energy structure and alleviate the increasingly tense energy resources. crisis, effectively reducing the occurrence of gas accidents in coal mines, promoting safe production in coal mines, and reducing air pollution. Coal seam drilling gas drainage, as the most i...

AI Technical Summary

Problems solved by technology

In addition, at present, more than 90% of the coal seam gas drainage projects in my country's coal mines have an extremely unbalanced input-output ratio, and the main pipe drainage concentration of most coal seam gas drainage systems is less than 10%, or even lower than 5%, and the utilization rate of gas drainage is extremely low , the vast majority of coalbed methane (gas) is directly discharged into the air after extraction

At present, the adjustment of the concentration of the underground gas drainage system mainly relies on manual work, which is labor-intensive, time-consuming, blind and random, and the overall effect is not significant

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