An intelligent control system and method for high-concentration gas extraction in coal mines

Abstract

The invention discloses an intelligent control system and method for extracting high-concentration gas in coal mines. Drainage area, each area is equipped with an intelligent control gas production system, through the test and adjustment of the main drainage system, determine the optimal opening of the electric control valve II, and then test and adjust each intelligent control gas production system , to determine the optimal speed of each miniature variable frequency drainage pump or the optimal opening of each electronically controlled valve I; When the gas concentration in the drainage area or the entire drainage pipeline is too low, re-adjust to increase the gas drainage concentration; it can maximize the extension of the high-concentration gas drainage period, thereby improving the safety and utilization efficiency of gas drainage.

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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