An experimental device and method for quickly closing the upper corner to prevent gas leakage

Abstract

The invention discloses an experimental device and method for quickly closing an upper corner to prevent gas leakage. The device includes an air bag, an inflation system, a gas concentration detection system and a hydraulic support stabilization system; Gas transmission branch, the outlet of the high-pressure gas cylinder is connected with an on-off valve, the main gas transmission pipe is equipped with a manometer, control valve and pressure gauge, and the gas transmission branch is connected with a pressure reducing valve, an inflation conduit and an inflation joint; the gas concentration The detection system includes a first light interference gas concentration detector and a second light interference gas concentration detector; the method includes steps: 1. Making an air bag; 2. Carrying out the airtightness test of the air bag; The experimental device for gas leakage is inflated; 4. Experimental testing; 5. The end of the experiment. The invention can quickly fill the air bag to form a barrier in an emergency, quickly close the upper corner, prevent gas leakage, has strong practicability, and is convenient for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of gas disaster control, and in particular relates to an experimental device and method for quickly sealing an upper corner to prevent gas leakage. Background technique [0002] In recent years, with the increase of coal seam mining depth, the concentration of gas accumulation in the upper corner is getting higher and higher. In order to prevent the gas leakage in the upper corner from causing explosion damage, it is necessary to design a device to prevent gas leakage in the upper corner. At present, there are many control measures to prevent gas leakage in the upper corner at home and abroad, such as: gas drainage in the upper corner, installation of air curtains in the upper corner, installation of wind guide facilities in the upper corner, and blowing with local fans. And these existing measures can only prevent part of the gas leakage, there will still be some gas leakage in the roadway in the upper corn...

AI Technical Summary

Problems solved by technology

However, these existing measures can only prevent part of the gas leakage, and there will still be some gas leakage in the upper corner of the roadway, which is likely to cause an explosion and these measures cannot prevent gas leakage quickly and efficiently.

Moreover, the amount of coal mining at home and abroad is increasing, and as the coal seam is mined deeper and the mining volume is greater, the problem of gas leakage is also increasing. The increase in the concentration of gas leakage can easily cause gas disasters. People are paying more and more attention to gas safety issues with the improvement of gas level, but for the sudden and sudden increase of gas concentration, some previous measures seem to be lack of timeliness, rapidity and efficiency

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