SU1245714A1 - Method of preventing explosion of gas-air mixture - Google Patents

Description

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The invention relates to the mining industry and can be used to prevent explosions of gas-air mixtures on gas-bearing coal seams in dead-end areas.

The purpose of the invention is to increase the effectiveness of neutralizing an explosive environment: and reducing the consumption of the inhibitor due to the accuracy of determining the time of administration of the inhibitor before the formation of an explosive situation.

In the drawing, a schematic diagram of the device with which the proposed

The method is a longitudinal section of production

In a dead-end mountain peak 1, a roof 2 is installed at a certain distance (3-6 m) from the intended location of the explosion, which produces certain electrical signals connected via a buzzer 3 to installation 4 to produce an inhibitor, for example, reflux aerosols from freon 114-B2 ..-

The method is carried out as follows.

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VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. 4/5

Production and printing company, Uzhgorod, Projecto st., 4

45714

When a dead-end production of a concentration of a gas-air medium, such as methane, is formed in the bottomhole, about 4.3%, which is not yet a concentration of an explosion of the gas-air mixture, the 2G sensor registers this concentration and sends a signal through the detector 3 to the installation 4, which turns on to work it starts. Remove the inhibitor - phlegmatizing aerosol from freon 114-B2 and deliver it to the hazardous area before it is formed. explosive methane concentration, preventing an explosion in this zone. t5 A method of preventing an explosion of an air-gas mixture can be applied in other places where there is an accumulation of explosive gases. For example, the sensor can be installed on a coal miner 20, during operation of which explosive situations arise.

The application of the proposed method of preventing the explosion of an air-gas mixture on coal gas

25 layers significantly increases the efficiency of neutralization of an explosive atmosphere, which allows to ensure safety of work in gas mines.

Claims (1)

METHOD FOR PREVENTING EXPLOSION OF A GAS-AIR MIXTURE, which consists in supplying an inhibitor to an explosive atmosphere, characterized in that, in order to increase the efficiency of neutralization of an explosive atmosphere and reduce the consumption of an inhibitor by increasing the accuracy of determination. As the time of introduction of the inhibitor before the formation of an explosive situation, the concentration of the gas-air mixture is preliminarily recorded and, when it approaches the maximum permissible explosive concentrations, the inhibitor is fed into the zone of the expected accumulation of explosive gases until an explosive concentration is formed in it. 1245714 A1