Method for active explosion proofing and explosion suppression through high-pressure inert gas

Abstract

Provided is a method for active explosion proofing and explosion suppression through high-pressure inert gas. The method for active explosion proofing and explosion suppression through the high-pressure inert gas is applicable to prevention and suppression of gas explosions in a closed pipeline without external decompression space, and is particularly applicable to prevention and suppression of gas explosions in a coal mine. The method for active explosion proofing and explosion suppression through the high-pressure inert gas comprises the steps that wall grooves are constructed in a mine laneway, and a high-pressure gas source and a signal receiving and processing system are installed; a plurality of ejectors are distributed on the laneway side and a roof in an array mode at intervals, the ejectors are communicated through high-pressure rubber hoses, and pressure sensors which are connected with the signal receiving and processing system are arranged in the portions, on the two sides of each ejector, of the laneway respectively, wherein the laneway side and the roof are arranged on the same section of the mine laneway; the sensors are installed in the laneway, and receive shock wave signals, and the high-pressure inert gas source ejectors and connecting pipelines of the high-pressure inert gas source ejectors are installed; when the gas explosions happen, the sensors detect the forwards-moving shock wave signals, a solenoid valve is started, gas of the high-pressure inert gas source is ejected through the ejectors, a high-pressure inert gas curtain is formed in the laneway, and spread of explosion shock waves is obstructed.

Description

technical field [0001] The invention relates to an active explosion isolation and suppression method for high-pressure inert gas, which is especially suitable for tunnels where gas explosions occur in coal mines, and is also suitable for explosion isolation and suppression of other industrial pipelines that transport combustible gases with explosion hazards. Background technique [0002] The major threat to the safe production of gas explosion coal mines is still the main accident form that causes casualties and property losses in mines. For this reason, major coal-producing countries such as the United States, Russia, Poland, and Germany have established large-scale underground explosion test tunnels of different sizes. , developed various automatic explosion-proof devices and passive explosion-proof sheds with sensitive actions and good spray effects. In order to solve the practical problems of coal mine safety production, our country attaches great importance to organizin...

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Problems solved by technology

[0004] First, it is difficult to accurately determine the source of explosion

Since the gas will diffuse and move into the ventilation network with the wind flow in the restricted roadway, once it diffuses and touches a suitable ignition source, it will explode, and it is actually difficult to judge when and where it will encounter the accident fire source ( The occurrence of the accident fire source is

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