Preparation system for nitrogen inhibition water mist for controlling mine fire and fire prevention and extinguishing method thereof

Abstract

The invention discloses a preparation system for nitrogen inhibition water mist for controlling a mine fire, and a fire prevention and extinguishing method thereof. The preparation system is characterized in that an inhibitor liquid of certain concentration is prepared in an inhibitor liquid tank and then is poured into a water pipe through an addition pump according to a certain ratio, and a regulating valve and a pressure gauge are mounted on the water pipe and a nitrogen pipeline and are both connected with a water mist generating device; the water and the nitrogen, both containing the inhibitor, at a moderate pressure, flow into the water mist generating device through adjusting control valves on a pump outlet inhibitor liquid pipe, the water pipe and the nitrogen pipeline; in the water mist generating device, by taking the nitrogen as power, a mixture system containing the inhibitor, the water mist and the nitrogen is prepared and then poured into a mined out space or a fire area through a conveying pipe. The preparation system can directly utilizes the current water pipe and nitrogen pipeline in the coal mine, occupies less space, can move flexibly, is convenient to operate, high in fire prevention and extinguishing efficiency, safe and reliable, and also has an explosion-proof function.

Description

technical field [0001] The invention relates to a nitrogen gas blocking fine water mist preparation system and a fire prevention and extinguishing method thereof, and is especially suitable for fire prevention and extinguishment of goafs or closed fire areas in underground coal mines. Background technique [0002] Mine fire is one of the main disasters in coal mines, which poses a great threat to the safe production of coal mines. In order to prevent and control mine fires, nitrogen, inhibitors and water are generally used as fire prevention and extinguishing media. Among them, nitrogen has good inerting and suffocating and diffusion functions, which can better inhibit the development of fire and can penetrate deep into the fire zone, but the specific heat capacity of nitrogen is very small, and its heat absorption and cooling function is very poor. Inhibitor has good resistance to coal, and fine water mist has a strong heat absorption and cooling function, but it is diffic...

AI Technical Summary

Problems solved by technology

Among them, nitrogen has good inerting and suffocating and diffusion functions, which can better inhibit the development of fire and penetrate deep into the fire area, but the specific heat capacity of nitrogen is very small, and its heat absorption and cooling function is very poor

The inhibitor has a good inhibitory effect on coal, and the fine water mist has a strong heat-absorbing and cooling function, but it is difficult to transport it to the goaf or the deep part of the fire area

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