Method for extinguishing fire by utilizing fuel oil inert gas generator to directly convey inert gas to local ventilator

Abstract

Provided is a method for extinguishing fire by utilizing a fuel oil inert gas generator to directly convey inert gas to a local ventilator. According to the method, inert gas generated by the inert gas generator is cooled, the inert gas is conveyed to an ignition point of a tunneling working surface through the local ventilator which normally operates on the tunneling working surface, that is, fresh air flow originally supplied by the local ventilator is replaced by the inert gas to carry out normal ventilation on the tunneling working surface, under the condition that the ventilation state ofthe tunneling working surface is kept unchanged, a fire source is anoxic and suffocated, and the purpose of long-distance fire extinguishing is achieved; and therefore a rapid, safe and efficient fire extinguishing effect is achieved.

Description

technical field [0001] The invention relates to the technical field of coal mine fire extinguishing, which combines a fuel oil inert gas generator with a local ventilator in a single-head roadway of a coal mine excavation face to extinguish fire. Background technique [0002] The fuel inert gas generator is a kind of equipment equipped by the mine rescue team to extinguish the fire in the open area. The amount of inert gas produced is 150m 3 / min—1000m 3 / min, which can meet the demand for air supply of local fans. It is generally used when a fire occurs in the mining face, and the generated inert gas is transported to the fire point by the independent and complete ventilation system along the upper and lower sides of the working face to extinguish the fire. For the excavation face, the inert gas cannot directly enter the fire point, so usually , The fuel inert gas generator is not suitable for extinguishing the fire that occurs in the single-ended roadway. [0003] At p...

AI Technical Summary

Problems solved by technology

Long-distance sealing and water flooding (only available in the single-headed roadway down the mountain) are used to deal with fire accidents in the single-headed roadway of the mine. Although it is relatively safe, the closed area of ​​the fire area is large, the fire area is extinguished, and the subsequent resumption of work and production takes a long time. , affecting the normal production of the mine

Direct fire extinguishing is limited by many conditions such as fire intensity, water supply system, and on-site gas concentration, and the safety risk is relatively large

After the mine tunnel fire accident occurs, it is very complicated to deal with the location, location, environment and other factors, and if the treatment methods and measures are not correct, secondary accidents such as gas explosions will occur

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