Automatic drainage device of coal mine fire preventing and extinguishing nitrogen injection pipeline system

Abstract

The invention discloses an automatic drainage device of a coal mine fire preventing and extinguishing nitrogen injection pipeline system in the technical field of coal mines. The automatic drainage device comprises a drainer, a first nitrogen injection pipe and a second nitrogen injection pipe. The first nitrogen injection pipe is mounted on the top of the drainer. The second nitrogen injection pipe is mounted at the bottom of the drainer. A water collection tank is mounted in an inner cavity of the drainer. The bottom of the water collection tank is provided with four drain pipes in a cross-shaped mode. The water collection tank comprises a base plate, a vent pipe and four first mounting slots. The vent pipe is mounted at the middle end of the top of the base plate. The four first mounting slots are formed at the top of the base plate in a cross-shaped mode. The four first mounting slots are located on the outer side of the vent pipe. The four drain pipes are all inserted in the firstmounting slots and located on the tops of the first mounting slots. The automatic drainage device can automatically empty water accumulated in the delivery pipes in real time. The problem that wateraccumulates in the nitrogen injection pipes and the nitrogen injection pipes are choked is solved. The automatic drainage device achieves the automatic draining effect.

Description

technical field [0001] The invention relates to the technical field of coal mines, in particular to an automatic drainage device for a coal mine fire prevention and nitrogen injection pipeline system. Background technique [0002] It is an area where humans mine coal resources in coal-rich mining areas, generally divided into underground coal mines and open-pit coal mines. When the coal seam is far away from the surface, it is generally selected to excavate the coal by digging the roadway underground, which is an underground coal mine. When the distance between the coal seam and the surface is very short, it is generally chosen to directly strip the surface soil layer to excavate coal, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. Coal mines include large areas above and below ground and associated facilities. A coal mine is a reasonable space excavated by humans when excavating geological layers rich in coal, us...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a coal mine fire prevention and nitrogen injection pipeline system automatic drainage device, to solve the problem in the above-mentioned background technology due to the use of the ground nitrogen generator to inject nitrogen into the goaf of the working face. During the transportation process, due to the large temperature difference between the upper and lower wells, especially in mines located in high-altitude and high-latitude areas, the nitrogen injection air compressor itself generates water vapor, which condenses accumulated water in the underground transportation pipeline, and the underground transportation Due to the long distance of water accumulation in the pipe and the inability of the outlet pressure of the nitrogen generator to empty the pipeline, etc., the transportation pipeline is not smooth and the nitrogen cannot be transported to the working surface.

Images