Fire extinguishing device in coal mine gob

Abstract

The invention provides a fire extinguishing device in a coal mine gob. A nitrogen generation device is connected with a nitrogen purification device through a pipeline. The nitrogen purification device is connected with a nitrogen pressurization device through a pipeline. The nitrogen pressurization device is connected with a low-temperature processing pump through a pipeline. The low-temperature processing pump is connected with a nitrogen liquefying device through a pipeline. The nitrogen liquefying device is connected with a jetting device through a pipeline. The tail end of the jetting device is provided with a nozzle. The jetting distance of the nozzle and the nitrogen jetting pressure can be adjusted. According to the fire extinguishing device, the jetting distance and the nitrogen jetting pressure of the arranged nozzle can be adjusted so that the specific conditions of nitrogen jetting can be adjusted according to the needs of practical fire distinguishing conditions, the nitrogen amount can be effectively saved, in addition, the special nitrogen generation device is arranged and purifying and oxidizing are conducted so that high-purity preparing of nitrogen can be effectively achieved, and the fire distinguishing effect is improved.

Description

technical field [0001] The invention relates to a fire extinguishing device, in particular to a coal mine goaf fire extinguishing device, which belongs to the technical field of coal mining and safety equipment. Background technique [0002] For coal mining, especially for natural coal seams, it is necessary to establish a fire prevention and extinguishing system for spontaneous fire prediction, underground tube monitoring and nitrogen injection in the fire area. Among them, spontaneous fire prediction and forecasting is to conduct regular inspections on the underground fireproof seals. The inspection items include whether the seals are leaking, gas inside and outside the seals, carbon monoxide concentration, temperature, and internal and external pressure differences. If problems are found, timely measures are taken to deal with them. Bundle tube monitoring is to use the method of pre-arranging bundle tubes to extract gas from the upper corner of the working face, the goaf,...

AI Technical Summary

Problems solved by technology

Nitrogen injection to prevent and extinguish the fire is to inject nitrogen into the goaf in time to extinguish the fire hazard in the goaf. Among them, the use of nitrogen to extinguish the fire has a good effect. However, in the current nitrogen preparation process, the purity is often not reached, and In the process of spraying nitrogen, it is easy to cause nitrogen loss, and the utilization rate of nitrogen fire extinguishing is low, which cannot meet the needs of efficient nitrogen fire extinguishing

Images