A kind of coal mine underground air conditioner and refrigeration method driven by small explosion-proof compressed air

Abstract

The invention discloses a small explosion-proof coal mine underground air conditioner driven by compressed air, and a refrigeration method. The air conditioner comprises an inlet compressed air treatment module, a vortex tube refrigeration module and an outlet exhaust treatment module; the inlet compressed air treatment module comprises a filter and a pressure reducing valve; the vortex tube refrigeration module comprises a vortex chamber, and one end of a vortex tube in the vortex chamber is connected with a cold end tube; the other end of the vortex tube is connected with a hot end tube, anda temperature control valve and a muffler are installed on an outlet pipeline of the hot end tube; the other end of the cold end tube is connected with a cold air tube in an air conditioning room; and the outlet exhaust treatment module comprises a gas-water separation device, a gas collecting device, a recycling device and an emptying device. According to the air conditioner, by adopting the vortex tube driven by the compressed air for refrigeration, the disadvantages of a traditional refrigeration mode can be overcome, and the air conditioner has the advantages of a simple refrigeration system, flexible application, less cold conveying pipelines, low bearing pressure, low requirements for pipeline materials, a good cooling effect, no pollution to underground environment and the like.

Description

technical field [0001] The invention relates to the technical field of mine refrigeration, in particular to a coal mine underground air conditioner driven by a small explosion-proof compressed air and a refrigeration method. Background technique [0002] The mining depth of my country's coal mines is increasing at a rate of 8-12m per year, and the central and eastern mining areas are entering deep mining at a rate of 10-25m per year. With the increase of mining depth, the ground temperature continues to rise, resulting in an increase in the temperature of the underground mining face. The temperature of rocks in some kilometers of mines has exceeded 40°C, even reaching 50°C. The ground temperature is high and hot water gushes out. The temperature of the mining working face exceeds 30°C, and the temperature of some mining working faces exceeds 35°C. The air quality is poor. . In addition, the special environmental conditions under the mine make the power supply lines and elec...

AI Technical Summary

Problems solved by technology

However, there are shortcomings. The ground centralized type needs to use high and low pressure conversion devices to process high-pressure water, and the equipment consumes high energy; the underground centralized type requires the excavation of large-section electromechanical chambers underground and has poor safety performance; the upper and lower combined systems are complex, which is not conducive to Adjustment; local decentralized refrigeration equipment in the mine is scattered, not easy to manage, and has poor safety performance; it is difficult to transport and melt ice by artificial ice making and cooling

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