A cooling system for mine underground

Abstract

The invention discloses a refrigeration cooling system under a mine. The refrigeration cooling system comprises a main roadway under the mine or a refrigerating unit of a main roadway equipment cavern, and the refrigerating unit is communicated with a first mine heat exchanging device and a second mine heat exchanging device; the refrigerating unit is a refrigeration circulating system formed by connection of a condenser, an evaporator and a compressor, and the condenser is connected with the second mine heat exchanging unit through a cooling water pump to form a closed cooling-water circulating system; the evaporator is connected with the first mine heat exchanging unit through a refrigerated water pump to form a closed refrigerated-water circulating system. The refrigeration cooling system is simple in structure, low in loss of refrigeration capacity, high in heat exchanging rate and low in operation cost. Being the novel refrigeration cooling system, the refrigeration cooling system can be widely applied to a mine cooling system.

Description

technical field [0001] The invention relates to an underground refrigeration and cooling system, in particular to a cooling system in which the cooling device, the freezing water system, the cooling water system and the spraying water system of the cooling and cooling system are all located under the mine. Background technique [0002] With the continuous increase of mine mining depth and the continuous improvement of mining mechanization, mine high temperature heat damage has become a decisive factor affecting and restricting mining depth. It is generally believed that the air dry bulb temperature of the working face in the mine exceeds 30°C, which is called a high-temperature working face, and the hazards of continuous high temperature and high humidity in the mine throughout the year and affecting the normal operation of mining work are called mine heat hazards. With the increase of mining depth, mine heat damage can no longer be solved by increasing mine ventilation or a...

AI Technical Summary

Problems solved by technology

However, for the water cooling system, the static pressure at the bottom of the water pipeline from the ground to the underground is as high as hundreds of kilograms, which is difficult for conventional mine heat exchange devices and water pipelines, so high-pressure resistant pipelines and mine heat exchange devices must be used , the initial investment of the project is greatly increased, and the heat transfer effect of the mine heat exchange device and the utilization efficiency of cooling capacity are greatly reduced due to the use of high-pressure pipelines

For the ice cooling system, multiple functions such as ground ice production, flake ice, ground and underground ice transportation, underground ice melting, and underground cooling transportation must be realized. , Once the system starts, it must run continuously

[0005] The refrigeration system with refrigeration units installed on the ground and underground at the same time is essentially a two-stage refrigeration system connected in series. The system is complicated, the cooling capacity is large, the heat exchange efficiency is poor, and the operating cost is high.

[0006] The refrigeration unit is installed underground. According to the different installation positions of the heat dissipation cooling tower, it can be divided into an underground heat dissipation cooling tower and a ground heat dissipation cooling tower. If the heat dissipation cooling tower is installed on the ground, the condenser on the underground refrigeration device will exchange heat The side pipes bear hundreds of kilograms of static pressure, so the heat exchange side pipes of the condenser must use high-pressure resistant pipes or add high and low pressure heat exchangers to the cooling water pipes, and the heat exchange efficiency will be greatly reduced

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