Deep stope ventilation and refrigeration system utilizing return air

Abstract

The invention provides a deep stope ventilation and refrigeration system utilizing return air, which is characterized by comprising an air shaft, a return air cooling tower, a refrigerating unit and a stope air cooler, fresh air is input into a mine through the air shaft, then the return air is subjected to heat exchange through the return air cooling tower, hot water cooled in the air cooling tower is subjected to heat exchange with an evaporation end of the refrigerating unit, and the stope air cooler is used for cooling the stope. A refrigerant of the refrigerating unit is cooled and then exchanges heat with hot water from the stope air cooler, the hot water from the air cooler is cooled, the hot water from the air cooler enters the stope air cooler after being cooled, air entering the stope air cooler is cooled, the cooled air is conveyed to the stope, and the stope air is conveyed to the stope. Therefore, the effect of cooling the stope environment is achieved. The air return system is used for providing cooling capacity instead of a water cooling tower system, and the problems of water supply difficulty and water pollution are solved.

Description

technical field [0001] The invention relates to the field of deep metal mine stope cooling technology, and specifically designs a deep metal mine stope ventilation and cooling system using return air, which can effectively reduce the ambient temperature in the mine, reduce the high-pressure heat exchange equipment of the above-ground refrigeration system, and improve the system temperature. safety and stability. Background technique [0002] In the process of deep mine mining, the problem of deterioration of underground thermal environment is very prominent. As the mining depth of the mine increases, after entering the deep part, the working face of the mine begins to be affected by high temperature, which not only restricts the safe production and construction of the mine, but also threatens the health of the miners. my country's "Safety Regulations for Metal and Nonmetal Mine" stipulates that the air temperature of the mining face of the production mine shall not exceed 2...

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Problems solved by technology

[0009] In view of this, the technical problems to be solved by the present invention are 1) the difficulty of water supply and water pollution in the traditional water cooling tower cooling method; 2) the problem of long pipes and excessive pressure on the traditional cooling tower; 3) The traditional central air-conditioning technology has high investment costs, redundant pipelines, and the problem that it is not flexible enough to face the complex and changeable stope environment

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