Compressed air cold conveying cooling system for mine and cooling method thereof

Abstract

The invention discloses a compressed air cold conveying cooling system for a mine and a compressed air cold conveying cooling method. The compressed air cold conveying cooling system is formed by sequentially connecting an air compressor, a natural cold source subsystem, a manual cold source subsystem, a compressed air injection and air supply device through a compressed air conveying pipeline, wherein the air compressor, the natural cold source subsystem and the manual cold source subsystem are arranged on the ground, and the compressed air injection and air supply device is arranged on an underground mine working surface. The natural cold source subsystem is a water cycle cooling passage connected by a first level cooling tower and a first level cooling sprinkling chamber through a pipeline for pre-cooling compressed air. The manual cold source subsystem is water cycle cooling passage sequentially connected by a second level cooling tower, a second level sprinkling chamber and a refrigerating unit through the pipeline through the pipeline for manually cooling the compressed air. Due to the fact that natural cold source is utilized to conduct pre-cooling on the compressed air, refrigeration load of manual refrigeration equipment is greatly reduced, in winter or a transition season, the manual cooling system does not even need to be operated, and then operating cost of the compressed air cold conveying cooling system is greatly reduced.

Description

technical field [0001] The invention relates to a mine cooling system, in particular to a compressed air cooling mine cooling system. Background technique [0002] With the continuous increase of mine mining depth and the continuous improvement of mining mechanization, mine heat damage has become a decisive factor restricting mine mining depth. For deep mines with a mining depth of more than 800 meters, due to the serious problem of heat damage, it is impossible to fundamentally achieve the control goal of mine heat damage only by adopting non-artificial cooling technical measures such as increasing mine ventilation. Therefore, at present, artificial cooling systems are mostly used to control the heat damage of mines. [0003] The artificial cooling system of a mine usually consists of a large refrigeration station, large air handling equipment, refrigerant delivery system and related auxiliary equipment. According to the different installation locations of refrigeration u...

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Problems solved by technology

The mine cooling system disclosed in this document has the following two problems: ① After the air is compressed by the compressor, the internal energy increases and the temperature rises (usually 30°C to 60°C higher than the ambient temperature)

The refrigeration load and operating cost of the mine cooling system have been greatly increased; ②The refrigeration unit and heat removal equipment are installed in the underground chamber, which makes it difficult for the system to discharge heat, and the operating efficiency of the refrigeration unit is reduced, and explosion-proof equipment must be used, which is relatively safe Poor, high investment cost

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