Heat exchange device

Abstract

The invention discloses a heat exchange device, and belongs to the technical field of heat energy recovery. The heat exchange device comprises a shell and a heat exchange structure arranged in the shell, the shell is provided with an air inlet and an air outlet, the top of the shell is provided with a plurality of upper headers, and the bottom of the shell is provided with a plurality of lower headers in one-to-one correspondence with the upper headers; and the heat exchange structure comprises a plurality of heat exchange tubes, a preset included angle is formed between the extending direction of each heat exchange tube and the flowing direction of air, and at least one heat exchange tube is communicated between each upper header and the corresponding lower header. Compared with the priorart, the heat exchange device has the advantages that heat contained in mine return air can be recovered, and meanwhile, a heat transfer medium in the heat exchange pipes is prevented from being in direct contact with air, so that blockage of a circulating pipeline and a circulating pump due to dust contained in the heat transfer medium is avoided, and the maintenance difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of heat energy recovery, in particular to a heat exchange device. Background technique [0002] In the current coal industry, the contradiction between large coal consumption, serious environmental pollution in mining areas and insufficient utilization of coal mine waste heat resources has become increasingly prominent. The return air temperature of the mine is high, the air volume is large, and the humidity and temperature remain constant throughout the year, which contains a large amount of low-temperature heat energy, which is often discharged without utilization, resulting in energy waste. Recycling this part of heat energy can meet the heat demand of coal mine building heating, shaft antifreeze, etc., and replace or cancel traditional coal-fired boilers, which can reduce coal consumption and reduce coal pollution. [0003] At present, the existing technology uses spray heat exchange to recover the heat...

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Problems solved by technology

[0003] At present, the existing technology uses spray heat exchange to recover the heat energy of mine return air, but the water consumption of spray heat exchange is relatively large, and the water is in direct contact with the mine wind, resulting in a large content of impurities such as dust in the water, which is easy to cause damage to the circulation pipeline. And circulation pump blockage, maintenance is difficult

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