Energy-saving type mine air return indirect heat exchanger and heat exchange device

Abstract

The invention relates to an energy-saving type mine air return indirect heat exchanger and heat exchange device. The energy-saving type mine air return indirect heat exchanger is characterized in that a plurality of heat exchange modules connected in parallel are included, each heat exchange module comprises a heat exchange shell, two heat exchange pipe bundles connected in a V shape and a draught fan, heat exchange pipes in the heat exchange pipe bundles are filled with a heat exchange working medium, and the heat exchange working medium can be an ethylene glycol solution or water according to different heat exchange conditions; water inlets and water outlets of the two heat exchange pipe bundles in each heat exchange module are connected through parallel connecting pipelines respectively to form a water inlet and a water outlet of the heat exchange module; an energy-saving type mine air return indirect heat exchanger water inlet and an energy-saving type mine air return indirect heat exchanger water outlet are further included and provided with a water inlet pipe and a water return pipeline respectively, the water inlet pipeline is connected with the water inlets of all the heat exchange modules through water inlet branch pipes connected in parallel, and the water return pipeline is connected with the water outlets of all the heat exchange modules through water return branch pipes connected in parallel.

Description

technical field [0001] The invention relates to a heat exchanger and a heat exchange device for recovering heat energy, in particular to a heat exchanger and a heat exchange device for recovering mine return air heat energy. Background technique [0002] In the current coal industry, the contradiction between large coal consumption, serious environmental pollution in mining areas and insufficient utilization of waste heat resources in coal mines has become increasingly prominent. The return air temperature of the mine is high, the air volume is large, and the temperature and humidity 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. This part of heat energy is recycled to meet the heating needs of coal mine buildings, shaft antifreeze and staff bathrooms, replacing or canceling traditional coal-fired boilers, reducing coal consumption and pollution, and ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there is a patent CN201571533U which proposes a heat recovery device, which uses spray heat exchange to recover the heat energy of mine return air. The water pump for mine spray heat exchange consumes a lot of energy, which leads to an increase in operating electricity costs; Set up heat pipe heat exchangers, plate heat exchangers or intermediate heat medium heat exchangers to realize the recovery and utilization of mine return air energy. This heat exchange method is restricted by the ventilation area of ​​the air duct due to the mine return air heat exchange, and one Failure of the heat exchanger will affect the normal use of the entire mine return air heat exchange system

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