Perpendicular crossing type mine return air heating fresh air heat exchanger and heat exchange method thereof

Abstract

The invention discloses a vertical crossing type mine return air heating fresh air heat exchanger and a heat exchange method thereof, and belongs to the field of heat exchangers. The vertical crossing type mine return air heating fresh air heat exchanger comprises a heat exchanger shell, and the upper end and the lower end of the heat exchanger shell communicate with a return air inlet pipeline and a return air outlet pipeline correspondingly; the mine return air is used for directly heating the fresh air entering the well, the purpose of freezing prevention of the well shaft is achieved, waste heat in the mine return air can be effectively utilized, and under the conditions that current small and medium-sized coal-fired boilers are gradually limited to be used and natural gas supply is not stable, the mine return air is a stable and high-quality waste heat resource, and energy conservation and environmental protection are achieved. In addition, the fresh air is used for blowing a pneumatic piece imitating a butterfly wing to flap, so that a beating block impacts a vibration fork to generate vibration, vibration is generated in the heat exchange tube, condensed liquid drops in the heat exchange tube can slide down more quickly, dust brought by the fresh air can be prevented from being precipitated on the outer surface of the heat exchange tube, and the heat exchange tube is more convenient to clean. Therefore, the heat exchange coefficient can be effectively improved.

Description

technical field [0001] The invention relates to the field of heat exchangers, and more specifically relates to a vertical cross type mine return air heating fresh air heat exchanger and a heat exchange method thereof. Background technique [0002] In mine ventilation, people call the wind that flows out after cleaning the working face "return air". The roadway through which the return air flows is called the return air alley. As the name implies, the return air alley is used for return air. For the ventilation and air-conditioning profession, it is to save cooling capacity in summer and for winter in winter under the premise that the fresh air meets the needs of personnel, equipment and processes. Save heat and the operating cost of the air conditioning system. The air in the air-conditioned room is not completely exhausted, but the part of the air that is drawn back by the fan and mixed with the fresh air is reused (also called circulating air), so the return air lane is al...

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the object of the present invention is to provide a vertical cross type mine return air heating fresh air heat exchanger and its heat exchange method, which uses the mine return air to directly heat the incoming fresh air, which not only achieves the antifreeze effect of the shaft In addition, it can effectively utilize the waste heat in the mine return air and save the consumption of coal and natural gas. At present, the use of small and medium-sized coal-fired boilers is gradually restricted, and the supply of natural gas is unstable. The mine return air is a stable and High-quality waste heat resources, and use the fresh wind to blow the wind-moving piece imitating the wings of a butterfly to stir up, and then make the hitting block hit the vibrating fork to vibrate, so that the inside of the heat exchange tube vibrates, which can not only make the inside of the heat exchange tube condensate The liquid droplets fall down faster, and it can also prevent the dust brought in by the fresh air from settling on the outer surface of the heat exchange tube, which can effectively improve the heat transfer coefficient

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