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Multi-channel and multi-flow heat exchanger in mine fresh air heating system

A fresh air channel and heat exchanger technology, applied in the direction of heat exchanger types, indirect heat exchangers, heat exchange equipment, etc., can solve the problems of complexity, high investment and operation costs, etc., to achieve increased flow rate, small construction amount, and simple structure Effect

Pending Publication Date: 2021-06-18
曹和平 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The system is complex, and the investment and operating costs are high

Method used

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  • Multi-channel and multi-flow heat exchanger in mine fresh air heating system
  • Multi-channel and multi-flow heat exchanger in mine fresh air heating system

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Embodiment 1

[0057] In this embodiment, the multi-channel and multi-process heat exchanger is applied to a mine to prevent freezing of the well head. Specifically, cancel the original diffusion tower at the air return port of the mine, and instead install the multi-channel and multi-process heat exchanger of the present invention, connect its return air inlet with the mine air outlet, and use the return air heat to cool the mine The fresh air is heated, and the heated fresh air flows out of the heat exchanger through the fresh air outlet 2 and enters the mine fresh air system to supply fresh air for the mine.

[0058] In order to make the return air entering the heat exchanger uniform, guide vanes 7 are arranged in the bend of the mine return air passage 6 .

[0059] In the present embodiment, the flat tube 18 has a width of 150mm-400mm, a height of 100-250mm, and a wall thickness of 3-5mm. The material is carbon steel, stainless steel and other metal materials. The surface of the flat t...

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Abstract

The invention relates to a multi-channel and multi-flow heat exchanger in a mine fresh air heating system. Two smooth wall faces of the heat exchanger are formed by splicing a plurality of metal rectangular flat tubes, and the other two wall faces are provided with steel plates, so that an air return channel is formed, a plurality of layers of heat exchange plates spliced by rectangular flat pipes which are close to one another are arranged in the channel, and the heat exchange plates are parallel to the wall surface of the channel to divide the channel into a plurality of air return branches which are parallel to each other. The heat exchange flat pipes on the wall faces and flat pipes in the heat exchange plates are all arranged perpendicular to the heat exchanger channel, and flowing fresh air and the flowing direction of return air in the heat exchanger channel are perpendicular to each other, so that a cross-flow heat exchange mode is formed; and the flat pipes are arranged according to flow design, the flat pipes in different flows are connected through headers at the end parts to form a fresh air multi-flow turn-back channel, and therefore the flow speed of fresh air in the flat pipes is increased, the heat exchange effect is enhanced, and finally the novel gas-gas heat exchanger which is suitable for discharging mine return air and can efficiently heat the fresh air is formed.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a multi-channel and multi-flow heat exchanger for heating fresh air in mines. Background technique [0002] Affected by the ambient temperature in winter, the air inlet temperature of the mine is often below zero. According to the national "Coal Mine Safety Regulations": "The air temperature below the air inlet well mouth must be above 2°C", that is, the fresh air at the air inlet needs to be heated. Protect from freezing. At present, the commonly used technology in the market is to heat the air through coal-fired, oil-fired or gas-fired boilers, and then transport it underground to achieve the effect of antifreeze and heat preservation. This heating technology that consumes fossil energy not only consumes non-renewable energy, but also emits a large amount of dust, CO 2 and SO 2 pollutants, causing environmental pollution and the greenhouse effect. For underground co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D9/00F28F3/02
CPCF28D9/0093F28F3/02
Inventor 曹和平曹云鹏李小琴翟学东罗腾红布和陈焕倬
Owner 曹和平
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