Coal mine high-temperature tunneling roadway sectional cooling device and method

Abstract

The invention discloses a coal mine high-temperature tunneling roadway sectional cooling device and method. The device comprises a box, wherein the interior of the box is sequentially divided into a hot air recycling bin, an air inlet bin and a cold air exhausting bin from bottom to top, a vortex tube is arranged in the air inlet bin, the cold air flow end of the vortex tube is connected with the cold air exhausting bin, and the hot air flow end of the vortex tube is connected with the hot air recycling bin; the air inlet bin is provided with an air inlet connection port, an air pressure tube is arranged between the vortex tube and the air inlet connection port, the air inlet bin is connected with a compressed air pipeline through the air inlet connection port, the compressed air pipeline is provided with a pressure regulating valve, and the hot air recycling bin is connected with a hot air exhausting pipeline through an air exhausting hole connection port formed in the hot air recycling bin. Compared with the prior art, the device and method have the advantages of being free of moving parts, compact in structure, light, low in cost and long in service life; cold air can be produced timely without Freon refrigerants, refrigerating efficiency and speed are high, refrigerating can be performed on the underground work surface timely by introducing compressed air.

Description

technical field [0001] The invention relates to a cooling device, in particular to a segmental cooling device and cooling method for high-temperature tunneling in coal mines. Background technique [0002] In recent years, with the continuous increase of mine mining depth, continuous extension of ventilation distance, small ventilation cross-section and many other factors, it cannot meet the requirements of underground air volume in mines, resulting in the rise of underground temperatures in mines and high-temperature heat damage, which is largely related to The contradictions unfavorable to safe production such as mining procedures and working environment are particularly prominent. In a high-temperature environment, people's central nervous system is prone to disorders, resulting in trance, fatigue, general weakness, groggy, and so on. This state of mind becomes the cause of the induced accident. When the air temperature in the working place in the mine reached 30°C, heat...

AI Technical Summary

Problems solved by technology

Existing problems: When the air volume increases to a certain extent, the effect of increasing air and cooling will be weakened

Existing problems: high cost, poor timeliness, as time goes by, the heat insulation effect of the sprayed heat insulation layer will be greatly reduced

Existing problems: it will increase the humidity of the air flow, which will lead to a humid working environment

Existing problems: the downward ventilation method is not conducive to the gas management in the working face and the disaster treatment during the fire; in addition, the transportation mechanical and electrical equipment is in the return air flow, which brings unsafe factors to the production

Existing problems: The workers’ workplaces are relatively dispersed, and cold storage and cooling clothing are often used to protect workers. Due to the need for cold storage and freezing, the cold storage and cooling clothing requires faster heat transfer and a shorter service cycle.

Difficult to meet high frequency use

[0009]Through analysis, it is found that the above existing mine cooling measures cannot effectively cool down the mine

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