After the valley rain, the weather warmed up, and the average temperature in most areas gradually rose, and the air humidity also increased. And when the high temperature after the summer is a test, it not only tests the ground staff, but also the staff below the ground. Affected by factors such as geothermal heat and heat dissipation of mechanical and electrical equipment, the high temperature and high humidity environment will not only cause workers to have difficulty in heat dissipation, produce a stuffy feeling, reduce work efficiency, and in severe cases, there will be symptoms of heat stroke such as dizziness, prostration, vomiting, etc., which directly threatens the health and safety of workers;
Mine explosion-proof refrigeration device, through the compressor work, so that the refrigerant continues to absorb heat and release heat to circulate to achieve the effect of cooling the underground environment, suitable for IIA, IIB explosive gas environment Zone 1, Zone 2 dangerous places, is the domestic market high technology content, special type of electrical products.
The refrigeration device can be composed of a mine flameproof dry-type transformer, a mine flameproof and intrinsically safe electric control box, an intrinsically safe temperature sensor with the safety barrier, a pressure switch with the safety barrier, an explosion-proof fan, and a poured and sealed explosion-proof compressor.
Zhongtong intelligent mine explosion-proof refrigeration device adopts a new explosion-proof structure design, which is safe, reliable and easy to operate. It can improve the working environment of workers in deep mines, reduce the labor intensity of workers, and reduce the downtime of the working face caused by high temperature and high humidity in the mine, and increase the effective production time for deep resource mining.
In the structural design of explosion-proof refrigeration device, various factors such as temperature, sparks, and static electricity that may ignite explosive mixtures are fully considered, and a variety of explosion-proof measures are taken to ensure the safety of refrigeration devices and meet the requirements of safety, explosion-proof and other standards for electrical products from limiting, controlling or preventing dangerous temperatures, sparks and static electricity.
The control box and other electrical accessories for the device meet the explosion-proof requirements of underground coal mines. The temperature probe, temperature protection switch and pressure switch are treated by intrinsically safe treatment, and the safety barrier and control circuit board are installed in the electric control box of the mine flameproof and intrinsically safe refrigeration device, and the two are wired separately, and the distance between the intrinsically safe end and the non-intrinsically safe end is not less than 50mm.
The maximum temperature of the surface of the shell of the refrigeration unit and the surface of the housing of the internal kit or unit does not exceed 150°C.
The refrigeration unit shall be connected with a reliable grounding device, and there shall be a grounding mark near it, and an outer guard shall be installed on the outside of the shell and be reliably grounded.