The invention discloses an evaporative cooling type
nitrogen cooling device for an underground
coal mine, and belongs to the technical field of cooling devices. A cooling
system and an air flow and spraying
system are arranged in the device shell; the cooling
system comprises an evaporative condenser, a screw type
refrigeration compressor, an oil separator, a
liquid storage device, a shell-and-tube
evaporator and a three-phase asynchronous motor, the three-phase asynchronous motor is connected with the screw type
refrigeration compressor, the screw type
refrigeration compressor is connected with the oil separator, the oil separator is connected with the evaporative condenser, the evaporative condenser is connected with the
liquid storage device, and the
liquid storage device is connected with the shell-and-tube
evaporator. The liquid storage device is connected with the shell-and-tube
evaporator, and the shell-and-tube evaporator is connected with the screw
refrigeration compressor; the air flow and spraying system comprises a mining fan, a mining water pump, a spraying water tank and a spraying
pipe, the spraying water tank is connected with the mining water pump, the mining water pump is connected with the spraying
pipe, and an air blowing opening of the mining fan is aligned with the evaporative condenser. The defect of independent heat removal of air and
water flow is overcome,
coupling sufficient heat exchange is achieved, and stable operation of a unit is guaranteed.