Cooling device for liquid cooling data center

The invention discloses a cooling device for a liquid cooling data center. The cooling device comprises a liquid storage tank and a cooling tower, an equipment placement box is fixedly arranged in the liquid storage tank, a cooling liquid flowing cavity is arranged between the outer surface of the equipment placement box and the inner wall surface of the liquid storage tank, and cooling liquid is arranged in the cooling liquid flowing cavity; a liquid discharging pipe, a first water pump, a first liquid conveying pipe, a second liquid conveying pipe, a second water pump and a compressor refrigerating device are arranged between the liquid storage tank and the cooling tower, the first water pump is connected with the liquid discharging pipe, and cooling liquid in the cooling liquid flowing cavity is conveyed into the cooling tower through the liquid discharging pipe by means of the first water pump; the second water pump is connected with the first liquid conveying pipe, a liquid inlet of the compressor refrig