Nuclear power station cold chain system

The invention provides a cold chain system which comprises a water pump, a first heat exchanger, an air cooling device and a water channel, the water pump comprises a first centrifugal water pump and a circulating water pump, and the inlet end of the air cooling device is connected with the outlet end of the first heat exchanger; the outlet end of the air cooling device is connected with the inlet end of the circulating water pump, and the outlet end of the circulating water pump is connected with the inlet end of the first heat exchanger; the water channel comprises a first water inlet channel and a first water drainage channel, the first water inlet channel is connected with the inlet end of the first centrifugal water pump, the outlet end of the first centrifugal water pump is connected with the inlet end of the first heat exchanger, and the first water drainage channel is connected with the outlet end of the heat exchanger. According to the embodiment of the invention, the cooling efficiency of the cold c