Control system for indirect air cooling system drain valve

The invention relates to the technical field of power station cooling, in particular to a control system for an indirect air cooling system drain valve. The control system for the indirect air cooling system drain valve is characterized in that the control system comprises a power cutoff detection device, an environmental temperature detection device, a drain valve control device and an emergency power supply device. When indirect air cooling system or station blackout is detected and the environmental temperature of the indirect air cooling system is lower than a first preset value, the indirect air cooling system drain valve is opened, a hydraulic control emergency drain valve can be rapidly opened after station blackout under the condition of low temperature to drain water in all sectors, large-area freezing of a radiator is prevented, and frost crack of a cooling triangle of sector sections is avoided.