Light water type swimming pool pile constant-temperature irradiation device and constant-temperature irradiation method

The invention discloses a light water type swimming pool stack constant-temperature irradiation device which comprises a stack water pool, an irradiation pipeline, a circulating temperature adjusting mechanism and an irradiation container, and an active area is arranged on the lower portion in the stack water pool; the irradiation pipeline is vertically inserted into the reactor pool, and the bottom end of the irradiation pipeline is positioned in the active area; the circulating temperature adjusting mechanism comprises a temperature adjusting assembly, a water pumping pipe and a water supply pipe, the water pumping pipe and the water supply pipe are communicated with the input end and the output end of the temperature adjusting assembly respectively, the end, away from the temperature adjusting assembly, of the water pumping pipe is communicated with the top end of the irradiation pipeline, and the end, away from the temperature adjusting assembly, of the water supply pipe is communicated with the bottom en