Intermediate cooling device and using method thereof

The invention relates to the technical field of heat exchange equipment, in particular to an intermediate cooling device and a using method thereof.The intermediate cooling device comprises a cooler, a heat extraction outer pipe used for exhausting air is arranged outside the cooler, a heat extraction frame ring is fixedly inlaid outside the cooler, and the heat extraction frame ring is connected with a heat extraction channel in the cooler; a clamping groove opening used for containing the heat extraction outer pipe is formed in the outer portion of the heat extraction frame ring, a fixing ring used for connection is fixedly connected to the outer portion of the heat extraction outer pipe, and the fixing ring is movably connected to the interior of the clamping groove opening. A new heat extraction outer pipe is placed in the guiding assembly, the adjusting and controlling assembly is matched to drive the fixing ring and the heat extraction outer pipe to move upwards till the fixing ring enters the clamping