Circulating cooling system for continuous casting process

The invention belongs to the field of cooling system, and particularly relates to a circulating cooling system for a continuous casting process. Aiming at the problems that according to an existing continuous casting process, a large amount of heat can be generated in the production process, a continuous casting machine needs to be subjected to heat radiation and cooling treatment, but current heat radiation and cooling procedures are tedious, the heat radiation and cooling efficiency is low, and the need of enterprise production cannot be met, the circulating cooling system comprises a continuous casting machine, and a top box is welded to the top of the continuous casting machine; a first mounting hole is formed in the top of the continuous casting machine, and a second mounting hole is formed in the bottom of the top box; the first mounting hole communicates with the second mounting hole, and the same heat conduction bar is mounted in the first mounting hole and the second mounting hole; and a sealing plat