Water circulation safety guarantee system for ultrahigh-temperature graphitization furnace

The invention provides an ultrahigh-temperature graphitization furnace water circulation safety guarantee system which comprises a cold water pool, a cold water tank, an evaporative cooler, a water inlet pipeline, a graphitization furnace water outlet pipeline, a cold water tank water outlet pipeline and a backflow pipeline, the cold water pool is connected with a cooling water inlet of a graphitization furnace through the water inlet pipeline, and a water supply pump is further arranged on the water inlet pipeline. A cooling water outlet of the graphitization furnace is connected with the cold water tank through a graphitization furnace water outlet pipeline, a water outlet of the cold water tank is connected with an inlet of the evaporative cooler through a cold water tank water outlet pipeline, and a booster pump is arranged at the water outlet of the cold water tank; the cold water tank water outlet pipeline is provided with an exhaust section located at the highest position in the cold water tank water o