Pressure regulating system and immersed liquid cooling cabinet

The utility model relates to a pressure regulating system and an immersed liquid-cooled cabinet, the pressure regulating system is used for regulating the pressure in the cabinet, the pressure regulating system comprises a condenser, a fan and a liquid storage tank, the condenser is used for forming a cooling loop with the cabinet so as to enable gas in the cabinet to be transmitted to the condenser for liquefaction, and the liquid storage tank is used for storing liquid in the liquid storage tank. The cooling liquid in the condenser can flow into the cabinet; the fan is arranged on the cooling loop and is used for providing suction force to suck gas in the cabinet into the condenser; the liquid storage tank is provided with a cavity, the cavity selectively communicates with the condenser, and cooling liquid in the condenser can flow into the cavity in the state that the cavity communicates with the condenser. The immersed liquid cooling cabinet comprises a cabinet and the pressure regulating system, a coolin