Automatic nitrogen sealing equipment for raw material epoxypropane storage tank for producing propylene carbonate

The utility model relates to the technical field of raw material storage, and particularly discloses automatic nitrogen sealing equipment of a raw material epoxypropane storage tank for producing propylene carbonate, which comprises a raw material storage tank body, one side of the top of the raw material storage tank body is connected with a gas inlet pipe, and one end of the gas inlet pipe is connected with one end of a nitrogen conveying pipe. A self-operated regulating valve and a flow regulating valve are arranged on the nitrogen conveying pipe, the other end of the nitrogen conveying pipe is connected with the nitrogen storage tank, a pressure sensor and a breather valve are arranged on the raw material storage tank body, an exhaust pipe is connected to the other side of the top of the raw material storage tank body, and one end of the exhaust pipe is connected with one end of a nitrogen output pipe. The other end of the nitrogen output pipe is connected with the recovery tank, a self-operated regulatin