Full-automatic emergency oil supply system of centrifugal water chilling unit

The utility model relates to a full-automatic emergency oil supply system of a centrifugal water chilling unit, which comprises a surge tank in communication connection with a control system, an external high-level oil tank and an emergency oil supply control assembly, a liquid outlet of a condenser is connected with an evaporator through a liquid outlet pipeline, and an internal oil duct is arranged in a centrifugal compressor. The emergency oil supply control assembly comprises a first liquid supply electric ball valve, an emergency air supply electromagnetic valve and an emergency oil supply electromagnetic valve, a first heater is arranged in the pressure stabilizing tank, a liquid inlet of the pressure stabilizing tank is connected with a liquid outlet pipeline through the first liquid supply electric ball valve, and an air outlet of the pressure stabilizing tank is connected with an external high-position oil tank through the emergency air supply electromagnetic valve. A second heater is arranged in the