Oil-water separator of gas compressor

The invention relates to an oil-water separator of a gas compressor. The oil-water separator comprises an oil-water separation pipe, a filter pipe and a connecting pipe; a separation cavity is formed in the oil-water separation pipe; an intake nozzle I and an exhaust nozzle I are arranged out of the oil-water separation pipe; the intake nozzle I, the exhaust nozzle I and the separation cavity are communicated; the filter pipe is internally provided with a filter cavity; a filter element is arranged in the filter cavity; an intake nozzle II and an exhaust nozzle II are arranged out of the filter pipe; the intake nozzle II, the exhaust nozzle II and the filter cavity are communicated; one end of the connecting pipe is connected with the exhaust nozzle I, and the other end is connected with the intake nozzle II; the connecting pipe consists of a ceramic lining layer, a high-temperature adhesive layer, a red copper shell layer and a coating layer; the high-temperature adhesive layer is arranged between the cerami