Replaceable gas overflow device of hydraulic circuit breaker

The utility model discloses a replaceable gas overflow device of a hydraulic circuit breaker. The device comprises an oil pump, an oil tank and connecting tees, the oil tank is higher than the oil pump; the connecting tee joint comprises a first connecting port, a second connecting port and a third connecting port; an oil filling pipe is arranged on the oil tank, an oil suction pipe and an exhaustpipe are arranged on the oil pump, the first connector is communicated with the oil filling pipe through a first oil pipe, the second connector is communicated with the oil suction pipe through a second oil pipe, the third connector is communicated with the exhaust pipe through a third oil pipe, a first stop valve is arranged on the third connector, and a second stop valve is arranged on the exhaust pipe. The utility model provides a replaceable gas overflow device of a hydraulic circuit breaker, which is simple in structure, simple in disassembly and assembly method and capable of avoiding leakage of hydraulic oil w