Integrated pipe for filling water and exhausting

The utility model relates to an integrated pipe for filling water and exhausting, which comprises a water filling inner pipe. The utility model is characterized in that the periphery of the water filling inner pipe is connected with a main pipe body; a passage is arranged between the water filling inner pipe and the main pipe body; one end of the passage is provided with a backwater air inlet, and the other end is communicated with a backwater exhaust opening. The utility model has the advantages that the utility model is assembled on a hydraulic pressure fatigue detection device of a high and low pressure air bottle; when water is filled in a high and low pressure air bottle, the automatic outward exhaust can be realized, the water filling has no air-pressure resistance, and the filling operation is smooth; simultaneously, air can not appear in the air bottle after filling, and the accuracy of a detection result is ensured.