Overhaul device for high-pressure pipeline and using method thereof

The invention provides a high-pressure pipeline overhauling device and a using method thereof.The high-pressure pipeline overhauling device comprises two portal frames, first fixing devices are arranged at the two ends of the portal frames, pneumatic hydraulic jacks are arranged on the portal frames, second fixing devices are arranged at one ends of the pneumatic hydraulic jacks, and the first fixing devices and the second fixing devices abut against a water pipe; a repairing steel sleeve is arranged between the two second fixing devices; and the repairing steel sleeve clamps the water pipe. The device can effectively save the maintenance cost, reduce the economic loss, reduce the maintenance difficulty and the public opinion influence on the premise of rapidness, high efficiency and safety, and improve the repair effect. When the first fixing device and the second fixing device are installed on the two portal frames, operation can be conducted at the position far away from the water leakage position of the w