Auxiliary device for welding pipeline with water

The invention provides an auxiliary device for welding a pipeline with water. The auxiliary device comprises a shell; the clamping mechanism is arranged on the shell, the clamping mechanism comprises two clamping jaws, the two clamping jaws can be arranged in a manner of being relatively close to or away from each other, and the two clamping jaws are used for clamping a sealing ring; the two butt joint mechanisms are arranged on the shell and symmetrically arranged on the two sides of the clamping mechanism, each butt joint mechanism comprises two rows of clamping rollers, the two rows of clamping rollers are used for clamping the pipeline and driving the pipeline to move, and the end of the clamped pipeline faces the clamped sealing ring; wherein the two butt joint mechanisms drive the two pipelines to move oppositely, and the ends of the two pipelines are in sealing fit with the two sides of the sealing ring correspondingly. According to the scheme, through the clamping mechanism and the two butt joint mech