Heat exchanger pipeline welding device

The utility model discloses a heat exchanger pipeline welding device, which belongs to the technical field of welding, and comprises a support base, two base plates are connected onto the support base, extension frames are arranged on the base plates, the extension frames are connected with a movable plate through thread adjusting components, and movable clamping frames are connected onto two sides of the movable plate and the base plates. According to the heat exchanger pipeline welding device, the driving assembly, the gear, the gear ring, the rotating ring, the rotating plate, the cleaning plate and the heating plate are arranged, the gear controls the gear ring, the rotating ring and the cleaning plate to rotate while the driving assembly drives the gear to rotate, the cleaning plate rotates around the welding position of the pipeline, and the welding position of the surface of the pipeline is cleaned and wiped; and meanwhile, the heating plate rotates around the welding position, preheating of the pipeli