Weld joint rotary heating device

The embodiment of the utility model provides a welding seam rotary heating device which comprises an arc-shaped gas distribution pipe and welding supports supported at the two ends of the gas distribution pipe, one end of the gas distribution pipe is closed, the other end of the gas distribution pipe is connected with a hydrogen pipe, and an oxygen pipe is connected to the hydrogen pipe; fixed flame outlets extending inwards are formed in the two ends of the inner arc face of the gas distribution pipe, adjustable flame outlets are evenly formed between the two fixed flame outlets, the fixed flame outlets and the adjustable flame outlets are communicated with the gas distribution pipe and provided with ball valves, and the outlet portions of the fixed flame outlets and the adjustable flame outlets are arranged in an arc shape. Compared with resistor heating, the rotary heating device for the weld joint has the advantages that the manufacturing cost and the use cost are greatly reduced; through the adjustable f