Flow guide device for welding spiral steel pipe

The invention provides a flow guide device for spiral steel pipe welding, which is adjustable in radian of a supporting plate and wide in applicable pipe diameter range, and relates to the technical field of spiral steel pipe welding. A flow guiding device for spiral steel pipe welding comprises a top plate, a pressing mechanism and a supporting plate, the supporting plate comprises a plurality of sub-supporting plates, a conductive part is arranged on one side of each sub-supporting plate, the sub-supporting plates are sequentially hinged end to end through hinged shafts, and the axes of all the hinged shafts are parallel; the top plate is arranged on one side, opposite to the conductive part, of one sub-supporting plate and is fixedly connected with the sub-supporting plate; and the pressing mechanisms are mounted on the top plate and are arranged in one-to-one correspondence with the remaining sub-supporting plates so as to be used for pressing the remaining sub-supporting plates on the surface of the work