Jacketed pipe structure taking inlet stream of material pipeline as heat tracing

The utility model relates to a jacketed pipe structure taking inlet stream of a material pipeline as heat tracing. The jacketed pipe structure comprises a first reinforcing plate arranged above a material in the position of a stream inlet of a material pipe, which is close to an inlet of a steam pipe, and the jacketed pipe structure is characterized in that a second reinforcing plate is arranged in the position of the steam inlet of the material pipe at the inlet of the steam pipe, the second reinforcing plate is in the shape of L, one end of the second reinforcing plate is connected with the pipe wall of the steam pipe, the other end of the second reinforcing plate is bent like L in the material pipe, and then the plate surface is vertical to the axial line of the steam pipe, namely the plate surface is parallel to the axial line of the material pipe and extends in the material pipe along the length direction. According to the jacketed pipe structure disclosed by the utility model, overhaul and transformatio