▎ 摘　　要

NOVELTY - The utility model claims a prefabricated based on steam pipeline heat preservation shell of waste heat recycling and graphene with high heat conducting performance, comprising: a steam main pipe, a heat preservation structure periphery of the steam main pipeline, one or more cooling short pipes; the blind plate set at the lower end of the cooling short pipe, a first branch pipe, and a condensed water pipeline, on the outermost insulating layer of the insulating structure and the outer insulating layer is provided with a heat distribution structure layer, after traveling a certain distance into the heat distribution structure layer condensed water pipeline led out from the steam main pipeline insulating structure. by the heat distribution layer the outermost insulating layer condensed water heat distribution to the main steam pipeline is connected with the secondary outer layer insulated layer at the interface, thereby improving temperature at the interface, reduce pipeline loss of the steam pipeline, the utility model is suitable for municipal steam pipe net, a steam pipe network especially long-distance conveying, the conveying distance can reduce the heat loss of the steam pipeline increasing steam, saves the operation cost of the engineering.