▎ 摘　　要

NOVELTY - The utility model claims a water upper pipeline heat preservation device, comprising a pipeline, the surface of the pipeline is coated with graphene heating film; the outer side of the graphite heating film is provided with a photovoltaic battery, the graphite heating film electrically connected to the photovoltaic cell. The utility model a water pipeline heat preservation device using graphene material with high strength and high heat conductive coefficient; it is not only provides heat quantity, but also protects the surface of the pipeline, the utility model has reasonable structure design, easy manufacture, convenient use and installation, low cost, long service life and so on.