▎ 摘　　要

NOVELTY - The pipeline has an inner layer pipe, a middle winding layer and an outer layer pipe that are connected together. The inner layer pipes are made of polyethylene terephthalate (PE) or polypropylene (PERT). The intermediate winding layer is a high-heat conducting material wound around the pipe wall of the inner layer tube. The high heat conducting material is a natural graphite film, an artificial graphite layer, a graphene composite film or a graphite composite film. The surface heat conductivity is more than 400 W/mK, and the vertical thermal conductivity in the vertical direction is less than 20 W/mol. The outer layer tube is made of the PE or the PERT which is extruded, and covers the outer surface of the middle winding layers. USE - Deep ground hot water conveying pipeline for extracting hot water under underground of 2500 meters. ADVANTAGE - The deep geothermal hot water conveying pipeline can reduce the heat loss when the pipeline transports hot water in areas with low ambient temperature close to the ground, and achieve the effect of thermal insulation through thermal management, so that more heat in the middle and deep layers can be transported to the ground for use. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of the deep geothermal water conveying pipeline. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the deep ground hot water conveying pipeline for extracting hot water. (Drawing includes non-English language text).