Prefabricated heat insulation layer heat preservation pipe connecting piece

The utility model provides a prefabricated heat insulation layer heat preservation pipe connecting piece, and belongs to the technical field of pipe heat preservation. Comprising an upper buckling cover body and a lower buckling cover body, the upper buckling cover body and the lower buckling cover body can form a complete cylinder, heat preservation cavities are formed in the upper buckling cover body and the lower buckling cover body, the heat preservation cavities are filled with heat preservation layers, and connecting assemblies are arranged at the connecting positions of the two ends of the upper buckling cover body and the connecting positions of the two ends of the lower buckling cover body. The two buckle cover bodies are adopted to wrap, clamp and fix the inner pipe seam of the thermal insulation pipe, and the thermal insulation layer is arranged in the buckle cover body, so that a thermal insulation effect on the pipeline can be achieved, and the effects that the surface of a pipe fitting is effect