Heat insulation protection device for heat distribution pipeline

The utility model discloses a heat insulation protection device for a heat distribution pipeline, which belongs to the technical field of heat distribution pipelines and comprises a bearing base, mounting seats are mounted at the top of the bearing base in a butt joint manner, an annular cover is fixedly mounted between the mounting seats, and a plurality of connecting and positioning structures are mounted between the bearing base and the mounting seats in a penetrating manner. An inner core protection sleeve piece is arranged in the top of the bearing base, a polyphenyl heat preservation layer is fixedly installed on the inner wall of the inner core protection sleeve piece, and the polyphenyl heat preservation layer is filled with a polyurethane foam filling layer; a vacuum heat insulation plate is bonded to the inner wall of the annular cover body, and a clamping structure is installed on the annular cover body in a penetrating mode. According to the technical scheme, the connecting and positioning structu