Pipeline heat preservation structure

The invention discloses a pipeline heat preservation structure. The pipeline heat preservation structure comprises an inner heat preservation structure layer and an outer heat preservation structure layer, wherein the inner heat preservation structure layer is sleeved with the outer heat preservation structure layer, the inner heat preservation structure layer comprises heat preservation materialunits (2) and support structure units (4) which are alternately arranged in the circumferential direction of the pipeline heat preservation structure, the heat conductivity coefficient of the heat preservation material units (2) is smaller than or equal to 0.041 W/mk, and the compressive strength of the support structure units (4) is greater than or equal to 4 Mpa. The pipeline heat preservation structure can reduce heat loss of a long-distance heat transmission pipeline, can be used for laying of directly-buries steam pipelines and overhead steam pipelines, and has the advantages of simple processing, high adaptabili