Thermal-insulation supporting device used for pipeline

A thermal-insulation supporting device used for a pipeline comprises thermal insulation blankets and connection fasteners. The inner layer of each thermal insulation blanket is ceramic fiber cloth, the outer layer of each thermal insulation blanket is glass fiber cloth, needled ceramic fiber cotton is wrapped in the middles, a transition corner is well arranged for the inner layer and the outer layer of each the thermal insulation blanket according to the pipeline angle, and edges of the thermal insulation blankets are sewn. The thermal-insulation supporting device is formed by splicing the thermal insulation blankets, openings are formed in the upper portion and the lower portion, the glass fiber cloth edge covering and glass fiber thread sewing manner is adopted for splicing of every twoadjacent thermal insulation blankets, and the plane where sewing seams are located is parallel to the plane where the axis of the pipeline is located all the time and is perpendicular to the ground;and an installation seam i