▎ 摘　　要

NOVELTY - The pipe has an outer tube coaxially connected with a middle position of an outside of an inner pipe. Two ends of the inner pipe and the outer pipe are connected to form a vacuum cavity structure. A fluid medium is filled between the outer pipe and the inner pipe. The inner pipe and the outer pipe are connected with an iron rare earth alloy pipe body for coating a graphene layer. An inner wall of the inner pipe is connected with an inner wall of the outer pipe. The fluid medium is selected as a solid or liquid with low boiling point medium. USE - Three-section double-cavity three-state phase change superconducting heat exchange pipe. ADVANTAGE - The pipe has internal graphene, low boiling point medium, one- way heat transfer and better strength, and realizes three-section heat exchange structure for absorbing heat, and increases speed of heat exchanging in a rapid manner. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a three-section double-cavity three-state phase change superconducting heat exchange pipe.