Long-distance low-temperature transfer pipeline

The utility model belongs to a transfer pipeline, in particular to a double-layer vacuum pipe structure applied to the field of long-distance low-temperature liquid transfer. A long-distance low-temperature transfer pipeline comprises an inner pipe and an outer pipe; the end parts of the inner pipe and the outer pipe are connected by an end surface film box; the outer pipe is connected with an outer corrugated pipe joint of a vacuum compensator; the inner pipe is connected with the vacuum compensator; and an evacuation valve is arranged on the outer pipe. The long-distance low-temperature transfer pipeline has the advantages that a thin-wall structure can be used for effectively lightening the weight of the pipeline under the conditions of satisfying the mechanical properties like strength and stability; high-purity carbon dioxide is filled in a vacuum sandwich; under a low-temperature working state, the carbon dioxide is condensed into a solid like frost to increase original vacuum degree and improve heat in