Vacuum transmission pipe and connecting structure thereof

Abstract

The invention relates to a vacuum transmission pipe and a connecting structure thereof. The vacuum transmission pipe is a multi-layer vacuum heat insulation pipe composed of at least three layers of stainless steel pipelines; wherein a vacuumized inner layer heat insulation pipe is arranged between an inner layer pipeline and a middle layer pipeline, a vacuumized outer layer vacuum heat insulation pipe is arranged between an outer layer pipeline and the middle layer pipeline, a middle layer vacuum heat insulation pipe is arranged between middle layer pipelines, two adjacent vacuum transmission pipes are connected by a connecting piece along axial direction, and end face joint thereof is provided with a sealing element. The invention has the advantages of simple structure, good heat preservation effect, long vacuum life and maintenance convenience and is especially applicable to heat transmission in the fields of solar power generation, heating and chemical industry.

Description

technical field [0001] The invention relates to a high-temperature medium conveying pipe, in particular to a vacuum conveying pipe and a connection structure for conveying high-temperature steam, oil or molten salt, and is suitable for heat transmission in the field of solar power generation, heat generation and chemical industry. Background technique [0002] Heat transfer pipe is a pipe widely used in solar power generation, heating and chemical industry. Existing heat transfer pipes generally wrap one or more layers of insulation materials on the outer surface of ordinary pipes. In the field of solar power generation, heat transfer is required Pipes have a good thermal insulation effect, so it is necessary to wrap multiple layers of thermal insulation materials on the outer surface of ordinary pipes, resulting in relatively thick heat transfer pipes and unsatisfactory heat transfer effects. Contents of the invention [0003] The purpose of the present invention is to so...

AI Technical Summary

Problems solved by technology

[0002] Heat transfer pipe is a pipe widely used in solar power generation, heating and chemical industry. Existing heat transfer pipes generally wrap one or more layers of insulation materials on the outer surface of ordinary pipes. In the field of solar power generation, heat transfer is required The tube has a good thermal insulation effect, so it is necessary to wrap multiple layers of thermal insulation material on the outer surface of the ordinary tube, resulting in a thicker heat transfer tube, and the heat transfer effect is not ideal

Images