Vacuum insulating pipe

Abstract

The invention discloses a vacuum insulating pipe. The vacuum insulating pipe comprises a pipe body. The pipe body comprises an inner pipe body (1) and an outer pipe body (2). The inner pipe body (1) is arranged in the outer pipe body (2). A vacuum cavity (3) is formed between the inner pipe body (1) and the outer pipe body (2) under the situation that the inner pipe body (1) is wrapped by the outer pipe body (2). A vacuum pumping connector (4) is arranged on the outer pipe body (2). Different-diameter sections (5) are arranged at the two ends of the inner pipe body (1). The caliber of the outer side of each different-diameter section (5) is larger than that of the inner side of the different-diameter section (5). The end portions of the different-diameter sections (5) are connected to the inner wall of the outer pipe body (2). A connecting looping opening (6) used for being connected with an adjacent pipe body is formed by the end portion of the outer pipe body (2) and the inner wall of each different-diameter section (5). A vacuum manner is adopted in the vacuum insulating pipe, the heat isolation and preservation performance of the vacuum insulating pipe is superior to that of a heat isolation and preservation material, the heat conduction coefficient is greatly reduced, and meanwhile the field construction amount is reduced.

Description

technical field [0001] The invention relates to the field of pipeline transmission, in particular to a prefabricated vacuum insulation pipe used for municipal heat supply transmission. Background technique [0002] As we all know, municipal heating needs to lay transmission pipelines, and heat can be transmitted to thousands of households by laying heat transmission pipelines. Considering the efficiency of transmission, it is very important for the heat insulation of transmission pipelines to ensure that as much heat as possible can be used for heating users and reduce heat loss during transmission. [0003] The transmission pipeline in the prior art includes a pipe body, and the pipe extension and heat supply transmission are realized by connecting the ends of multiple pipe bodies. Generally, the connection is realized by on-site construction welding, and the pipe body is covered with thermal insulation materials. Although the energy loss can be reduced by insulating mater...

AI Technical Summary

Problems solved by technology

Although the energy loss can be reduced through thermal insulation materials, with the aging of thermal insulation materials and the inherent defect of existing materials - high thermal conductivity, there is still room for improvement in efficiency

At the same time, the existing technology requires on-site construction, which greatly increases the amount of on-site construction and construction costs

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