Pipeline section with cooling and leakage detecting functions and applied to low-vacuum magnetic levitation system

Abstract

The invention discloses a pipeline section with cooling and leakage detecting functions and applied to a low-vacuum magnetic levitation system. The pipeline section comprises a vacuum pipeline which is laid in the magnetic levitation system and is composed of a plurality of vacuum pipeline sections, the vacuum pipeline is a double-layer pipeline and comprises a vacuum pipeline inner wall and a vacuum pipeline outer wall, and a cooling pipeline and a middle interlayer are laid between the vacuum pipeline inner wall and the vacuum pipeline outer wall. The end of the cooling pipeline penetrates through the outer wall of the vacuum pipeline and is hermetically connected with an external cooling pipeline. The pipeline section has the advantages that the cooling pipeline is in the interlayer between the inner wall and the outer wall of the pipeline, and the waste heat in the pipeline is removed through the cold water, so that the direct radiation cooling of the high-temperature equipment parts is achieved. In addition, a pressure probe is arranged between the inner wall and the outer wall of each pipeline section, and the pipe section with leakage can be judged by analyzing the pressurevalue in the interlayer, so that the leakage detection difficulty during the operation process of the low-vacuum magnetic levitation track system is reduced. The device is widely applied to a low-vacuum maglev rail transit engineering system and has the wide application and industrialization prospects.

Description

Technical field [0001] The invention relates to a cooling system for rail transit; in particular, it relates to a pipeline section with cooling and leak detection functions applied to a low vacuum magnetic levitation system. Background technique [0002] With the development of cities, people's living standards continue to improve, the demand for travel timeliness, and the speed requirements for transportation continue to increase. Therefore, the ultra-high-speed and low-vacuum maglev rail transit system came into being. The higher the speed, the greater the aerodynamic resistance and the greater the residual heat generated. During the operation of the maglev rail transit system, trains operate in vacuum pipelines, and the heat emitted by trains and other equipment accumulates in the pipelines, and the temperature gradually rises. In order to avoid excessive temperature from affecting the stability of train operation, the normal operation of the equipment in the vacuum pipeline...

AI Technical Summary

Problems solved by technology

However, in a low-vacuum environment, the heat transfer efficiency of the traditional cooling system, which mainly focuses on convective heat transfer, will be seriously reduced.

In addition, the traditional cooling device needs to occupy a large installation space, and it is relatively difficult to install the traditional cooling device in it. It is necessary to expand the pipeline partially, which is difficult to construct and expensive to construct.

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