Low pressure piping for maglev vehicles
A low-pressure pipeline, magnetic levitation technology
Active Publication Date: 2019-05-10
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to provide a low-pressure pipeline for magnetic levitation vehicles to solve the problem that the aerodynamic resistance of the vehicle body increases with the change of airflow movement when the magnetic levitation vehicle passes through the low-pressure pipeline
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[0020] The present invention will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.
[0021] Aiming at the fact that the air flow in the low-pressure pipeline for maglev vehicles has a great influence on the resistance of the vehicle body, and there is no equipment for slowing down the train resistance at present, the invention provides a low-pressure pipeline for maglev vehicles.
[0022] The top and / or sides of the main body of the low-pressure pipeline are provided with a plurality of shaft pipes, the shaft pipes communicate with the main body of the low-pressure pipe, the inner wall is smooth, and the inside is in a low-pressure state. A plurality of shaft pipes are arranged on the top and / or side of the main body of the low-pressure pipe, and both the shaft pipes and the main body of the low-pressure pipe are in a low-pressure state. When the train runs at high speed in the main body of the low-pressure pipeli...
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The invention relates to the magnetic levitation vehicle technology, in particular to a low-pressure pipeline used for the magnetic levitation vehicle. The top and / or sides of the main body of the low-pressure pipeline are provided with a plurality of shaft pipes, the shaft pipes communicate with the main body of the low-pressure pipe, the inner wall is smooth, and the inside is in a low-pressure state. In the present invention, a plurality of shaft pipes are arranged on the top and / or side of the main body of the low-pressure pipe, and both the shaft pipes and the main body of the low-pressure pipe are in a low-pressure state. When the train runs at high speed in the main body of the low-pressure pipeline with low pressure, the compression wave generated by the front of the train propagates forward, and part of it is reflected back by the pipe wall as an expansion wave. When the train passes through the shaft pipe, a compression wave will be generated again, which can offset the reflected expansion wave, weaken the micro-pressure wave, and reduce the air pressure change on the train surface. The influence of airflow movement on the stable operation of the car body is weakened as a whole.
Description
technical field [0001] The invention relates to the magnetic levitation vehicle technology, in particular to a low-pressure pipeline used for the magnetic levitation vehicle. Background technique [0002] Since the concept of the vacuum pipeline transportation system was proposed, a large number of patents and academic papers at home and abroad have carried out detailed design of this new system. The patent "Vacuum tube transportation system-consists of carriages running on rails in vacuum" describes a transportation system combining vacuum tubes and rail trains; the patent "Evacuated tube transport system with interchange capability" proposes to place high-temperature superconducting maglev trains It operates in low-pressure pipelines; the patent "External Power System External Thin-walled Vacuum Pipeline Maglev Transportation System" provides a vacuum pipeline with a smaller wall thickness, and arranges linear motors, track suspension mechanisms and other equipment outside...
Claims
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IPC IPC(8): B61B13/10
CPCB61B13/10
Inventor 邓自刚王博钱楠李基鹏
Owner SOUTHWEST JIAOTONG UNIV