Compound steel pipe structure and application thereof

Abstract

The invention aims to provide a compound steel pipe structure and application thereof. The compound steel pipe structure is characterized in that a steel pipe is used as a protective layer for reducing or isolating electromagnetism for a magnetic levitation vehicle and can control environmental noises of the magnetic levitation vehicle during high-speed running so as to realize the safe and environment-friendly running with magnetic levitation in a pipeline under a condition with a lower engineering cost. Compared with the prior art, the compound steel pipe structure can significantly reduce noise and electromagnetic environmental pollutions, and can also accord with requirements on environmental protection even a magnetic levitation high-speed transportation route passes through towns or dense residential areas, so the compound steel pipe structure can avoid construction isolation belts and save land resources.

Description

technical field [0001] The invention belongs to traffic and transportation engineering, and relates to a composite steel pipe structure, which is used for pipeline transportation. technical background [0002] At present, the maglev train has achieved a test operating speed of over 500km / h and a commercial operating speed of over 400km / h. However, the high-speed operation on the ground not only limits the technical development, but also produces noise, electromagnetic pollution and immigration. and other negative impacts on the environment. For example, at the speed of 400km / h, the noise level of the maglev train in Shanghai Pudong, 30m away from the center of the track, reaches 89dB. At this time, the electric field strength at 5m outside the compartment is about 0.318V / m, and the magnetic induction intensity is about 1.28μ / T. Because the pollution of maglev high-speed transportation exceeds the allowable level of human living environment, in order to reduce electromagneti...

AI Technical Summary

Problems solved by technology

[0002] At present, the maglev train has achieved a test operating speed of over 500km / h and a commercial operating speed of over 400km / h. However, the high-speed operation on the ground not only limits the technical development, but also produces noise, electromagnetic pollution and immigration. and other negative impacts on the environment. For example, at the speed of 400km / h, the noise level of the maglev train in Shanghai Pudong, 30m away from the center of the track, reaches 89dB. At this time, the electric field strength at 5m outside the compartment is about 0.318V / m, and the magnetic induction intensity is about 1.28μ / T

Because the pollution of maglev high-speed transportation exceeds the allowable level of human living environment, in order to reduce electromagnetic pollution, countries usually adopt the method of expanding the isolation distance, which greatly limits the further popularization and application of existing technologies, especially in cities. restrict

At the same time, although countries around the world have long been committed to the research of vacuum pipeline transportation, hoping to achieve ultra-high-speed transportation with low energy consumption, there is no high-speed transportation pipeline structure with electromagnetic and noise protection functions and low cost.

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