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"The Chinese version of the super high-speed rail will use the 'high-temperature superconducting magnetic suspension + vacuum tube' technology, and has begun to explore the feasibility of 1,500 kilometers per hour." Recently, Zhang Weihua, chief professor of Southwest Jiaotong University, revealed that the world's fastest vacuum high-temperature superconducting magnetic levitation The proportional model vehicle test line is being built in Chengdu and is expected to be built and put into trial testing by the end of this year.

The test speed exceeds the speed of sound and is expected to reach 1500 km.

Zhang Weihua said that the "multi-state coupled rail transit dynamic model test platform" undertaken by Southwest Jiaotong University is to carry out different magnetic suspension mode proportional model vehicle operation tests, including high temperature superconducting, in a vacuum pipeline capable of simulating different low pressure environments at 1500 meters. In the magnetic levitation mode, the test speed exceeds the speed of sound, and theoretically it is expected to reach 1,500 kilometers per hour.

Super High Speed Rail: High Temperature Superconducting Magnetic Suspension + Vacuum Tube Technology

High-temperature superconductivity refers to a zero-resistance effect of a superconductor made of a special material in a liquid nitrogen environment at minus 196 degrees Celsius. In other words, after placing the high-temperature superconductor on the permanent magnet track, the train can have a stable guiding force and a levitation force at a low speed or even a static state.

Mature vacuum technology, coupled with the formation of high-temperature superconducting magnetic suspension technology, the combination of the two is the future "super high-speed rail." The "polymorphic coupled rail transit dynamic model test platform" has increased the basic research of the combination of the two.

Zhang Weihua introduced that, previously, the laboratory has verified that the low-resistance operating environment created by “Maglev Suspension + Vacuum” can effectively improve the speed of high-speed rail in the future.

As of the end of 2017, China's high-speed railway operation mileage reached 25,000 kilometers, about 2/3 of the total mileage of the world's high-speed railway operation, the design speed is up to 350 km / h - 380 km / h, and the number of on-line operating trains reached 5,200. A real high-speed railroad.

From China CRRC, China Railway Construction and other news, China's high-speed rail is currently conducting 400 km/h technical research.