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What is super high speed rail made in Sichuan

What is super high speed rail made in Sichuan

4hw.com.cn: China's high-speed rail was once hailed as one of the new 'four inventions'. It can be seen that the development speed of China's high-speed rail is amazing to the world, but we are not satisfied with this. The Chinese version of the' super high speed rail 'is in the process of being built, so what is the super high-speed rail? How fast is the super high speed railway? Let's have a look.

The reporter learned from the State Key Laboratory of traction power of Southwest Jiaotong University on March 12 that the world's fastest-growing vacuum high-temperature superconducting magnetic suspension straight track test line is being built in Chengdu, which will be completed by the end of this year and put into engineering test.

The reporter saw in the laboratory that engineers were carrying out equipment installation and debugging in a special pipeline with a diameter of 4.2 meters and a length of 140 meters. Previously, the vacuum tightness test of the pipeline has been completed.

The new test line will be tested in a low-pressure environment. The bottom of the test car is covered with specially made high-temperature superconductive materials, which can achieve the effect of superconductivity and magnetic suspension by relying on the low temperature formed by liquid nitrogen. The suspension height is 10 mm, the bearing capacity is 200 kg, and the test speed can reach up to 400 km. Previously, the test speed of the same type of "super high speed rail" of mask, the "technology geek" in the United States, was up to 355 km / h.

It is understood that this device will adopt linear motor ejection acceleration to accelerate the train model to 400 km / h within 140 m distance, and complete a series of tests such as train aerodynamics, coupling vibration of pipeline magnetic track vehicle body, running stability and stability during the driving process, laying the foundation for the next manned pilot test.

Previously, the laboratory has verified that the low resistance operation environment created by "maglev + vacuum" can effectively improve the speed of high-speed rail in the future. "This straight-line test line will greatly improve the test speed and further verify the feasibility of the & lsquo; super high speed railway in quasi vacuum and high-speed environment. "Said the researcher.

The laboratory is working with CRRC to develop a 1:1 sample vehicle capable of carrying 100 people. The practical prototype vehicle will have a suspension capacity of 2 tons / M and a suspension height of 15 mm, which can meet the requirements of the existing rail transit operation load.

The researchers said that the vacuum technology has matured and the high-temperature superconductor technology has formed solutions. Combining the two, the 'super high speed rail' is expected to break through 1000 kilometers per hour in the future.

However, it can not be achieved overnight. He explained that at present, the verification test is carried out, and the pilot test should be carried out before the project is put into production. There is still a long way to go before the final commercial operation. At the same time, as a new frontier field, it needs self-confidence in scientific research and support from all parties. The most lacking is financial and social support. One kilometer test line will cost about 200 million yuan. '

At present, the Chinese Academy of engineering, the Ministry of science and technology, the State Railway Administration and the state railway corporation pay great attention to this technology.