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The following article was published in our article directory on August 4, 2010.
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China is Developing a Vacuum High-speed Rail

Article Category: Automotive

Author Name: xia zihui

Running speed of comparable aircraft magnetic Evacuated Tube Vacuum High Speed Rail

According to the Ministry of Railways said on July 28, the world's fastest, longest operating mileage next year, ahead of the Beijing-Shanghai high-speed railway is expected to open to traffic. It is reported that China has built up 10,000 km high-speed rail. But you know that in addition to the construction of 350 km of high speed railway, the development of our country is still run faster, speed up to 1,000 km or 20,000 km of vacuum maglev train it?

2300 km from Beijing to Guangzhou, the distance, do not fly, take ground transportation, the same can be two and a half hours or even one hour to reach. This is our country is actively developing high-speed testing of vacuum tubes Road traffic.

Reporter from Traction Power State Key Laboratory of discussion group learned that they are currently developing the vacuum speed of 500-600 km high-speed train, this technology is expected to achieve operational after 10 years.

The next two or three years, laboratories will launch 600-1000 km per hour speed Evacuated Tube train small-scale model. According to current theory, this vacuum maglev train can reach 20,000 kilometers per hour.

Three-step vacuum high-speed rail

The first step common vacuum high-speed rail

Speed of 500-600 km, is expected to achieve operational in 2020, -2.03 thousand

The second step low vacuum magnetic

Used in low vacuum Road, magnetic levitation technology, more than 1,000 kilometers per hour, two or three years after the start of the third step of high vacuum levitation

Speed is expected over 4,000 kilometers, now in theory stage

Uncovered

Atmospheric environment should not be more than 400 km per hour trains

Southwest Jiaotong University State Key Laboratory of Traction Power members, academicians Academician accepted method later interview, said that currently any ground transportation, commercial operations, not faster than 400 kilometers per hour, or energy consumption, excessive noise, it is difficult accepted.

Academician, introduced high-speed vacuum Road traffic is to build a pipeline and cut off the external air will be a vacuum tube after pumping, in which the operating maglev train, in the absence of air friction and obstruction, the train will run to an astounding speed. And the pipe is sealed, you can run the submarine and climatic areas which are not affected.

The discussion group members Yaoping made a metaphor: "like a sewage pipe pipe as closely connected, is a fully enclosed space."

Vacuum magnetic levitation rail cheaper than the average cost

ZHANG Yao-ping introduced vacuum maglev train is running in a vacuum environment, but not inside a vacuum, high-speed passenger train ride would not be such a strange feeling of vertigo.

From the cost point of view, the current common rail cost 150 million per kilometer, the tunnel section in about 6 meters to 8 meters, while the vacuum magnetic pipe section is only 4 meters to 5 meters, can save a lot of steel costs, the costs cheaper than the ordinary rail.

For fares, Yaoping guess, if the technology was put into operation, its fares should be higher than the price of iron, but as technology continues to mature and updated, the price will be decreased.

Test story

Online to find material to introduce the concept of Evacuated Tube Transportation

ZHANG Yao-ping told reporters later, said method, a mechanical engineer in Florida wearing Rui • Oster in 1999 to implement the concept of vacuum Road Maglev transport to the drawings and patent applications in the United States.

In 2001, Rui Dai met with and became close friends of Yaoping the first time this technology into China.

ZHANG Yao-ping said: "I was working in Sinotrans, China's logistics and transport capacity are not keep up with rapid economic development, to address the most critical issue of transport logistics is the traffic to be safe and fast, I fast traffic on the Internet for the type of information, so they Rui Dai found the information so that we know through the network. "

In early 2002, Yaoping linked to the rail transport two leading experts - Southwest Jiaotong University locomotive vehicle dynamics expert experts Royal Academician, and magnetic elements, they all expressed a great interest in research that can be tested.

Year in November, Yaoping abandoned in state-owned enterprises to take more than 5000 yuan monthly wage work resolutely to the Southwest Jiaotong University, and these experts were vacuum Road traffic study, when a holding postdoctoral salary 1500 yuan.

Second half of 2002, Dai Rui and his wife came to China to help Yaoping and colleagues at the Southwest Jiaotong University set up "Evacuated Tube Transport Research Institute."

ZHANG Yao-ping introduced, then apply for the National Natural Science Fund, for a total of 3 times, finally in 2006 under the 260 thousand yuan for the project funds.

By the end of 2006, with project funding, including graduate students, professors, including more than 10 officers began the study.

Advantage of the vacuum magnetic levitation train

1. No vehicle power supply

2. Safe

3. Can still suspended, start consuming very little 4. Running noise

4. Body light, suitable for high-frequency grid, which greatly reduce the roadbed and track costs

National comparison

Sweden dominated the Sino-US Comparison of Chinese Technology

Academician introduction, the United States and Switzerland are also considering Evacuated Tube technology. The United States engage in high-vacuum Road transport, atmospheric pressure or even only one millionth of the outside world, but the cost is high, it is very difficult, it is difficult to put into actual operation.

Swiss put the tube on the underground tunnels, which greatly increases the cost of the same, and ultimately into the practical application difficult.

"Our program is better compared to them, as long as the tubes down to 0.5 atmospheric pressure, can significantly reduce the air resistance of the locomotive, so that would greatly reduce costs." Academician description.

Academician estimates railway in Xianyou De Gao Su, Zhi need per kilometer add a 20 million to be constructed Zhegeguandao a, increasing the cost of Jiang in the Hou Lai Chu Lai operating cost savings. Such programs, locomotive speed can more than 600 km / hour.

ZHANG Yao-ping, currently the world's total United States, Switzerland, three countries are studying Evacuated Tube magnetic levitation technology, China has started trial, the United States and Switzerland are still theory.

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