The picture shows China's high-temperature superconducting train
Now China's high-speed rail industry is developing rapidly. The Fuxing with a speed of 350 kilometers per hour has been put into use, but this speed has not yet reached China The limit of high-speed rail, a good news suddenly came not long ago, China's high-temperature superconducting train came out, this superconducting train can operate at a speed of 620 kilometers per hour, the speed is comparable to that of a sonic passenger plane, and it also has a very special Performance, that is, it can be pushed with one hand, so what is the technical principle of this train? Some Chinese experts said that this train has realized the combination of magnetic levitation technology and high temperature superconducting technology. It not only has the ability to travel as fast as the maglev train, but also has much lower energy consumption during operation. Its speed in the future It can be further improved. For example, if it is installed in a evacuated pipe, its operating speed may exceed the speed of sound.
The picture shows China's maglev high-speed railway
The current Chinese high-speed railway still uses the traditional wheeled high-speed railway technology, which relies on the rolling of wheels to run on the rails. Although this technology is simple and reliable, it increases with speed. , The centrifugal force on the wheels will become larger and larger. If the strength is not up to the standard or the speed is too fast, the entire wheel will shatter under the action of zero attraction, posing a huge threat to the operation of the train. Without this worry, this kind of high-speed rail levitates on the rails relying on the principle of magnetic attraction of magnets, and can run without touching the rails with wheels. The entire body is only affected by air friction resistance, so it can reach extremely high speeds.
The picture shows the Shanghai maglev train
, and another technological breakthrough that China has made this time is the combination of high-temperature superconductivity and magnetic levitation. High-temperature superconductivity refers to a relatively high A material that has achieved superconductivity at a temperature can be used to make a more powerful magnet, which produces a more powerful repulsive force, so that the train consumes less energy and can stay suspended.Therefore, the magnetic levitation high-speed rail manufactured by it with more powerful performance consumes less energy and can reach higher speeds. The standard operating speed of China's high-temperature superconducting maglev train has reached 620 kilometers per hour, which is equivalent to ordinary subsonic speeds. The speed of the passenger plane is up.
And this is not the end. Now China is still developing vacuum train technology, hoping to create a circular tube-shaped track, which will be vacuumed inside, so that the train will be suspended in a fully-vacuum pipeline to completely eliminate air resistance. In theory, there is no upper limit to the speed of China's vacuum train. Not only can it easily break through the speed of sound, it is possible to double or even triple the factor, but it also consumes less energy when running, even requiring only one hand. Can promote, the development prospect is very broad.
The picture shows the vacuum magnetic levitation train
. Perhaps many netizens have seen here and hope that this kind of train will become a reality as soon as possible, but it is a pity that this technology is now based on the current strength of China and the entire mankind. There is no possibility of large-scale application. High-temperature superconducting and magnetic levitation are both very expensive technologies. The ticket price of this high-speed rail will be very expensive, and may even exceed the ticket price. It is difficult for ordinary people to afford it. Therefore, this technology is more likely to only They are used in laboratories, waiting for technologies that can reduce their costs in the future before they are used on a large scale.
In fact, the existing high-speed rail is already sufficient for China’s rapid development. The plan that China is implementing now is to connect all major cities across the country with high-speed rail, and to build inter-city rail transit between cities. As a remedy, once this set of systems is completed, China's economy will usher in a new round of leap forward.
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