Galaxy Technology Empire

Huang Junjie is in the scientific research area at this time. The noise outside cannot affect him. As an enterprise with technology as its core, Galaxy Technology must continue to climb the technological tree.

Vacuum Engineering Research Institute, this is a special research institute.

The vacuum pipeline of the Taiwan Strait Cross-Sea Bridge was developed here.

They have successfully produced a vacuum pipe with an inner diameter of 2 meters. Of course, vacuum pipes of this level cannot yet be put into use.

The inner diameter of the pipe must reach at least 4 meters to be initially practical.

As for the vacuum pipeline of the Taiwan Strait Cross-Sea Bridge, the planned inner diameter of the tube is 6 meters. There are a total of 6 double lines, 3 from Pingtan to Hsinchu, and 3 from Hsinchu to Pingtan.

Among them, 2 are passenger lines, 2 are freight lines, and 2 are backup lines (can be used for special purposes).

Huang Haojie, head of the institute Chen Wenfeng, and Ma Sixing of the Academy of Sciences are looking at a section of vacuum pipeline that has been constructed.

"Boss, this experimental vacuum pipeline is 500 meters long. We have tested it many times and the sealing performance of the pipeline has met the standards. Now we are trying to use a tube with an inner diameter of 6 meters." Chen Wenfeng patted the wall of the transparent vacuum pipeline.

"How much vacuum can be achieved?" Huang Junjie asked as he looked at the vacuum pipe.

Ma Sixing on the side explained: "The vacuum degree reaches about 99.99%, and there is still one ten thousandth of the air remaining. This vacuum degree is the maximum limit that can be reached at present."

Huang Junjie nodded. In fact, there is no absolute vacuum environment in reality. Even in the universe, the so-called vacuum state is only relative.

Because there are various electromagnetic waves and particles in the universe, and according to the theory of wave-particle duality, electromagnetic waves are also a kind of matter. In this way, the vacuum is not empty, but has a lot of matter.

Therefore, now humans can only achieve a relative vacuum, but cannot achieve an absolute vacuum.

The vacuum degree of 99.99% is already a near-vacuum state, which has little impact on the maglev train running at a speed of 1,200 kilometers per hour.

In fact, the experts and scholars of the Academy of Sciences did not initially envision the need to achieve such a near-vacuum state. Their first stage was a vacuum of about 90%.

However, Galaxy Technology, which has very strong material research and development capabilities, can produce pipe materials with very good sealing properties.

In this case, just do it in one step to avoid having to change it again and again in the future.

The strength of the material not only improves sealing, but also reduces the amount of work. At present, the wall thickness of a vacuum pipe with an inner diameter of 2 meters is 23 centimeters.

As for the vacuum pipe with an inner diameter of 6 meters, Chen Wenfeng and his colleagues calculated that the pipe wall is between 73 and 75 centimeters. The specific results need to be made after the vacuum pipe is produced before the accurate pipe wall thickness can be determined.

If reinforced concrete is used, it will be similar to Hans's hollow reinforced concrete ball. The wall thickness is less than 3 meters, which is impossible. If it is too thin, the atmospheric pressure outside will directly crush the pipe wall.

If reinforced concrete is used as the pipe material, assuming the inner diameter of the pipe is 6 meters, the thickness of the pipe wall is required to be 3 meters.

Take the middle value of the pipe wall thickness of 1.5 meters, add the inner diameter of the pipe of 6 meters, and calculate the circumference of the reinforced concrete pipe. Multiply the diameter of 9 meters by 3.14, and you can get the circumference of 28.26 meters.

In this way, we can roughly estimate how many cubic meters of reinforced concrete pipes are needed for a length of 135 kilometers.

The length is 135 kilometers, the thickness (height) is 3 meters, and the circumference (width) is 28.26 meters. Multiply the three numbers to get: 11.4453 million cubic meters.

The price of ordinary reinforced concrete per cubic meter is 500 Chinese yuan, and the price of reinforced concrete used to make vacuum pipes is at least double that.

In other words, the material cost of a 135-kilometer reinforced concrete vacuum pipeline alone is 11.4453 billion yuan.

In addition, due to the weight of reinforced concrete pipes, the load-bearing design of the bridge piers must keep up, otherwise it will not be able to support the huge weight.

When using fiberglass composite graphene, about 2.15 million cubic meters will be used for 135 kilometers. The cost of one cubic meter of fiberglass composite graphene is about 2,300 yuan, which is equivalent to about 5 billion yuan in material cost for 135 kilometers of vacuum pipelines.

The price is less than half. Even if the profit issue is taken into account, raising the price to 7 billion yuan is still promising.

What's more, the performance and service life of FRP composite graphene are much better than those of reinforced concrete.

In addition, the weight is only about one-fifth, which means that the load-bearing design of the bridge pier can be reduced by two or three times. The load-bearing design of the bridge pier is reduced, and the cost is also reduced.

"Then please, Academician Ma, please continue research and development, and Wen Feng, let's go take a look at the situation of the second institute." Huang Haojie said with a smile.

"Mr. Huang, you are busy with your duties."

The two institutes of the Institute of Vacuum Engineering also study vacuum, but their directions are different from those of the first institute.

Academician Ma just now is the project leader of the first institute, and Chen Wenfeng is directly responsible for the second institute.

Huang Haojie asked as he walked: "Where is your research and development progress?"

"The high-strength elastic film from the Institute of Materials has been sent over. We have compounded the strong magnetic repulsion material and are now testing it." Chen Wenfeng reported the progress to Huang Haojie.

The high-strength elastic film is the "High-Strength Elastic Canvas" that Huang Haojie obtained previously. The elasticity of this high-strength elastic film is amazing. It can be stretched thousands of times and then quickly return to its original shape.

The two of them entered the laboratory of the Second Institute.

"Boss, look, this is a high-strength, elastic and magnetically repellent film we made based on your idea." Chen Wenfeng pointed at the back of the thick bulletproof glass and said.

Behind the bulletproof glass is a thin black rope. The diameter of the rope is about the same as that of an ordinary ballpoint pen.

"Try it and let me see how it goes."

"OK."

Chen Wenfeng quickly went to arrange the test. After a while, the black rope suddenly expanded, like an inflated balloon.

"Boss, look, this is the test report of the past few days." Chen Wenfeng handed over a document. After a while, the balloon deflated and returned to its black rope state.

Huang Junjie took it and flipped through the experimental test report:

"Can the vacuum expansion state be maintained for more than twenty minutes?"

"Yes! We did an extreme violence test five days ago. Without considering the service life of the material, the vacuum expansion state can be maintained for nearly 164 minutes." Chen Wenfeng explained.

Huang Junjie touched his chin and thought for a while, then took another look at the black rope.

"The current vacuum expansion diameter is about 15 meters. Wenfeng, you guys try to move to a larger expansion diameter as soon as possible. My goal is a vacuum expansion diameter of about 200 meters."

"We will arrange it as soon as possible, but boss, we are afraid that the power supply of the institute cannot keep up, and the testing venue cannot accommodate it." Chen Wenfeng quickly reported some problems.

"Let's do this! I will ask the Institute Management Committee to build two experimental bases in Bazhong City in Shu Province and Kaohsiung City in Dongdao Province for your two institutes to use." Huang Haojie created two bases with a stroke of his pen.

Gulu! Chen Wenfeng was also shocked by his boss's wealth and attention.

"I will definitely ask the people at the institute to complete the goal as soon as possible."

"Well! In addition, you need to estimate what the diameter of the rope core is needed to reach a vacuum expansion diameter of 200 meters? What is the weight per kilometer?" Huang Haojie then ordered.

"Boss, can I ask how long this cable is?" Chen Wenfeng asked carefully.

"At least 200 kilometers, if it can be 300 kilometers, it is best. In addition, when the vacuum expansion diameter of 200 meters can be maintained, the unit weight of the cable should be reduced as much as possible." Huang Haojie said the requirements.

"Boss, if you want to use this cable as a vacuum pipe for the Taiwan Strait Cross-Sea Bridge, I'm afraid it won't be enough to maintain the vacuum state. After all, the train needs to run for a long time." Chen Wenfeng reminded quickly.

"I have my own plan. You should complete the research and development design as soon as possible." Huang Junjie did not explain anything.

"Okay then!" Chen Wenfeng could only nod helplessly.