Chapter 504 Talking about nuclear discoloration
"When we designed the program, we took into account the elastic retraction of the steel plate. Therefore, we designed a certain processing margin. We also studied a lot of steel parameters and refined these parameters according to the differences of each steel plate." Hu Yong's face was also very excited: "Now it seems that our design is perfect."
"Well, not bad." Qin Tao is also very satisfied. This is only the first experiment, and it has achieved such satisfactory results. It shows that after these years of hard work, our CNC designers have become more and more experienced. .
There are already independent multi-axis CNC machine tools in China, and now this kind of bending machine has begun to enter the CNC era!
“This is definitely a revolution in our shipbuilding industry!” Zhao Changshui also lamented there. Although he has become the director of the machinery factory here, after all, he is still a shipbuilder. At this time, Zhao Changshui is more optimistic about this machine.
Qin Tao nodded, and then said: "Yes, it is a revolution in the shipbuilding industry. However, this machine has just been developed, and there must be many imperfections. After the prototype experiment is successful, we will first build a A large plate bending machine with an ordinary steel plate area is placed in our Mingzhou Shipyard. After repeated use, various problems were reported and then modified."
Zhao Changshui nodded: "Okay."
This is the only way for a new machine to go through. It must be tried out first and all possible problems that may arise must be solved. Of course, he didn't know that Qin Tao had another meaning when he said this.
“At the same time, our project must be highly confidential and no secrets can be leaked.”
With every innovation in technology, there will be winners and some will be eliminated.
The bending machine invented by Mingzhou Group will greatly increase the speed of shipbuilding, reduce shipbuilding costs, and gain an advantage in competition. At the same time, such a bending machine will also arouse the covetousness of many peers.
Other shipyards also want to improve the efficiency of plate bending and free themselves from heavy manual labor. However, they are unable to make similar products. Now that they have made it, they have to guard against being copied by them. past.
So, in the first few years, be sure to keep it a secret!
Even brother factories cannot obtain this product. This is an important product that Mingzhou Shipyard has developed and is popular all over the world. In a few years, it will not be too late to promote it to brother units. In the past few years, we have first try out!
This reason is also very good and others cannot say anything.
"Mr. Qin, we can be stationed in Mingzhou. If there are any problems, we will deal with them as soon as possible." Hu Yong also began to express his position.
“This should not be used. If there is any problem, we will contact you. Now, this plate bending machine has been successful. You should continue to work hard and continue to build more advanced shipbuilding equipment.”
Continue to keep up the good work?
Hu Yong's eyes lit up: "Mr. Qin, please speak!"
"Our domestic CNC shipbuilding equipment still lacks professional plate rolling machines." Qin Tao introduced: "Next, we need to overcome the technical difficulties of the three-roller plate rolling machine. This kind of plate rolling machine must be wide-body. Steel plates with a width of more than five meters can be processed by rolling the steel plate out of a steel cylinder."
Three-roller plate bending machine!
This is equipment that Mingzhou Shipyard, and even domestic shipyards, still lack. It is specially designed for special aircraft, and is used to build submarines!
If you want a submarine to dive into very deep water, you need a high-strength steel plate that is rolled directly into a cylinder. Therefore, it requires a lot of pressure. For example, in later generations, the largest three-roller plate rolling machine was used to process it. At that time, the pressure was as high as 8160 tons!
The greater the pressure of this plate rolling machine, the stronger the steel plate that can be processed, and the larger the diameter will be.
Domestic submarines can only build a few thousand tons because the plate bending machine is not powerful and the processing diameter is too small. Although Lao Maozi's submarine has an underwater displacement of tens of thousands of tons, it uses a double-shell structure with a pressure-resistant shell inside. It's not big, but it's because their plate bending machine is not powerful.
At present, the most advanced technology of plate rolling machines in the world is in Sweden. When other countries manufacture submarines, they all import plate rolling machines from Sweden.
The Kangaroo Country also wanted to build submarines, but they did not have such a plate rolling machine, so they transported rolled steel tubes directly from the United States. As a result, there was a problem during transportation, and several were scrapped. The welded submarines also failed. It cannot meet the design specifications. The error of this thing cannot exceed two millimeters!
A new generation of nuclear submarines is being built in China, and the nuclear submarines designed by Mingzhou Group are even more transcendent. With the current second-hand bending machines obtained from Lao Maozi, we can only build conventional submarines such as the Kilo class, but cannot build nuclear submarines with larger displacements.
So, after having the plate bending machine, the next difficulty to overcome is the plate rolling machine!
“Mr. Qin, are there any other technical requirements?” Hu Yong asked.
“The maximum pressure of this three-roller plate bending machine is more than 8,000 tons, and the diameter of the steel cylinder processed must reach a maximum of 13.5 meters.”
Hu Yong nodded, as if he knew something: "In this case, we can build a submarine with a displacement of 20,000 tons, and there is no need for a turtle back."
The displacement of attack nuclear submarines is not very large, and few exceed 10,000 tons. However, this is different for ballistic missile nuclear submarines. In order to be able to carry a large number of missiles, the displacement of such submarines will be rapidly expanded.
A large displacement requires a large casing. When the casing is large, the diameter must be large. What to do with a plate bending machine that is not that big?
Then just turtle back.
The emergence of the turtleback was a helpless choice for early ballistic missile nuclear submarines. The ballistic missiles that needed to be launched were large in size and long, exceeding the diameter of the pressure hull. There was no other way but to protrude.
The turtle's back of the Yankee's Ohio-class nuclear submarine is so small that it is almost invisible. It blends perfectly with the hull of the submarine. That is because it has an underwater displacement of 18,000 tons.
What about domestic ones?
Although Mingzhou Group’s Third Design Department has only designed nuclear-powered attack submarines so far, it will certainly also be involved in ballistic missile nuclear submarines in the future. Therefore, the displacement will definitely increase, and the corresponding plate bending machine must also be owned. Even if it costs billions, we still have to build this important weapon of the country!
It was already noon after the inspection of the bending machine project was completed. After having dinner in the machinery factory, Qin Tao did not leave, and then inspected the progress of the lift fan.
This project is directly related to the J-31A project, and Qin Tao attaches great importance to it.
Wang Jinbao introduced to Qin Tao with excitement: "Mr. Qin, after our many contacts, we finally found a domestic manufacturer that specializes in aircraft composite brake pads. We use the materials they produce as clutches. After testing, they can meet ten requirements." The service life is around 2 times!”
For an aircraft, it is absolutely intolerable to have to replace the clutch five times including takeoff and landing, but for the R&D personnel, this is already a huge breakthrough!
After all, they couldn't solve this problem at all before, not even once. Every time they were combined and separated, they were burned almost instantly.
Qin Tao nodded: "The next step is to optimize your control program and make the separation smoother and smoother, which can increase the service life to about twenty times. Then we will wait for the continued breakthroughs in domestic friction materials."
When I first saw the French Mirage 2000 braking directly without deploying a drag chute, the country was greatly stimulated and began to develop composite brake pads. Now, I don’t know whether they can be used on aircraft. At least they are provided to our own side. A convenience.
Of course, there is no best, only better, and they still have a lot of room for development.
"Now that these projects have been completed, it means that we can match the turbofan 15 engine." Qin Tao said: "This is really good news. Next, we need to publicly display our vertical The takeoff and landing power system is on!”
On the bending machine project, Qin Tao is very cautious and implements strict confidentiality measures, fearing that others will learn from it. As for the vertical take-off and landing power, he wants to publicly display it. This is of course to annihilate the 31A Wave the flag and strive to get more user investment.
"Of course. Next, our project can be placed in the Aerodynamics Research Institute. They have a special test bed and a turbofan 15 engine. We need to conduct matching experiments with them."
"Of course." Qin Tao nodded: "This is a phased result."
Qin Tao highly affirmed the progress of this project.
This project also has many purposes, one of which is to take the road of the Yankees and make the Yankees have no way to go!
Across the ocean, how is the development progress of the X-32 and X-35?
Qin Tao was a little curious.
The Boeing Company.
“This is the speed of our Boeing! We are far behind our competitors. Even if they laugh at our aircraft as flying toads, we are definitely the flying toads that took to the sky first!”
While other competitors are still working on detailed designs, Boeing's X-32 prototype has been built!
There are many reasons for this. For example, this project of Boeing is not a completely new project. The AVX-70 during the ASTOVL project has already laid the foundation for them. Later, when bidding, the project was just modified. That’s all.
So, they are making the fastest progress.
Now, looking at the prototype aircraft that is about to undergo test flight on the runway, everyone is very happy.
The test pilot carried his helmet and strode toward the aircraft. Under the gaze of countless people, the aircraft started, taxied, and climbed.
For the first test flight, they did not use a high-end vertical take-off and landing, but taxied to take off like ordinary fighter jets. After all, their aircraft was out, but the improved engine specially developed by Pratt & Whitney for this project was not yet available. appeared, they could only use the F-119 engine on the F-22 fighter jet, which did not have enough thrust to provide the power required for vertical takeoff and landing.
“How come its rolling distance is so long?” An air force officer present frowned.
“Its low-altitude performance shouldn’t be as bad as F4D, right?”
The Flying Toad uses a tailless delta wing structure, which is Dassault's signature layout plan: when the engine is not powerful, this layout can achieve good lift, climb rate, and high-speed advantages.
For the flying toad with a big mouth, this layout can make up for many of its shortcomings. Moreover, the thick delta wings can also store a large amount of fuel. Almost all of the planned nine tons of internal fuel will be stored in the wings. of.
This even resulted in the wings being unable to fold.
But another trouble with the tailless delta wing has emerged: poor low-altitude performance and poor takeoff and landing characteristics!
This prototype was the first to fly, and its huge flaws have been exposed. Even if it adopts advanced fly-by-wire operation, it cannot save its own flaws.
Unless it is changed to a canard layout or a normal layout, no matter which one it is, it almost means that the entire project has to be started from scratch!
Its technical flaws are not limited to this one. In the future, more flaws will be exposed.
The time has arrived in December 1995, and Qin Tao returned to Mingzhou with his wife and children.
On the second day after returning, Qin Tao attended the opening ceremony of the nuclear power plant.
If it were a conventional nuclear power plant, it would never be put into commercial operation without three to five years of construction. Thanks to the nuclear power plant in front of you, the planned nuclear submarine reactor was directly transplanted, and almost all final assembly was carried out in the factory. , and then transported directly by ship.
Flags were fluttering in the nuclear power plant, and colorful flags were fluttering. Qin Tao was also very excited.
"This represents the beginning of a new era!" Qin Tao stood in front of the microphone, looked at the countless guests, and said excitedly: "The power of the nuclear reactor in our nuclear power plant is 150 megawatts, and the power generation exceeds Forty megawatts will allow our Mingzhou Group to completely achieve self-sufficiency in electricity consumption. In the future, due to power shortages, many places may have power cuts, but we don’t have to worry because we have our own power station! "
In the 1990s, industrial development in various places, especially in southeastern coastal cities, has also brought a large demand for electricity. During periods of high load, there will even be power cuts.
Although Mingzhou Group has not been hit by a power outage so far, this does not mean that it will not happen in the future. Think about how you can use your own electricity in the future without having to worry about the risk of power outages, and it does not cost any money!
It is just an initial investment. Later, there will only be maintenance costs for personnel, and these personnel are sent by relevant domestic institutions. Mingzhou Group can only provide a subsidy at most.
This is definitely a good thing.
“Excuse me, is your nuclear power plant safe?” At this moment, someone below said in an unskilled tone.
Of course a large number of reporters will come to such a big event, and the Mingzhou Group cannot stop it, so there will be some nitpickers among these people.
Qin Tao looked at him. He was short, yellow-skinned, and could not roll his tongue when he spoke. Needless to say, he must be from the island country.
"In the world, nuclear power technology is constantly developing." Qin Tao said: "So far, the two most serious nuclear power accidents in the world were both first-generation nuclear reactors, especially the Chernobyl nuclear power plant accident. It is artificially caused by laymen leading experts.”
"Our nuclear power plant has reached the technology of the third-generation nuclear power plant in the world. It is built quickly, has high fuel utilization rate, and is safe and reliable." Qin Tao said: "If you want to worry, you should worry about your third-generation nuclear power plant." A first-generation nuclear power plant!"
There was a burst of laughter all around.
Island countries are severely lacking in energy. Therefore, island countries have launched a large number of nuclear power plant projects. Moreover, because they are island countries, their nuclear power plants are built directly on the seaside and use seawater to dissipate heat.
Normally there is no problem, but once there is an earthquake or tsunami, it may cause huge problems for their nuclear power plants.
These people are actually worried about themselves?
"Our nuclear power plant is absolutely safe and will not cause any problems. We have first-class technology and management experience!" The reporter became anxious and blushed: "Your nuclear power industry has just started and everything is still being explored. I hope you will We must pay attention to environmental protection and do not do things that damage the world's environment."
"Thank you for the reminder." Qin Tao looked at the guy with contempt on his face: "Our nuclear power plant is an integrated design. During its entire life span, which is from twenty-five to thirty years, it does not require When replacing nuclear fuel, we will not dismantle it after its life span, but will seal it as a whole. This will avoid any possibility of nuclear leakage. What about you? Your nuclear wastewater storage is almost full. ?Are you planning to pour it directly into the sea water?"
The other person stopped talking immediately.
The island country is vigorously developing nuclear power plants, but it has not considered how to deal with the nuclear wastewater at all. It will temporarily store it in cylinders. When the storage is full, it will threaten the whole world. Give me money, give me land, let me Solve it, if you don’t give it, I will throw it into the sea!
Such a country that has harmed the world’s oceans now still has the nerve to accuse the East? The discarded nuclear materials in the East are all buried deep underground and are processed on their own soil, without affecting other countries at all.
“Your nuclear reactor has such a long life? Doesn’t it need to add nuclear materials midway?” Other reporters asked curiously.
"Yes, we have adopted a special design, and this is also the current trend in the world. Nuclear submarines in various countries are pursuing the same life span of reactors and submarines, so as to avoid replacing nuclear fuel halfway through service. Our nuclear technology is in line with the world. Of course it can reach this level.”
When did Eastern nuclear technology become integrated with the world? A few years ago, weren't they still in contact with France and wanted to introduce French nuclear power technology?
Everyone is very curious, but this is a business secret and Qin Tao will not say more.
“Why doesn’t your nuclear power plant have a chimney?” someone asked again.
"Chimney? Why does a nuclear power plant need a chimney? It's not a coal-burning boiler." Qin Tao said disdainfully: "Only the backward nuclear power plants need chimneys, and those with chimneys will use a lot of fresh water and discharge fresh water. , there is the possibility of causing pollution, we are responsible and will not do such a thing!"
“Now, let’s start the nuclear reactor!”
The central control room began to operate. The cadmium rods that controlled the reaction speed were slowly withdrawn. The nuclear reactor began to generate heat, and the internal cooling water began to circulate slowly.
Half an hour later, Qin Tao came to the control computer room.
“The reactor is operating normally and the secondary circuit pressure has reached the rated value.”
“Get ready to start the turbine, get the generator ready!”
“Is it time to connect to the grid next?” Listening to the news coming from the control room, someone among the reporters outside asked curiously.
“It shouldn’t be necessary, they use a separate circuit.”
“No, I heard that DC power transmission is used and the connection to the grid is very simple.”
DC, grid-connected?
Everyone is a little curious.
“There’s a bulletin board over there, didn’t you see it?”
Billboards?
When they rushed over, they saw the illustrations and introductions on the side. It looked really high-end, and much more complicated than the Western method of directly generating electricity and then exporting it!
“Awesome, when it comes to high-voltage direct current transmission, they are the best.”
“Yes, the relevant components are all produced in their country, and their technology has reached the world’s top level.”
Everyone was sighing with emotion.
“The generator started successfully!”
At this time, the control room was still very tense.
According to Qin Tao's original plan, he directly used a twelve-phase generator, and then separated four three-phase electricity to supply different factories. However, later, he felt that this was a bit complicated, so he simply made some improvements.
The twelve-phase generator generates a lot of electricity, which is all converted into DC power through rectification, so there is no phase problem. Then it is inverted and converted into AC power, which can also be directly connected to the power grid.
For a period of time, the power station was in a trial operation state. The shipyard could not be completely dependent on the power station. If something went wrong, it would be blind. Therefore, grid-connected power generation solved this problem. Later, it gradually transitioned to the power station. .
Ma Gong also stayed in Mingzhou temporarily. He needs to take overall responsibility and provide solutions as soon as possible if there is a problem. After all, this twelve-phase generator with a rated power of fifty megawatts is also the first in the country. !
“This is a moment worth celebrating!” Lao Maozi present spoke.
As the designer of the entire nuclear power plant project, Krasnopolski had a confident smile on his face. This was already a mature reactor for nuclear submarines. It would be overkill on land and there would be absolutely no problems. As long as Just strictly control the construction quality. During the construction process of nuclear power plants, he was famously strict and would sternly reject any defective parts.
“Thank you, and thank you to everyone present.” Qin Tao said: “You are the heroes of Mingzhou Group!”
The Mingzhou Group's nuclear power plant officially embarked on a new journey on this day. Its commissioning solved the power supply problem of the Mingzhou Group and also reserved qualified power for the next nuclear submarine, even if it is built with a displacement of 20,000 Ton super nuclear submarine, there is no need to worry about not having a suitable nuclear reactor to use!
“No need to thank you, what we want is the project.” Krasnopolski said: “When can our new big shark project start?”
“Soon, I promise.” Qin Tao patted his chest.
(End of this chapter)