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Chapter 829 Xuelong 2 Nuclear Powered Icebreaker(1/2)

Yellow Building, conference room.

"Over the years, our Mingzhou Group has built many different types of ships. Although this icebreaker is the first time, we also have sufficient design experience to ensure that the project is mature and reliable." Qin Tao said to the leaders: "Now,

I will personally introduce our design plan to you."

In this world, Qin Tao was indeed building one for the first time, but before time travel, while the motherland was building aircraft carriers and preparing for the next generation of nuclear-powered aircraft carriers, the motherland had also begun planning big things like nuclear-powered icebreakers.

Around 205, Dongfang Nuclear Industry Group Company established a subsidiary: Dongfang Nuclear Group Marine Nuclear Power Development Company. The goal of this company is to promote the development of "nuclear energy in surface combatants, offshore platforms and other engineering fields" and to "support

Military-civilian integration of nuclear-powered ships”.

Of course, the final design was still handed over to 70 Research Institute. After all, this research institute had designed nuclear submarines and was the only unit with mature nuclear power system design and installation. Of course, this project had to be handed over to them.

Qin Tao had not been exposed to this project in detail, but he had never seen a pig running, and he had always eaten pork. With some reference to Lao Maozi's nuclear-powered icebreaker, Qin Tao made this design plan and presented it to the navy leaders.

After the report, the Mingzhou Group's aircraft carrier design department will then refine the plan.

"We know that the largest nuclear-powered icebreaker in Damao is currently 25,000 tons. After our icebreaker is built, it will become the largest icebreaker in the world and will have a profound impact on the Arctic routes. We have set the tonnage of the icebreaker at 50,000 tons.

tons, which is also determined by the power of our nuclear reactors."

Lao Maozi's largest nuclear-powered icebreaker is the Type 050 Leader-class icebreaker. The first one is the Damao. This icebreaker has a displacement of more than 70,000 tons. Although Lao Maozi does not have the ability to build an aircraft carrier, he still builds nuclear weapons one after another.

The power icebreaker shows the important role of this kind of ship for Lao Maozi.

However, the keel of this ship was laid in 2020. Later, due to some reasons, there was no movement after just laying the keel. It is not known whether it can be completed.

One level below it is the nuclear-powered icebreaker, with a full load displacement of 33,000 tons. This type of icebreaker was also delivered after the 21st century and is still missing.

What Lao Maozi is currently using is the Arctic-class icebreaker. It was built in 1975 and has a full load displacement of 25,000 tons. It is also the first water ship in the world to reach the North Pole. This icebreaker is still under construction, and the latest one

The 50-year-old Victory was launched in 2007.

Therefore, Dongfang now wants to build an icebreaker with a displacement of 50,000 tons, which will definitely become the largest icebreaker in the world.

As for this displacement, it is simply because its nuclear reactor is too big!

There is a big difference in power between nuclear reactors used on aircraft carriers and nuclear reactors used on submarines. The 50-megawatt nuclear reactor used on domestic submarines is already powerful, enough to allow domestic nuclear submarines to achieve world-class underwater speeds. But if used on aircraft carriers

, it will be like the Charles de Gaulle, lacking power and moving slowly.

Therefore, under the leadership of Krasnopolski, Minzhou Group is studying a new nuclear reactor for aircraft carriers. Its maximum thermal power has reached 700 megawatts. Even if the output power is reduced for insurance, it can still have

With a thermal power of 550 megawatts, one is equivalent to four submarine nuclear reactors.

Finally, it enters the steam turbine, or even turns it into electricity, which can have 20 megawatts, which is twice as much as the Laomaozi Arctic-class nuclear-powered icebreaker. Of course, the displacement can also be doubled, reaching the terrifying figure of 50,000 tons, ranking first in the world.

.

"We plan to use the Linglong nuclear reactor and directly adopt an electric propulsion solution. Its power output is 20 megawatts. We also plan to use a 40-megawatt gas turbine as an auxiliary engine."

When they heard this, everyone was stunned.

"Mr. Qin, do our auxiliary engines need such high power?"

"Yes, it's just an auxiliary engine. Just use a diesel engine."

"This is of course for safety reasons. We don't know whether nuclear reactors will cause problems when used in high-intensity collisions. If there is an accident, then we can still have gas turbines as power to bring our nuclear-powered icebreakers back.

." After Qin Tao finished speaking, he looked at everyone and said, "Don't worry, the navy only needs to pay for the nuclear reactor. We will pay for the gas turbine."

Everyone felt relieved immediately.

Lao Maozi's nuclear-powered icebreakers all have two nuclear reactors. This is mainly because their nuclear reactors are insufficiently powerful, but at the same time, this also forms a backup. If one of them fails, there will be another one. As for both

The probability of failure is too low.

However, Dongfang only uses one nuclear reactor, and one will have excess power. There is no need to use two. So, what if something breaks down?

If you only have one megawatt diesel engine, you will have no problem supplying power to the ship in normal times, but if there is a problem with the nuclear power system, you will be completely out of business.

If this happens, the 40-megawatt gas turbine can come in handy. Although it is only one-third of the output power of a nuclear reactor, it is definitely enough to get a huge nuclear-powered icebreaker out of trouble.

The only problem is that this thing is expensive!

Of course, expensive is for outsiders, but for Mingzhou Group itself, it is an internal purchase, and of course the price is also internal.

In fact, this is also a test for the gas turbine to see whether it can remain intact despite multiple collisions.

"If the power of the gas turbine and the nuclear reactor are output together, will our nuclear-powered icebreaker be faster?" Some people are curious.

"If all are used, the speed of the nuclear-powered icebreaker will exceed 30 knots, but it is not necessary. For an icebreaker, a speed of 20 knots is already very good. The design speed of our nuclear-powered icebreaker is

2 knots, but when walking on the ice, it can also reach the maximum speed of 2 knots, which is its most dazzling feature."

If the power of the icebreaker is small, it can only reverse, accelerate forward and hit the ice, then reverse again, and so on.

However, if the icebreaker has high power and large displacement, then use full power and keep moving forward. In this way, the icebreaker can continue to break the ice and reach a very high speed.

The task of the icebreaker is to open a channel for cargo ships, and the speed of cargo ships is generally not very fast. A dozen knots is normal, and anything over twenty knots is rare. Therefore, a nuclear-powered icebreaker with a speed of 2 knots is enough. No gas turbine is needed.

Work together.

"The gas turbine is only used as a backup, and we even hope that we will never use it." Qin Tao said: "When this icebreaker is decommissioned, the gas turbine can be disassembled and used on other warships."

Everyone nodded.

Once the nuclear reactor is started, it must run continuously. Even if it is docked, the heat of the nuclear reactor is enough to drive the auxiliary engines and provide a stable power supply to the entire ship. Therefore, there is no need for an auxiliary power system at all. Once this backup gas turbine is started,

Getting up requires consuming fuel, so of course it’s best not to use it.

"Mr. Qin's consideration is very thoughtful!" People present began to agree. The navy doesn't cost money, so it can pretend to be whatever it wants!

"This 120 megawatts of power only needs to be output to the propellers to have 100 megawatts, which is enough, so we plan to use two propellers, arranged on both sides of the stern. Our stern and bow are the same.

It has a V-shaped structure, which can not only break the ice frontally, but also break the ice when reversing." Qin Tao talked about the comprehensive design of the hull from the power system.

"At the same time, in order to increase the safety of the icebreaker, we adopt a double-hull structure."

Speaking of double-layer structures, the thing that most easily comes to mind is submarines. In order to be able to float on the Arctic ice, Lao Maozi's nuclear submarines all adopt a double-shell structure. In this way, even if the outer shell is damaged, the internal pressure shell will not be damaged.

There will be problems.

In fact, not only submarines, but also many surface ships will adopt double-hull structures, especially oil tankers. After the Exxon Valdez oil tanker accident in 2009, the International Maritime Organization stipulated that all oil tankers of more than 5,000 tons built after 1996

It must have a double-hull structure. After another oil tanker accident in 2000, the International Maritime Organization decided that only double-hull oil tankers can operate on the ocean from 205. In this way, in the event of an accident, the tanker outer shell is damaged, but the interior is still intact, and there will be no

Oil spill.

As for icebreakers, which are specialized ships that rely on collisions, double hulls can better ensure their safety.

"In order to improve the impact resistance, we will use high-strength steel for the bow and stern. At the same time, the partitions between the double hulls will be denser and filled with ballast water, which can better improve the icebreaker's endurance.

The impact force can also improve the safety of the hull." Qin Tao added: "These design experiences all come from the mature icebreakers of Lao Maozi."

There are a large number of Lao Maozi technicians in the Mingzhou Group, and some of them are familiar with the construction of nuclear-powered icebreakers, which is normal.

Of course, green is always better than blue. Dongfang's construction is more advanced, and the use of all-electric propulsion is one of them. Otherwise, if the nuclear reactor goes out, how the gas turbine will take over the work is really a big problem.

"Okay, let's move on to other designs of the hull, which are all designed to increase icebreaking capabilities." Qin Tao continued: "First of all, we want to introduce the rotary icebreaker."

Wu Shengli's eyes widened. When he told Qin Tao, he was refuted by Qin Tao, but now, he obviously accepted it.

"This device is equipped on both sides of the bow and has two large rotating blades. When necessary, it can clear the ice on both sides of the front of the ship."

“Why isn’t it arranged right in front?”

"Is it because of fear of causing navigation resistance?"

Listening to these questions, Qin Tao shook his head: "Of course not. We will install a throwing ice-breaking hammer at the bow of the ship. You can think of it as a pile driver."

Since we want to build a professional icebreaker, we must of course install some professional equipment. What Qin Tao mentioned is not just a fancy idea, but something that will be actually equipped on icebreakers in future generations.

Reamers are placed on both sides of the bow of the icebreaker, which can rotate and cut the ice surface. In front of the bow, an icebreaking hammer is installed. If you encounter an ice surface where the icebreaker cannot move, you can use this icebreaker directly to cut the ice surface.

Break it open!

"Well, this design is good. By the way, didn't you also say that you would use a jet engine to grill the ice?" Wu Shengli asked with a smile. You didn't agree with my plan at the time, but you still use it now.

Why don't you use your own plan?

"Well, I think the solution of directly using a jet engine is not very good, so I modified it." Qin Tao said.

“How to modify it?”

"Our icebreakers will store a certain amount of explosives. If we encounter difficult ice, we can just throw explosives and blast the ice!"

The previous methods are all physical methods and will not cause environmental pollution, but if the icebreaker is really trapped inside, who will care about whether it will pollute the environment! The last resort is to use explosives!

When the Yellow River freezes, the Air Force will take off bombers, drop bombs, and blow up the ice. Now that icebreakers have arrived at the North Pole, once they encounter ice that is difficult to break, they will of course use explosives.

The shock wave generated by the explosion can directly shatter the ice surface, no matter how thick the ice surface is, it will not block its impact.

"By the way, after talking for a long time, we still don't know the icebreaking ability of this icebreaker." said a leader.

"The icebreaker we designed has a maximum icebreaking capacity of four meters and can continue to move forward at a speed of knots on three-meter-thick ice," Qin Tao said.

Everyone opened their eyes wide, what?

The most advanced icebreaker in the country at present is a semi-finished product that Qin Tao purchased from the shipyard when he went to Lao Maozi to pick up junk. He brought it back and modified it. This icebreaker has a maximum icebreaking capacity of .5 meters, and can also use 0.5 meters.

It can continuously break through the 2-meter-thick ice layer at a speed of knots. Relying on its powerful ice-breaking ability, it has become the most advanced polar research ship in China and was named Snow Dragon.

Now our self-built nuclear-powered icebreaker already has this ice-breaking capability. The thickest ice surface in the Arctic is only three to four meters. In other words, it can sail at will in the Arctic!
To be continued...
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