The "small head" in the heavy weapon -the mobile nuclear power charging treasure "Linglong One" is here!

The world's first land commercial modular small reactor -the "Linglong No. 1" reactor factory has a successful lifting of the upper tube of the steel -made safety shell. Will it become the future of domestic nuclear -powered aircraft carriers?

Written article/Reporter Wang Xueying Picture Editor/Chen Yongjie

New Media Editor/Lu Bingxin

A few days ago, at the Changjiang Nuclear Power Base in Hainan, the world's first land commercial modular small reactor "Linglong No. 1" reactor factory building was successfully lifted, laying a solid foundation for high -quality promotion of small heap engineering construction.

▲ On July 6, the "Linglong No. 1" reactor factory building was successfully lifted in the upper part of the steel -made safety shell of the steel shell (picture source/China Nuclear 5 company)

"Linglong No. 1" is currently the only three -generation nuclear energy pile of the world's official review of the international atomic energy agency. It has the characteristics of miniaturized design, modular deployment, non -capable safety, and integrated technology. The construction cycle is short, and it is more friendly to the environment. It can be built near cities and users. While power supply, it can also meet various purposes such as seawater dilution and industrial heating. The applicable scenarios are richer.

Small and flexible and safe

When it comes to nuclear power units, people's minds always think of the image of "huge and clumsy". However, the "Linglong One" that broke the soil in July 2019 gave the "nuclear power unit" a new interpretation - - As the world's first three -generation small reactor to pass the security review of international atomic energy agencies, the "Linglong One" independently developed by China Nuclear Group is the world's first commercial multifunctional modular module pile.

Different from a large heap of millions of kilowatts, the power generation power is only 125,000 kilowatts of "Linglong No. 1". According to the standard of "small piles below 300,000 kilowatts", it is only a small pile in terms of scale. However, "small" does not mean that the horizontal difference is the opposite, but small has a small advantage.

▲ "Linglong No. 1" first device hanging on the spot (picture source/China Nuclear 5 company)

In this regard, Song Dandong, the chief designer of Linglong No. 1 of China Nuclear Group, once made such an metaphor, "For a large pile, we can see it as a home desktop computer, including monitors, hosts, and keyboards. You can use it as a laptop at home, and its display, host and keyboard are concentrated together. " In other words, although "Linglong One" is small, it is a veritable "although the sparrows are all small."

"The radius of Linglong No. 1 is about half of the" piles' ", Yang Junhua, deputy head of the Civil Power Engineering Office of the Hainan Nuclear Power Engineering Office of China Nuclear Group, said that the conventional structural design of the nuclear power plant has a ground layout and a sinking layout, and" Linglong One One The "small pile is adopted by the sinking design scheme, and the system of the pile core is below the ground, so the safety of the project will be higher." Basically, it can prevent the impact of large aircraft, "he said.

It is understood that in order to further fully verify and ensure the security of "Linglong One", scientific researchers have also built the largest non -motion safety system comprehensive experimental tables in Asia for testing. A huge "golden bell cover". Specifically, the design of the non -motivated safety system can be used to prevent problems on the one hand, that is, the potential risks will be found in advance during the design stage to reduce the possibility of danger; on the other hand, if an extreme problem, such as the reactor Lost energy supply, non -motionless safety system can also use natural laws to ensure the safety of the reactor, and for a long time after the accident, no artificial intervention is required.

Different "building blocks"

In addition to small and fine, the emergence of "Linglong No. 1" also marked the appearance of my country to the forefront of the world in the world in the small modular reactor (SMR) technology in China. In this regard, many people can't help asking, what exactly does the "modular" in the nuclear power field refer to?

Before talking about "Linglong One", we need to understand the concept of SMR. Since the accident of Fukushima Nuclear Power Station, the global attention to SMR has become increasingly increasing. As one of its core concepts, "modular" means that the system and components of the reactor can be assembled in the factory and transported as a unit to the installation location. In other words, SMR is like a huge LEGO building block, which is made of "small building blocks" and finally pieces. These "building blocks" are designed in advance according to standards and then produced and produced in batches.

▲ Construction site (picture source/China Nuclear 5 Company)

Under normal circumstances, the construction of a large power reactor is adapted to local conditions, and the designer "tailor -made" units for a specific place. In contrast, because SMR is not a "customized product", it greatly reduces the cost of production manufacturing. It has achieved cheaper and higher cost performance than large power reactors as a whole. Working period. It is understood that "Linglong One" is to combine multiple components such as steam generators, reactors, main pumps, and main pipelines. It is modularized and assembled in batches in the factory, and then transported to the on -site installation and commissioning.

"'Linglong One" modularization can reduce the cost of manufacturing and also reduce power. "Song Dandong said:" Not only that, the integrated design of' Linglong No. 1 'can also reduce the accident rate. These have greatly improved. "Its security". He said that "Linglong One" was small because of its size and "less loading nuclear fuel, which can reduce the effect of radioactivity." Therefore, its emergency plan area can be controlled within the plant border. Under the blessing of these advantages, "Linglong One" can be "flexibly arranged to be closer to users and deployed near urban and industrial parks," he said. The large "mobile charging treasure"

As the so -called "sparrows are small, the five internal organs are all", compared with a million -kilowatt nuclear power plant units, "Linglong No. 1" is not only safer and reliable, more flexible, but also more widely used. "It can not only serve cities and industries, but also supply power such as marine resources development, and even make seawater desalination." Wang Yukun, an engineer of China Nuclear Corporation, said in an interview with the media.

Today, the upper part of the steel -made safety shell in the "Linglong No. 1" reactor factory in Changjiang, Hainan, Hainan has been lifted smoothly in advance, and the overall project is expected to be completed in 2026. With the advancement of the "Linglong No. 1" project, people have more new expectations -can Linglong No. 1 reach a wider stage? For example, on the sea?

According to Wang Yukun, because of small and flexible, "Linglong One" can also be installed on the ship. "For example, during the process of the ship equipped with it near the island, it can provide heating or even electricity for residents in the urban area. At the same time, it can also provide energy for industrial electricity and industrial energy supply in the city." : "As the ship continues to move forward, when passing through the maritime drilling platform, the ship with the" Linglong No. 1 "can also provide energy and electricity for the drilling platform, and even provide energy for the development of small islands."

▲ The "Linglong No. 1" reactor factory building on the upper part of the steel -made safety shell of the steel shell is lifted (picture source/China Nuclear 5 company)

Letting "Linglong No. 1" change into a "sea -mobile charging treasure at sea". Song Dandong believes that this idea has great potential. “在沿海发达的地区和城市，土地资源是非常宝贵的，我们如果建一个反应堆，那么它周围的设施建设就一定会受限”，他说：“可如果把它建到海上，离（陆地) Three or five kilometers, dragging the wires and steam pipelines directly, then it does not take up a lot of land. Not only that, after putting it on the sea, the cooling water required for the reactor can actually be taken on the spot. "

Energy -saving emission reduction to aircraft carrier military workers

For small heaps, Ye Qiyi, an academician of the Chinese Academy of Engineering, once praised it as a "changer of nuclear energy games" and believes that it can provide different nuclear power joint solutions in a more secure way, and the small and exquisite "Linglong One" will also be in In more fields, the development of China's development is unlimited.

First of all, in terms of energy conservation and emission reduction: As we all know, nuclear energy is an important green and low -carbon new energy source. The orderly promotion of nuclear power development is of great significance for my country's promotion of energy transformation and optimizing the energy structure. According to official data, "Linglong One" is expected to reduce carbon dioxide emissions by 8.7 million tons and 30,000 tons of nitrogen oxides each year after completion. needed for living. In addition, its construction cost, high cost performance, and flexible use, the promotion and application of "Linglong One" will undoubtedly strive to strive to be in my country for 2030 "carbon peaks" and 2060 "carbon neutralization".

The advantage of large heaps is mainly to achieve economics through power generation, while the advantages of small heaps are more reflected in heating, which is a distributed energy that depends on the location that is closer to users. "Under the requirements of the global energy production and consumer revolution era of carbon -dung peaks and carbon neutralization, good stability clean energy will have a strong bargaining ability," Song Danjon said.

In addition to helping energy conservation and emission reduction, "Linglong One" is also regarded as an important force to promote the development of my country's military industry, especially aircraft carriers. Because the overall volume is smaller, theoretically, "Linglong One" can be applied to the currently in service Liaoning and Shandong ships. Earlier, some people in the industry speculated that, in view of the "Linglong No. 1" single thermal power and electricity power, 385 MW and 125 MW can be reached. If two combinations can be configured on active aircraft carriers in my country, it is equivalent to providing 28 aircraft carriers 28 Thousands of horsepower -Nimitz -class nuclear -powered aircraft carriers who are currently 260,000 horsepower in the United States.

▲ Nimitz -class nuclear -powered aircraft carrier in the United States (Picture Source/MILITARY.com)

Relevant experts point out that "Linglong One" may only be a civilian version and needs to be improved in terms of volume, power and nuclear fuel abundance in the reactor in order to use the aircraft carrier. But this can also provide a technical foundation for the subsequent nuclear -powered aircraft carrier layout. We believe that in the future, we must have their own nuclear aircraft carrier.

(Part of the text source: CCTV Finance, China Nuclear Energy)

Produced: Popular Science Central Kitchen

Producer: Beijing Science and Technology News | Beike Media

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