Chinese shipbuilders have worked hard for ten years to create a "gas boat"

The LNG LNG ship is recognized as the â€œPearl of the Crownâ€ in the shipbuilding industry. It brings together the most advanced science and technology in contemporary industry. The construction difficulty is unimaginable. From the development of LNG ships to the successful construction of foreign countries, they have gone through a long road for decades. They do not believe that China can build such high-end ships.
The Chinese shipbuilders have been grinding a sword for ten years, and they have created a "competitive ship" after hard work. Wu Bangguo, chairman of the Standing Committee of the National People's Congress, and Liu Yandong, State Councilor, have successively instructed that "this marks that China's shipbuilding industry has taken a big step." In July this year, China and Japan signed a contract for LNG shipbuilding projects, meaning that China not only means Can build high-end ships can also export to the world's shipbuilding powers.
China's shipbuilding industry has since entered a new era: from a shipbuilding power to a shipbuilding power!
Japan and South Korea once said that China could not pick this "Pearl"
At one time, thousands of ships in China sailed on the oceans every day, but it was rare to see that Chinese high-end ships were on the blue ocean. But now, there are Chinese LNG ships that are busy on many international waterways!
In the huge family of civil ships in the world, there are two kinds of high-end ships that are recognized as the â€œcrown pearlsâ€ in the world's shipbuilding industry. One is a luxury cruise ship and the other is a LNG LNG ship.
Whether a country is strong or not can be seen from the development of the shipbuilding industry. It is a symbol of the country's comprehensive strength.
Chinese shipbuilders had a dream at the end of the last century, proudly watching their own LNG ship rushing through the blue sea.
However, this kind of ship is too difficult to build. Only a few developed countries such as Europe, America, Japan and South Korea have mastered this construction technology. At the end of the 20th century, Chinese shipbuilders had a fierce debate about whether or not to build LNG ships. If it is not built, the Chinese shipbuilding industry will not have more outlets. Only by building and building more high-end products, Chinese shipbuilders will be able to shine on the world shipbuilding stage, which is also part of achieving the national strategic goals. The Chinese shipbuilding industryâ€™s high-level officials made a decision on construction.
As a result, the R&D work of Chinese shipbuilders to introduce, absorb and innovate LNG LNG vessels is fast-paced. In January 2001, Premier Zhu Rongji, when he met with Australian Prime Minister John Howard, said: The Chinese are fully capable of building LNG ships.
If you throw a voice, the world's shipbuilding industry and shipping industry will focus on Chinese shipbuilders. However, some shipbuilding powers do not believe that China can create such high-end ships like art, and even learn that Chinese shipbuilders have entered the stage of simulated shipbuilding. A Japanese ship company said in front of a Chinese shipbuilding delegation that you can't make such a ship because we have not made it easy.
In spite of this, the Chinese shipbuilders were really uncomfortable, but they further strengthened the belief of Chinese shipbuilders to build LNG ships as soon as possible.
From the development of LNG ships to the construction of successful LNG ships abroad, we have gone through a long road for decades and have had too much sweetness and bitterness. They think that although the Chinese are smart, they can shorten the development time by purchasing patented technology, but the conversion from drawing to real ship construction is a complicated and complicated project. Many technical difficulties are like a It is almost impossible to cross the mountain in front of it. Some high-ranking ship companies in South Korea are even talking out: Chinese people want to order LNG ships, they have to order from us.
Training a welder to 200,000
As a special ship for transporting liquefied natural gas, where is the construction of LNG ships difficult? For the simplest example, you need a large number of Yinwa steel welders with G certificates, but I am afraid that there is no one in China.
Some people may ask this question: If there are no qualified welders, how do Chinese people make good quality bulk carriers, container ships and other ships?
One of the difficult points of LNG shipbuilding is that its cargo tank liner and other parts are welded by a special material called Yinwa Steel. The welding requirements are very different from those of bulk carriers and container ships. The Yinwa Steel welder is finished. Although Chinese welders can build bulk carriers, container ships and other ships, they are not qualified to weld Yinwa steel. Therefore, China must build a large number of Yinwa steel welders to build LNG ships.
An excellent welder is trained into a Yinwa steel welder with a G certificate. Foreign shipyards need to train for more than half a year. It takes hundreds of such welders to build a LNG ship. The training fee for one person is more than 200,000, and training a common electric welding. It costs only a few thousand dollars. Mastering this technique, to undergo devil-like training, just a gesture, you must practice sweating for more than 10 days.
Building a LNG ship is a dream of many countries, but it can be â€œlongâ€ at a high peak, and it must have strong strength. When the Chinese shipbuilders visited the European shipyard, they felt that this was an extraordinary ship. In the construction of an LNG ship at a European shipyard, the factory also sent armed personnel to guard against the blockade of technology.
Later, Chinese shipbuilders finally obtained the film-type LNG ship manufacturing technology from the French Atlantic shipyard. The shipyard that built the "Dau Lele" aircraft carrier was touched by the courage of Chinese shipbuilders to dare to build LNG ships. But it is also very worried. Although there are technical drawings, after all, the production equipment, management capabilities and related The level of supporting companies is different, just like the grapes of France can make wines that are popular all over the world, but the grapes of Chinese races are not necessarily.
Although China has been able to build high-tech ships of internationally advanced product oil tankers, chemical tankers, ro-ro ships, container ships, etc., in the eyes of foreign shipbuilders, the real big ships are LNG ships and so on in the world. A ship called the "Pearl of the Crown".
Chinese shipbuilders also understand that they are pursuing the dream of building such a big ship.
With the big ship dream, we must do our best to realize this dream. At that time, Zhang Guobao, deputy director of the National Development and Reform Commission and director of the National Energy Administration, said from the national strategic point of view that in order to ensure the safety of China's energy, China must have its own LNG ship as soon as possible. He has repeatedly discussed with the China State Shipbuilding Corporation executives how to speed up the construction of LNG ships, and always pays attention to every achievement of China's research and development of LNG ships.
On the basis of the introduction of French technology, Chinese shipbuilders have intensively researched and developed 147,000 cubic meters of LNG ships. Itâ€™s the motto of Chinese shipbuilders to develop big ships. R&D factoryâ€”The tens of thousands of engineers and workers of Hudong Zhonghua Shipbuilding (Group) Co., Ltd. are working hard to realize this dream.
The first person of China G certificate shocked international experts
Surrounded by the beautiful sea of â€‹â€‹clouds, the blue waters at the foot, but Qin Yi did not have a little thought on the plane to appreciate these beautiful scenery. He was sent to Japan to learn to manufacture LNG ship welding technology and obtain a green pass for the construction of LNG ships. This young man who graduated from the technical school and who has achieved the best results in the sixth "Engineering Construction Cup" welding competition in the country shoulders the heavy responsibility of returning as soon as possible. He wants to teach this welding technique to more people. LNG ship construction reserves welding talents.
The completely different welding requirements, for Qin Yi, who has been used to many years of operating essentials and welding ideas, is undoubtedly a kind of transformation. It was very uncomfortable to start frowning at first, but it was clear that he had to adapt to this new welding requirement and must obtain the G certificate as quickly as possible.
However, even if the best welder in Japan obtains the G certificate, it will take at least three months of hard work. There is no shortcut to learning technology. During the day, Qin Yi carefully examined their movements, gestures, speed, and current regulation by Japanese experts. In the evening, I was obsessed with the translation and carefully checked the technical documents, that is, sleeping on the bed was not safe, and the welding essentials were drawn. Qin Yi, who is sitting in the audience, has already "fired into the magic."
After 4 weeks, he proposed to take the test. The Japanese experts were very surprised. They looked up and down the young Chinese young man. I thought that after learning for less than a month, I wanted to get a G certificate, not a dream.
The assessment experts came from the world-famous GTT company, and almost no smile on their faces. Qin Yi has seen a big scene. At this time, it is a bit nervous, but it still completed the assessment in the shortest time. The quality of the welding is like the automatic welding machine. Amazing! All the experts started not to believe, and later they looked at each other. In the surprised look, China's first G-welder was born!
In the future, another 16 Chinese welders received G-welding training. They are like 16 seeds. In the years to come, they will teach a group of Yinwa steel welding technicians who build LNG ships.
This is only a drop in the construction of LNG pre-ship training. The training of a larger scale is carried out vigorously in various fields of the manufacturing plant. It is large enough to prepare for production technology. It is as small as how to open a good class before, and more than 10,000 people are in a labyrinth. New training has been received in a variety of training courses. This is a homework that must be prepared before the official opening of the LNG ship.
A drop of sweat can't drip onto the steel plate
Fighting the stars, the sun and the moon are like a shuttle. As the date of construction of the LNG ship approaches, Chinese shipbuilders are clearly aware that if the construction fails, more than 1 billion investment will be lost, and the realization of the national strategy and national energy security strategy will be postponed. Will fail.
On the afternoon of December 15, 2004, on the CNC cutting production line of Hudong Zhonghua Shipbuilding (Group) Co., a bundle of blue flames shone, and the first LNG ship in China was officially opened.
Some people say that this light flame has opened up a new era of Chinese shipbuilding, because it marks that Chinese shipbuilders have officially embarked on a journey to enter the world's high-end products; others have no worries about why Chinese people have to step on it. Is this a very risky and extremely difficult road?
Speaking of the difficulty of building LNG ships, everyone said with emotion that this is not a general shipbuilding, but embroidered on steel plates.
Invar welding is a difficult problem. This is the main material for the construction of LNG ships. It is a special steel that is resistant to ultra-low temperature and is as thin as a piece of paper. In the welding, there should be no sweat dripping onto the top, and no fingerprints can be left. A small ballpoint pen pen can not fall on it, because it involves changing the Yinwa steel, only changing one piece, not changing all around, and a piece of Yin The cost of Wagang is staggering.
May not sweat during construction? May not leave a fingerprint? Maybe you didn't accidentally fall down without a pen holder? As long as one of them fails to do so, it will cost hundreds of thousands of hours of work to be repaired. One loss may be a million yuan, a million yuan, or even more.
The bright Yinwa steel shines brightly, but every inch of welding will make the welder feel deeply. This is to cut the shredded pork on the tofu, dance on the tip of the knife, take the chestnut in the fire, no extraordinary The will, quality and superb technology cannot be completed even with one inch of welding.
The welding of the cargo tank of a 130-kilometer LNG ship, as long as one point is not welded, is equivalent to the laying of a powerful time bomb. An LNG ship that is fully loaded with natural gas will cause a shipwreck caused by the leak of natural gas. If the LNG ship is unloading at the port, the consequences are even more terrible, and its energy can destroy a city.
He Jianghua has been in the production line since he graduated from university. The pain of shipbuilding, he has a deep understanding, the difficulty of shipbuilding, but also tasted.
He was one of the supervisors of the LNG ship, but he never encountered a ship with such a high construction requirement, but he never lost confidence. In order to build an LNG ship, He Jianghua did not return to his hometown in Sichuan for four consecutive years to visit his parents. Every morning, early and late, his children are not recognizing their father.
Generally, there are only a few hundred sensors on a large ship, and there are more than 4,300 LNG ship sensors, which is 10 times that of a conventional ship. These sensors are scattered all over the ship, and where an abnormality occurs, these high-sensitivity sensors will sound an alarm. Simply tuning them to the best position is a cumbersome and complicated project. There are a lot of sensors in the main cabin, the commissioning cycle can be completed in a few days, and the debugging of the mainframe, electric power, electrical appliances and other systems is more complicated, which is a test of the wisdom of Chinese shipbuilders and the test of the will.
The LNG ship, which is known as the "Ultra-Frozen Freezer", has to cool the natural gas to 163 Â° C for liquefaction, even if it is difficult to make this temperature in the laboratory. In order to maintain the low temperature that is not under the sun, it is necessary to make more than 50,000 wooden insulated boxes of different specifications. The precision of the production is silk. Many domestic and foreign supporting enterprises are picking up this cake, but there is no such a "good tooth". .
The difficulty of building an LNG ship is unimaginable. The Yinwa Steel trihedron was blocked at the time, and it was violently up and down. Some people have suggested that it is still imported from Japan, saving effort and effort. But in this way, the Chinese will never master this core technology.
Is it really like this by foreigners? Not convinced, useless, sigh, not to help, only to make a successful trihedron, in order to let others serve. It is necessary to ensure that the Invar steel with a thickness of only one sheet is not deformed at a high temperature of about 250 Â° C, and it is absolutely intelligent. Walking, eating, dreaming, all the shaking in front of the trihedron, this is the long-term heart disease of Qian Haibin, Xiang Yongqing, Chen Lifu and so on. Repeated trials and failures, repeated failures; repeated sprints, blocked again and again, did not shake their indomitable will. The successful flower finally blooms after countless painful failures, and the cheat to solve the welding deformation has been found!
On the day when the first qualified trihedron was born, the scene was a festive joy. French GTT experts liked the color of a worker's shoulder and said: You are doing better than Japan and South Korea.
Being better than foreigners has always been the goal that Chinese shipbuilders are striving for. They are not only facing their own shortcomings, but also deeply seeing the gap with the world's shipbuilding powers. They are more clearly aware that the key to building a strong shipbuilding power is to have an unwavering spirit. With the opportunity to build an LNG ship, it is necessary to do it at every stage, and to do more than others.
Because the LNG ship is different, its construction mode is different from the traditional shipbuilding method. The spirit of going to work and not hurting the fire line has always been praised by us. However, to build an LNG ship, we must go down the line.
Every day, workers must check their bodies before going on board. The heartbeat is fast, it can't be constructed; the blood pressure is high, and it can't be constructed; If there is injury, it is impossible to construct. This is the construction specification for LNG ships, and it is not allowed to go one step further.
Mild music can make people's emotions in good shape. This should be the scene that emerged after 8 hours of work. In the work of making LNG ship Yinwa steel parts, the music must accompany the operators.
These are the basis for ensuring that every inch of weld is flat and embroidered a beautiful "flower" on the steel plate.
"Special Forces" also took the lead
Special steam power propulsion system, special ultra-low temperature cargo tank transfer system, special ultra-low temperature cargo tank enclosing system, is the three core technologies of LNG ship, bringing together the most advanced science and technology of contemporary industry, one LNG ship is a high Technology Expo. If there is no "gold diamond", it is an idiot to talk about these difficulties.
Among them, the cargo tank containment system is the most technically difficult project in the construction of LNG ships, and each step forward is a tough battle. The task of undertaking this construction is a â€œspecial forces unitâ€: the average age of each project team member is 43 years old, of which 65% have deputy senior and above titles, and 73% have bachelor degree or above. This team has more than 500 "official soldiers", with superb skills, some of them still have stunts, some of which are well-known technical experts in the country. Even so, they have conducted various intensive training. Good steel must also be quenched so that the blade will be sharper.
The "special forces" faced the "scorpio gully" that was difficult to count in the construction. It was too nervous, frustrated, and even had tears, but more of it was rebellious and difficult to advance. The 9-year-old work log of Xiao Xiaohong, who is responsible for the coordination of quality work, recorded the sweetness and bitterness of this.
Although this "battlefield" does not see smoke, there is no voice, but every day there is a "special" battle.
The "special forces" have to combine various high-tech, high-tech product parts, like the Rubik's Cube, to complete the construction of the enclosure system, but how can the difficulty of playing the Rubik's Cube compare with these work.
The construction requirements are harsh and there is no room for negotiation. The installation and positioning of each component is rigid. The flatness of each square meter after installation of more than 500 kinds and more than 50,000 insulation boxes must be controlled within 1.2 mm, so each link After measuring the re-measurement, it will not meet the installation requirements after a short slack, not to mention the huge manpower and material resources of rework, and delaying the construction period of the LNG ship is to bear a huge fine.
Some people may question why it is difficult to install an insulated box. In fact, only those who participated in the installation of insulated boxes realized what was difficult and difficult. Insulation boxes of different specifications are arranged more neatly than the guards, and more than 50,000 insulated boxes of large and small sizes must be arranged in a neat manner. It is a big difficulty, and many "special forces" also feel gimmicks.
At the beginning, it takes half a day to install an insulated box, so that the monkeys can install these insulated boxes. Fortunately, there is an expert pointing, the installation speed is only a little faster.
The master is Li Hongchao, a laborer from Shandong. The subject of training in Japan is the installation of insulated boxes for LNG ships. As he sneaked a sigh of relief for the Chinese, he worked hard and finally became an excellent insulation box installer. Even his Japanese counterparts often praised him with a thumbs up. When the motherland summoned him to return to China to participate in the construction of the LNG ship, Li Hongchao was overjoyed.
Every road in the mountains and the bridges in the water, it is necessary to have the support of the bottom gas, the construction of LNG ships must rely on strength to speak. If there is no strength, the dream of a Chinese man-made ship will die.
Hudong Zhonghua Shipbuilding (Group) Co., Ltd. has developed detailed construction plans for each process of LNG ship construction. Not being unsure, it is the scientific rigor of Chinese shipbuilders to build LNG ships. The construction plan they developed was carefully considered on the end of the twig. For example, how to knock a nail when making an insulated box has a prescribed action.
On the journey to building high-end products, it must be covered with a reef shoal and a whirlpool. If there is no fear of stormy waves and the spirit of hardships and obstacles, it will not be able to open a green victory channel.
When debugging the high-voltage power system, the two transformers and the joint brake failed. The ship owner and the ship inspection look dignified. This problem is not solved. The high-voltage power system is like a paralyzed patient, and all the debugging work cannot be carried out.
Chen Guomin, an electrical expert who has not remembered how many ships have been built, has encountered numerous intractable diseases and can be removed from the disease. This time it seems a bit dazed. How can such a problem occur with closing? There must be complex reasons behind seemingly simple problems.
Originally, the drawings provided by the French side were flawed, and only one additional equipment could be used to â€œcut off the root causeâ€. Senior engineer Huang Guanhao quickly contacted the foreign manufacturers, the other party answered that it takes half a year to deliver, and at least 200,000 euros.
Chen Guomin, Huang Guanhao and others are uncomfortable in their hearts. Although they can afford this money, it is very uncomfortable to be controlled by people. What if they encounter similar problems in the future?
Guanhao does not believe it, so it must be done to solve the problem of switching power outages. He has a deep business knowledge, and he soon has a spectrum: to solve the problem of power jump with a set of control logic solutions. So he worked overtime overnight, and the next morning, he showed up and completed the design.
The re-closing began immediately, and the boat was silent. Everyoneâ€™s nervous heartbeat seemed to be able to be heard by each other. In particular, Huang Guanhaoâ€™s heart jumped even more. If the plan does not work, it can only pay hundreds of thousands of euros to the manufacturer. The construction period of the LNG ship will be delayed. If the ship is delivered within one day, it will pay a penalty of $150,000.
At the beginning of the closing, everyoneâ€™s heart mentioned the eyes of the blind. The LAS computer screen is displayed normally and there is no alarm sound from the sensor. "We are successful!" The quiet scene suddenly cheered. Huang Guanhao's nose couldn't help but feel a bit sour. He wanted to cry. He finally smiled and held a pair of hands that extended to him.
It is this kind of step-by-step attack by Chinese shipbuilders that creatively promotes the construction of LNG ships and makes the dreams of Chinese shipbuilders step by step toward the real side.
Exporting "Made in China" to the world's shipbuilding powers
On April 3, 2008, Chinese shipbuilders finally succeeded in picking up the "Pearl of the Crown" -- the LNG ship. The news of the successful construction of China's first LNG ship has aroused strong repercussions in the world shipping industry and shipbuilding industry. In particular, several shipbuilding power media have tracked reports on Chinese LNG carriers.
Wu Bangguo, member of the Standing Committee of the Political Bureau of the CPC Central Committee and chairman of the Standing Committee of the National People's Congress, instructed that the LNG ship delivered smoothly, marking a step forward for China's shipbuilding industry. Liu Yandong, member of the Political Bureau of the CPC Central Committee and State Councilor, stated that the successful construction of the LNG first-class ship marks a major step for China's shipbuilding industry in the field of high-end products, and is also an example of the introduction, digestion and innovation of key technologies.
The LNG ship research and development started in 1997 and was successfully built in 2008. After more than 10 years, it can be said that it has been a sword for ten years. Since then, Chinese shipbuilders have continued to build four LNG ships, and the sixth LNG ship has been built.
To this end, Zhang Guobao said in an article that in the future, China's economic development needs more and more advanced LNG ships. The Chinese shipbuilding industry will shoulder the mission to build a new high-quality LNG ship and drive a new round of Chinese shipbuilding industry. Take off.
China has created a "gas-building ship". This is not the end of the story. It is the beginning of the cloud journey. Chinese shipbuilders are working hard to develop a variety of larger and advanced LNG ships while building high-tech ships in the ocean. The three new LNG ships successfully developed last year have once again focused the world's shipping and shipbuilding communities on Chinese shipbuilders.
At the end of the year, the world-famous ExxonMobil Corporation/Japan Merchant Marine Mitsui Co., Ltd. signed an LNG shipbuilding project agreement with China National Shipbuilding Corporation in Beijing, indicating that Chinese LNG carriers will be exported abroad.
This is a moment of excitement for Chinese shipbuilders. As time went by, Chinese shipbuilders waited nervously and excitedly for the day when the construction contract was officially signed. The good news finally came. In mid-July this year, the world famous shipping company, Japanese merchant ship Mitsui and China officially signed the contract text for the construction of four 172,000 cubic meters LNG ships. In the warm applause, Chinese shipbuilders have not only harvested a contract worth billions. It means that China has opened the door to the world's shipbuilding power.
The sea, because of the Chinese LNG ship, has become more blue; but Chinese shipbuilders are not complacent because of the Chinese LNG ship, they have more big ship dreams, they are destined to withstand more challenges and pay more hardships.

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March 13, 2023