With more than 8,600 square kilometers of sea area and nearly 1,300 kilometers of coastline, Wenzhou has unique advantages in developing a marine economy.In recent years, the local government has coordinated deep-sea wind energy resources, systematically laid out the entire offshore wind power industry chain, and made every effort to build a 100-billion-level offshore wind power industry cluster, making steady progress towards a national new energy production center and application demonstration city.The Wenzhou Marine Economic Development Demonstration Zone is the core position of this "Dark Blue Track".
In recent years, with the gradual saturation of offshore wind power resources, the development of deep seas of more than 50 meters has become a must-answer.But there are typhoons, huge waves, and complex ocean currents, and ordinary wind turbines cannot stand at all.A scientific research team in Wenzhou gnawed hard and conquered the integrated coupling simulation technology of wind turbines, floating bodies, and mooring systems. They built the world's first 16-megawatt floating wind turbine, with a total weight of over 500 tons. It can stably withstand a Category 17 super typhoon, directly breaking the water depth limit of traditional fixed wind turbines.Moreover, many indicators have refreshed the global floating unit record.But a new problem came immediately. A giant wind turbine hundreds of meters high was like a "steel floating house" floating in the deep sea. How could it take root and stand firm in the sea nearly 100 meters deep?Then you must use a high-energy pile driving hammer.
In the past, pile driving hammers imported from abroad were "tailor-made" for the mild and typhoon-free sea areas of Europe. However, they were easily acclimatized in the complex sea conditions of the East China Sea with thick mud and strong typhoons.This problem can be solved by a local company in Wenzhou. They have developed the world's largest single-action hydraulic piling hammer specifically for my country's sea conditions, which can stably drive piles into the deep sea bed.
Linden, the person in charge of the company, told reporters that underwater piling hammers, especially those with high energy, can now be made in our country besides the Netherlands and Germany, and they are fully competent.This makes them very proud.After mastering the core technology, they have also extended and innovated. They not only provide piling hammers for offshore projects, but also provide a complete set of Chinese piling solutions. At present, artificial intelligence and AI have been applied to piling equipment. An ordinary worker can operate it in a few simple steps without spending a lot of manpower.
Floating wind turbines will keep swinging with the waves day and night, and it will not take long for ordinary submarine cables to have root fractures.Another submarine cable company teamed up with an in-house scientific research team to overcome industry problems and independently developed a 66-kilovolt optical fiber composite dynamic submarine cable, which can adapt to the year-round reciprocating swings of wind turbines, is bendable, corrosion-resistant, and can withstand the high pressure of 100 meters deep sea, completely breaking the long-term overseas monopoly.
According to statistics, the average annual utilization hours of Wenzhou’s offshore wind power exceeds 3,200 hours, indicating huge development potential.At present, the city has deployed 17 offshore wind power projects with a total planned capacity of over 20 million kilowatts, accounting for more than half of the total in Zhejiang Province.Today, several leading companies each occupy a key link, forming a closed loop of the entire industrial chain within a radius of ten kilometers, allowing deep-sea wind power equipment to be "manufactured locally, installed nearby, and directly shipped to sea."
(Headquarters reporters Zhang Yan, Han Dong, Liu Yingjie)
