CCTV News: On February 23, the fourth-generation marine engineering installation ships independently developed by my country, "Zhigao" and "Zhiyuan" were successfully completed in Nantong, Jiangsu. The main task of these two ships is to transport the fan, which we often call "big windmills", to the deep sea and carry out construction work such as installation. The completion of the manufacturing of these two engineering installation ships is of great significance to promoting the large-scale development of deep-sea wind power and accelerating the transformation of green and low-carbon energy.
According to the reporter, next to my country's fourth-generation marine engineering installation ship "Zhiyuan" is the marine engineering crane "Zhigao" that was completed at the same time as it. The two ships jointly designed and cooperated with each other to form the best combination of marine engineering installation in my country. They can operate in the sea area 100 kilometers offshore, providing strong support for my country's offshore wind power to advance into the deep sea.
This offshore wind power "Gemini" installation ship is the fourth generation of wind power marine engineering equipment in my country and the latest generation of wind power installation ship in the world. Compared with the third-generation offshore equipment, qualitative improvements have been achieved in terms of technology and performance. This combination of offshore engineering "Gemini" is one of the wind power installation ship combinations with the strongest wind and wave resistance, the best comprehensive installation capabilities, and the highest operating efficiency and intelligence level in my country.
Chief Engineer Zhang Weifeng introduced that it only takes two to three days for the installation of an offshore fan on the two ships, which is 30% higher than the installation speed of the third-generation wind power installation ship, and can withstand strong winds of level 16 and 12 Mi Hailang will become the core equipment for my country to promote the large-scale development of deep-sea wind power.
The "Popeye" and "Deep Sea Giant" installed on offshore fan
As the fourth generation of marine engineering installation ships in my country, the "Zhigao" and " The two ships of Zhiyuan have outstanding operating capabilities in deep sea hoisting, pile driving, etc. What are their unique designs and advanced technologies? Next, follow the reporter to board the ship and learn about these two powerful offshore wind power installation tools up close.
According to the reporter, these two ships are the best partners in the installation of marine equipment, and their abilities have their own strengths. The main functions of the "Zhigao" are lifting and foundation pile driving, like a "Popeye" with infinite strength. The giant barrel pile located at the stern of the boat, plus the 130-meter-long arm on the top, is its main hanging system. Look at the huge anchor here, it is its main hook, just like a human gripper, which can lift 3,600 tons of goods, which is equivalent to lifting 2,500 household cars at one time. It can rotate 360 degrees, which is twice as fast as the previous generation of offshore installation ships.
The reporter came to the "Zhiyuan" and found that the biggest difference between it and the "Zhigao" that floated on the sea is that the ship had 4 "long legs" of 125 meters, which is The gray frame behind the reporter. This allows it to penetrate deep into the seabed at the bottom of the sea and to carry out the installation of offshore wind turbines in a water depth of 70 meters. This columnar red tower is the crane of the Zhiyuan, which can lift goods to a height of 170 meters, which is equivalent to 58 floors. It is the final installation of offshore units, especially the installation of the nacelle and blades of the wind turbine unit.
So how did the "Zhigao" and "Zhiyuan" jointly complete the installation of a fan? First, the "Zhigao" lifted the steel pipe piles into the water with the "big iron arm", lifted the pile driving hammer, drove the steel pipe piles into the seabed, and completed the foundation pile driving. Subsequently, the "Zhiyuan" used its "long legs" to steadily penetrate into the seabed and raised its hull to provide a stable platform for offshore installation. It hoistes the tower on the foundation and installs the fan nacelle and fan blades one by one to the top of the tower, so that the fan is safe. The two ships are closely cooperating to meet the high-efficiency construction needs of deep-sea integrated offshore wind power with a single-unit capacity of 25 megawatts.
