At 10:30 on August 13, Zhejiang Zhoushan Power Supply Company's new submarine cable construction ship 'Qiafan No. 9' was officially delivered. After the ship is delivered, it will be used for the 500 kV Zhoushan network project cable laying project to ensure the smooth operation of the project. Advance.
As a new type of submarine cable construction ship in China, 'Qiafan No.9' has a total length of about 110 meters, a width of 32 meters, a depth of 6.5 meters, a maximum draft of 4.8 meters, and a maximum displacement of 14,300 tons, which is more than the construction ship currently in use. Cable No. 1 'larger and more stable. The form of flat bar can reduce the draught of the vessel and improve the capacity of the shoal and intertidal zone. The loading capacity of the 5,000-ton submarine cable provided by the vessel enables the construction length of the 220 kV submarine cable. From the original 30 km to 60 km, it will enhance the comprehensive capacity of submarine cable construction. In addition, the ship's endurance capacity is enhanced, which can meet 60 construction workers' 60-day continuous construction operations, and has large cross-sections such as marine power transmission and domestic offshore wind power. Long-distance submarine cable engineering capabilities.
'Qiafan No. 9' is also equipped with a series of advanced equipment. Among them, four 1800 kW suspended full-rotation rudder propellers installed at the four corners of the bow can provide power for the vessel in the cable laying facility, improving the flexibility of the vessel. Efficiency of the sex and submarine cable laying operation; DP power system upgrades the ship's anti-flow level from the original 3 throttling to 4 throttling, which can realize precise ship mooring construction in harsh and complicated environment; the first domestic shipborne purification of equipment The room can meet the technical and environmental requirements for the production of submarine cable joints with voltage levels of 220 kV and above; the single-point traction operation equipment system can make the traction force of the ship exceed 50 tons, realize the automation of wire rope storage and storage, and greatly improve work efficiency.
'Qiafan No.9' has both construction operation system and maintenance operation system, high degree of automation, and reserves equipment for underwater robots, helicopter platforms, advanced trenchers, etc., and expands powerful functions to create conditions for future ship upgrades. .
At present, Zhoushan Power Supply Co., Ltd. owns the submarine cable construction ship such as 'Qiafan No.9' 'Building Cable No.1' 'Zhoudian No.7' 'Zhoudian No.9', and masters the core technologies of submarine cable dumping, deep burial and overhaul. These submarine cable construction vessels have played an important role in the construction of the world's first five-terminal flexible DC project, Jiangsu Dongtai offshore wind farm submarine cable laying project, and more than 200 sea cables have been laid, with a total length of more than 2,800 kilometers.