LNG (liquefied natural gas) is a clean, efficient and safe energy source, and is an important part of the future energy structure. LNG dual-fuel container ship is a kind of ship that uses LNG as the main fuel, which has the advantages of energy saving and emission reduction, reducing operating costs, and meeting international environmental protection requirements. The core equipment of the LNG dual-fuel container ship is the LNG fuel tank, which is responsible for storing and transporting LNG fuel to ensure the normal operation of the ship.
At present, there are three main types of LNG fuel tanks in the world, which are Type A, Type B and Type C. Among them, the B-type fuel tank is a self-supporting spherical or ellipsoidal pressure vessel, which has the characteristics of high capacity utilization, more flexible construction, and good safety performance. The design and construction of Type B fuel tanks is a highly technically difficult project, which is of great significance for improving the technical level and international competitiveness of China's shipbuilding industry.
Recently, the world's largest single-cabin 13,000 cubic meter B-type LNG fuel tank built by China Shipbuilding Dalian Shipbuilding has been successfully completed and delivered, filling the domestic gap of independent development of the whole process of this type of fuel tank. The fuel tanks are for a ship 2The 40,000 TEU LNG dual-fuel container ship is currently the world's largest single-cabin B-type LNG fuel tank, and it is also the first B-type LNG fuel tank independently designed and built in China.
The construction of this fuel tank was fraught with challenges and innovations. First of all, the design parameters and structural form of the fuel tank are the first attempts in China, and a large number of theoretical calculations and experimental verification are required to ensure that they meet the safety and economic requirements of the ship. Secondly, the construction process and quality control of the fuel tank are very complex, requiring precision welding, testing, heat preservation, painting and other processes to ensure that it has sufficient strength and sealing. Finally, the installation and commissioning of the fuel tank is also a difficult task, which requires precise lifting, docking, pressure testing, cooling and other operations to ensure its perfect match with the ship.
The successful delivery of the fuel tank is a major breakthrough in China's shipbuilding industry in the field of new energy ships, demonstrating the high-level technical capabilities and innovative spirit of China Shipbuilding Dalian Shipbuilding, and contributing to the transformation, upgrading and green development of China's shipbuilding industry. The application of the fuel tank will also bring more advantages to the operation of LNG dual-fuel container ships, and provide more guarantees for international and marine environmental protection. The development of the fuel tank has also laid a solid foundation for China's further development in the field of LNG fuel tank, and opened up a new space for China's independent innovation and international cooperation in the field of LNG ships.