On July 31, 2020, the first domestic suction tube jacket fan foundation constructed by China Shipbuilding Corporation Guangzhou Shipyard International Co., Ltd. was successfully shipped in Nansha, Guangzhou.

According to reports, the suction tube jacket has a total height of 63 meters and a total weight of about 1,560 tons. It consists of three suction tubes with a diameter of about 13 meters and a height of about 11 meters and an upper jacket with a height of 52 meters.

Lei Junlong, assistant to the general manager of Guangzhou Shipyard International Yonglian (Zhongshan) Company: The construction is the most difficult, one is high, and precision control is difficult, because its overall precision requirements are very high, basically ensuring the balance of the three legs , Including the center of gravity, the error is about two millimeters.

Zhang Xingguo, Technical Manager of the Foundation Project of Suction Tube Jacket Fan of Guangzhou Shipyard International: The suction tube is the core part of the fan foundation. The principle is like "cupping" on the seabed. When submerged on the seabed, only the inside of the tube is needed. The sea water is pumped out, so that a negative pressure is formed in the cylinder, so that it can sit on the seabed without the help of external force. In other words, a foundation construction operation can be completed without the aid of piling equipment.

The application of this technology reduces the reliance on large-scale offshore engineering equipment, greatly saves costs such as rock-socketed piling, and reduces offshore construction risks. At the same time, the application of this equipment will effectively reduce the pollution of the marine environment from the construction of offshore wind power projects.

It is reported that after the delivery of the suction tube jacket fan foundation, it will be used in the 300 MW offshore wind power project in Shapa Bay, Yangxi County, Yangjiang City, Guangdong Province, developed by China Three Gorges New Energy (Group) Co., Ltd., to help the Guangdong-Hong Kong-Macao Greater Bay Area. , Provide energy support for the economic development of Guangdong Province. (For reprinting, please indicate see Tao.com www.seetao.com) Seetao.com editor/Xia Changwang