Mooring device for floating body in middle-shallow water area and mounting method

Abstract

The invention discloses a mooring device for a floating body in a middle-shallow water area and an installation method. The mooring device comprises at least three mooring assemblies, each mooring assembly comprises a horizontal catenary, a buoy, at least two mooring cables and pile foundations, the number of the pile foundations is the same as that of the mooring cables, and one mooring cable corresponds to one pile foundation; the first end of the horizontal catenary is connected with the buoy, the first end of each mooring rope is connected with the buoy, and the second end of each mooring rope is connected with the corresponding pile foundation. When the mooring assemblies are used for mooring the floating body in the middle-shallow water area, the mooring assemblies are evenly distributed on the periphery of the floating body, the second end of the horizontal catenary is connected with the floating body, the buoy floats on the sea surface, and the pile foundation is vertically fixed to the seabed mud surface and extends downwards. The large horizontal restoring force can be provided, meanwhile, the mooring radius can be reduced, construction is easy, installation is convenient, the foundation manufacturing cost is low, and a more reliable and more economical mooring solution is provided for mooring of the floating system in the middle-shallow water area with the water depth of 30-100 m.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a mooring device and an installation method for floating bodies in medium and shallow waters. Background technique [0002] As the global low-carbon policy stimulates and promotes the development of new energy, wind energy, as a renewable clean energy, has attracted worldwide attention due to its sustainability and huge reserves. The ocean has abundant wind energy resources and more potential available space, and ocean wind energy is more stable than land wind energy, with higher wind speed, and its power generation has less impact on the environment. Therefore, ocean wind power must have a broad development space in the future. [0003] my country has a long coastline, especially the offshore sea area has very rich offshore wind energy resources. Due to the shallow water depth in this part of the area, most of the fixed-based wind turbines are currently used. However, with t...

AI Technical Summary

Problems solved by technology

Horizontal catenary mooring in shallow water requires the use of very long anchor chains to provide sufficient resilience, not only the mooring radius is too large but also the material and construction costs are high

Due to the limitation of water depth, tension mooring requires very high rigidity of mooring lines and very strict requirements on the installation environment, so it is only suitable for floating structures with small displacement

Turret mooring is a single-point mooring system, which is not conducive to the dynamic cable arrangement of floating wind turbines, and its construction cost is too high to be economical

It is difficult for the existing mooring technology in medium and shallow water to realize the unification of mooring function and construction cost

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