A floating wind turbine foundation mooring device and installation method

Abstract

The invention discloses a floating wind turbine foundation mooring device and an installation method. The device includes: several mooring cables, the first end of each mooring cable is connected to the floating wind turbine foundation, and the second end of the mooring cable Connected to the mooring point; each mooring line includes a first mooring line section and a second mooring line section, the first end of the first mooring line section is connected to the floating wind turbine foundation, and the first end of the mooring line section The two ends are connected to the first end of the second mooring cable section, and the second end of the second mooring cable section is connected to the mooring point; the second mooring cable section includes a first sub-mooring section A cable section, a second sub-mooring cable section, and several gravity block chains, and several gravity block chains are arranged at intervals between the first sub-mooring cable section and the second sub-mooring cable section. The invention has the advantages of reducing the mooring radius and mooring rope consumption, and reducing the cost.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a basic mooring device for a floating wind turbine and an installation method. Background technique [0002] There are abundant wind resources at sea, and the offshore wind speed is relatively stable, which is less affected by terrain and has little impact on the environment. Therefore, offshore wind power generation is very important. With the growing scale of offshore wind farms, it has become an inevitable development trend for offshore wind power to go to the deep sea. [0003] As the water depth increases, the cost of fixed fans increases significantly, and floating fans become an option at this time. The floating wind turbine can be installed on the shore, and then transported to the stand for mooring as a whole, without the use of large offshore hoisting equipment, which can significantly reduce the cost of installation and transportation. However, most of the waters ...

AI Technical Summary

Problems solved by technology

This will greatly increase the cost of the mooring system, which is not conducive to the commercialization of floating wind turbines

[0005] Eccentric buoyancy tube technology can effectively provide restoring force, but because the wind load can generate a very large horizontal thrust, to provide sufficient restoring force through the eccentric buoyancy of the buoyancy tube, a large-volume buoyancy tube is required. Large buoyancy requires very large anchors to hold it, making anchors cost prohibitive

[0006] The method of adding buoyancy components in the middle and lower part of the mooring rope can increase the stiffness of the mooring rope, but it cannot increase the horizontal tension generated by the mooring rope. Therefore, the mooring rope is still easy to be straightened, which increases the sudden tension of the mooring rope and the pull-up force of the anchor point

[0007] In the prior art, by adding the buoyancy block structure, it is impossible to avoid the situation that the mooring rope is straightened

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