Floating type wind turbine foundation mooring device and mounting method

Abstract

The invention discloses a floating type wind turbine foundation mooring device and a mounting method. The device comprises a plurality of mooring ropes, the first end of each mooring rope is connectedwith a floating type wind turbine foundation, and the second end of each mooring rope is connected with an anchoring point; each mooring rope comprises a first mooring rope section and a second mooring rope section, the first end of the first mooring rope section is connected with the floating type wind turbine foundation, the second end of the first mooring rope section is connected with the first end of the second mooring rope section, and the second end of the second mooring rope section is connected with the anchoring point; and the second mooring rope section comprises a first sub-mooring rope section, a second sub-mooring rope section and a plurality of gravity block chains, and the gravity block chains are arranged between the first sub-mooring rope section and the second sub-mooring rope section at intervals. The device has the advantages that the mooring radius and the using amount of mooring ropes are reduced, and the cost is reduced.

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 a floating wind turbine foundation. Background technique [0002] There are abundant wind resources at sea, and the wind speed at sea 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 development of offshore wind farms becoming larger and larger, it has become an inevitable development trend for offshore wind power to go deep into the sea. [0003] As the water depth increases, the cost of fixed wind turbines increases significantly, and floating wind turbines become an option at this time. Floating wind turbines can be installed on the shore, and then transported to the aircraft position as a whole to complete mooring. There is no need to use large offshore hoisting equipment, which can significantly reduce inst...

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

Images