Negative pressure bucket anchoring device provided with barbs, installation method and floating type offshore wind plant

Abstract

The invention provides a negative pressure bucket anchoring device provided with barbs, an installation method and a floating type offshore wind plant. The negative pressure bucket anchoring device provided with the barbs comprises a negative pressure bucket body, the lower end of the negative pressure bucket body is open, the upper end of the negative pressure bucket body is provided with a close cover, the negative pressure bucket anchoring device further comprises a one-way draining valve, the one-way draining valve is installed on the close cover, a water inlet of the one-way draining valve is communicated with the negative pressure bucket body, the barbs are arranged on the outer wall and / or the inner wall of the negative pressure bucket body, and multiple anchoring connection assemblies connected with an anchor chain are arranged on the close cover. According to the negative pressure bucket anchoring device provided with the barbs, the installation method and the floating type offshore wind plant, frictional resistance between the negative pressure bucket body and silt is increased through the barbs, anchoring capability is improved, meanwhile, the pressure difference is formed between the interior and the exterior of the negative pressure bucket body through the one-way draining valve, the negative pressure bucket anchoring device is further inserted into a silt layer of the seabed through pressure of seawater, basic cost of a deep sea floating type wind turbine is effectively lowered, the installation cycle of the deep sea floating type wind turbine is effectively shorted, and construction difficulty of the floating type offshore wind turbine and influence of the weather factors on offshore operation are lowered.

Description

technical field [0001] The invention relates to the technical field of anchoring of floating offshore wind turbines, in particular to a negative pressure bucket anchoring device with barbs, an installation method and a floating offshore wind farm. Background technique [0002] At present, most of the global offshore wind power is located in the sea area less than 50m. The main foundation forms include single pile foundation, four-pile jacket foundation, multi-pile foundation and gravity foundation, and the cost is still within the controllable range. In the next 20 years, the development of deep-sea and offshore wind power will become a trend, and the economics of the above-mentioned foundation forms will no longer have advantages. Floating wind turbines will replace fixed foundations and become the mainstream of deep sea. If the anchoring system of floating foundations still uses traditional offshore oil pile foundations , the cost cannot be controlled. [0003] Most of th...

AI Technical Summary

Problems solved by technology

In the next 20 years, the development of deep-sea and offshore wind power will become a trend, and the economics of the above-mentioned foundation forms will no longer have advantages. Floating wind turbines will replace fixed foundations and become the mainstream of deep sea. If the anchoring system of floating foundations still uses traditional offshore oil pile foundations , the cost cannot be controlled

[0003] Most of the anchors of floating offshore wind turbines around the world use pile foundations. Because the pile foundation construction requires large-scale construction ships to drive piles, in the face of harsh sea conditions, the construction period of piling operations is long and the cost is high, and the pile foundations are deep into the mud. , making the cost of the pile foundation very expensive; how to effectively reduce the cost of the floating offshore wind turbine anchorage system has become an important research topic

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