Offshore wind power foundation, installation method thereof and wind generating set

Abstract

The invention provides an offshore wind power foundation, an installation method thereof and a wind generating set. The offshore wind power foundation comprises the following parts: a floating box, wherein a cavity is formed in the floating box, and a through hole communicating with the cavity is formed in the upper surface of the floating box; a suction cylinder, which is arranged on the lower surface of the floating box; and a jacket, which is arranged on the upper surface of the floating box. According to the offshore wind power foundation, the self-floating capacity can be achieved, self-installation can be achieved, the installation time can be saved, and the wave load can be reduced.

Description

technical field [0001] The invention relates to the technical field of offshore wind power generation, and more specifically relates to an offshore wind power foundation, an installation method thereof and a wind power generating set. Background technique [0002] Offshore wind turbines usually consist of three parts: tower head (wind wheel and nacelle), tower and foundation, among which the foundation of offshore wind farm is crucial to the safety of the whole machine. [0003] Commonly used foundation types for offshore wind turbines include monopile foundation, jacket foundation, gravity foundation and suction cylinder foundation. Among them, the diameter of the main legs and struts of the jacket foundation is small, the wave force is small and the rigidity is large, but its installation and construction require piling and underwater grouting, piling hammers, underwater grouting equipment, divers or ROVs, and related installation ship resources etc., resulting in higher ...

AI Technical Summary

Problems solved by technology

Among them, the diameter of the main legs and struts of the jacket foundation is small, the wave force is small and the rigidity is high, but its installation and construction require piling and underwater grouting, piling hammers, underwater grouting equipment, divers or ROVs, and related installation ship resources etc., resulting in higher construction period and construction and installation costs. If the bedrock with shallow buried depth is encountered, rock-socketed pile construction will be required, which will greatly increase the construction period and the construction cost is also very expensive. In sea areas with short construction windows , such as Fujian and Guangdong, the construction time is also very tight

[0004]Gravity foundation does not need piling, and uses prefabricated concrete, the cost is relatively low, but it needs relatively flat rock formation with good lithology or dense sandy soil layer as the foundation, and The burial depth of the supporting layer is relatively shallow. For example, in Guangdong and Fujian sea areas where the burial depth of the supporting layer is shallow and the foundation is relatively flat. If the burial depth of the supporting layer is deep or uneven, dredging and foundation leveling are required. Long and high construction cost

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