Floating wind turbine unit and offshore floating wind power plant

Abstract

A floating wind turbine unit is formed by a large-scale vertical-shaft wind turbine unit and a floating base which are closely fitted integrally. The upper box wall and lower box wall of the floating base are fixed with a tower of the large-scale vertical-shaft wind turbine unit. Rotating force output of the large-scale vertical-shaft wind turbine unit is transmitted through a driven gear unit and upper and lower driven shafts in a matching driven manner to a power generator or multiple generator adjusting system arranged in the floating base, so that stable wind power generation which is achieved by double valued adjustment and which is capable of matching with wind wheel force output capacity adjustment. An offshore floating wind power plant is formed by an integrated entire structure composed of more than two floating wind turbines in combination in multiple various forms. According to the floating wind turbine and the offshore floating wind power plant, key technical gaps of wind power developing complete machines of near offshore and far offshore can be filled, and gaps of large equipment of offshore wind power developing field can be filled.

Description

technical field [0001] The invention relates to a floating wind turbine and an offshore floating wind power station, which can fill in the gap in the key technology of offshore and remote sea wind energy development complete machines. Background technique [0002] Offshore wind power is strong and stable, especially in areas far away from the coast; offshore wind power can be built in a wide range of areas in the far sea, and there is extremely huge space and potential for wind power development. In addition, the coastal areas of most countries in the world are economically developed areas, and the demand for electricity is strong all year round. [0003] However, it is not easy to develop offshore wind power in the form of the existing large-scale horizontal-axis wind turbines, and it is even more impossible to develop wind energy in far-sea and deep-sea areas with it. Floating offshore wind turbines will be the most ideal and convenient , The cheapest option is the develo...

AI Technical Summary

Problems solved by technology

Because the greater the power of the fan, the blades will be greatly extended, which will force the tower to be heightened, resulting in an increase in the wind thrust on the top of the fan in the horizontal direction, thus forming a lever-type prying force. It will make the floating foundation easy to damage, and it is more likely to cause the overall nature of the inclined collapse

[0005] In addition, the generator equipment of the current wind turbine is all installed on the top, forming a top-heavy overall weight distribution pattern. Under the condition of floating foundation, the top weight of the wind turbine slightly deviates from the vertical center, which will form a lever-type super-amplified tilting collapse force, resulting in its Difficulty forming a stable setup on a single floating basis

[0006] It is the only way to solve the above problems by using multi-machine fixed connections to form a large-area rigid floating foundation. However, the yaw rotation of the current large-scale wind turbine blades takes up a lot of space, which will result in a long distance between the two wind turbines. Under the huge torque of the above-mentioned lever-type prying foundation and the force of tilting and collapsing, it will make it difficult for the connection structure and connection materials between the two floating bodies to achieve a stable and safe design and safety under huge wind and waves. application

If the connection structure between the two units is super-reinforced, it will lead to a huge overall weight and a huge overall cost of the floating wind turbine when the fan output is not strong, which will seriously interfere with the original intention of the floating design. diverge, making it difficult even to implement a floating design

[0007] In addition, the existing fan blades do not have the regulation methods and capabilities to avoid typhoons and hurricanes, which will also lead to many practical difficulties and great dangers in the process of offshore applications.

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