Megawatt wind turbine blade with rib

Abstract

The invention discloses a megawatt wind turbine blade with ribs. The blade consists of a front edge, a rear edge, a main beam, a web plate and ribs, wherein the front edge and the rear edge form a shell of the blade mainly meeting the requirements of aerodynamic performance of the wind turbine blade, and the main beam, the web plate and the ribs form the internal frame of the blade mainly meetingthe requirements of structural performance of the wind turbine blade. On the basis of guaranteeing the maximum output power, the megawatt wind turbine blade in the novel bearing structure with the ribs, the web plate and the main beam is capable of converting the transfer mode of loads inside the internal frame of the blade, optimizing the strained condition of the structure, further adjusting the thickness of laying of the main beam and the web plate, reducing self-weight, and finally realizing high strength and light weight of the blade, which improves the efficiency of a wind-driven generator.

Description

technical field [0001] The invention relates to a novel structure of a megawatt-level wind blade with cabin ribs, which is mainly used in the megawatt-level wind blade and belongs to the field of structure and material engineering. Background technique [0002] In recent years, the world's wind power generation has grown at an average rate of more than 30%. The rapid development of the global wind power industry has driven the rapid development of wind turbines. The blades are one of the key components of wind turbines, and their performance directly affects the performance of wind turbines. The utilization efficiency of wind energy and the load on the unit largely determine the overall performance of the unit and the economics of wind power development and utilization. At the same time, the blade is also the core component of the wind turbine, and its cost is about 20% of the total cost of the wind turbine. Therefore, major wind turbine manufacturers in the world attach gr...

AI Technical Summary

Problems solved by technology

[0006] 1. When the blade is loaded, it is most likely to have excessive stress and strain in the vicinity of the maximum chord length of the blade, which will lead to cracking and damage of the blade;

[0007] 2. In addition to damage due to excessive stress near the position of the maximum chord length of the blade, there is also a form of damage that causes damage to the overall structure of the blade due to local buckling at the trailing edge of the blade;

[0008] 3. The self-weight of a single blade is too large, resulting in a large load on the entire wind turbine, which reduces the efficiency of the fan and increases the production cost, which ultimately reduces the cost performance of the fan

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