Design method of wind power blade in view of pneumatic and structural balance

Abstract

The invention discloses a design method of a wind power blade in view of pneumatic and structural balance, belonging to the technical field of wind power blade design. The design method comprises the steps of: 1) dividing the designed blade into an inner ring and an outer ring according to the wind power unit blade and unit parameters; 2) choosing the pneumatic wing section of the inner ring blade; 3) choosing the pneumatic wing section of the outer ring blade; 4) calculating and optimizing the pneumatic appearance of the blade; and 5) designing the structure of the main beam of the wind power unit blade. The design method has the following beneficial effects: 1) the contradiction between the pneumatic design and the structural design is solved by considering the demand of structural strength in the pneumatic design process by means of dividing the blade into an inner ring and an outer ring and choosing a relatively thicker wing section for the inner ring; and 2) the structural strength of the blade is effectively improved by means of designing a shear web of the main beam in the inner ring of the blade into a waveform shape in the structural design of the main beam of the blade.

Description

technical field [0001] The invention belongs to the technical field of wind power blade design, and in particular relates to a wind power blade design method considering aerodynamic and structural balance, which is used for the design of large-scale wind power blade dimensional composite material structures. Background technique [0002] As a renewable green energy, wind energy has created the fastest growth rate in the global new energy industry with its huge commercial potential and environmental protection benefits, and has formed a huge wind power industry. Wind turbine blades are the core components of wind turbines, and the research on their design methods needs to be further studied. The blade design can be divided into two stages, namely, the aerodynamic design stage and the structural design stage. In the previous stage, the goal of the maximum annual power generation is achieved by selecting the best geometric shape of the blade. The structural design stage include...

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Problems solved by technology

[0003] In the current blade design and optimization process, the aerodynamic and structural design processes are carried out separately, and designing the aerodynamic shape and structure of the blade at the same time will lead to a large amount of calculation, and there is no mature method

The conventional method is to design the blade aerodynamic shape first, and then the blade structure design, which will lead to a good aerodynamic shape accompanied by a structure that is difficult to achieve

There are also discussions on the structure-first design method, but the structure-first method is also difficult to solve the contradiction of the separation of the design process

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