Blade tip extension connecting structure and assembling method thereof

Abstract

The invention provides a blade tip extension connecting structure and an assembling method thereof. The blade tip extension connecting structure is composed by connecting a blade root section and a blade tip section in a cementing mode; the blade root section is of a residual structure after the blade tip part is cut by an original blade, and the blade tip section is of a newly manufactured structure; the blade root section is composed of a blade root complete section, a blade root reinforcing section and a blade root binding section; the blade tip section is composed of a blade tip bonding section and a blade tip complete section in the unfolding direction; and the blade root section is provided with a connecting notch which extends inwards from the outermost side section to the inner side in a pressure surface and a suction surface, the blade tip section is provided with a connecting web plates, the blade root section is nested in the blade tip section, the connecting notches of theblade root section is inserted into the connecting web plates of the blade tip sections to be connected in an inserted mode, so that the blade root section is connected to the blade tip section. The blade tip extension connecting structure and the assembling method thereof have the beneficial effects that continuous distribution of the blade shearing web plates is guaranteed, and the reliability of the blade adhesive structure is improved.

Description

technical field [0001] The present disclosure relates to the field of wind generator blade design, in particular to a blade tip extension connection structure and an assembly method thereof. Background technique [0002] As the global climate changes, the wind resource characteristics of wind farms will also change to a certain extent, causing the output power of wind turbines matched under the original wind resource characteristics to decrease. Wind turbines mainly rely on wind turbine blades to capture wind energy, and the length of wind turbine blades directly affects the ability of wind turbines to capture wind energy and the output power of wind turbines. Increasing the length of wind turbine blades at low wind speeds can effectively increase the power generation of wind turbines. [0003] In addition, the cost of wind power blades accounts for about 15%-20% of the cost of the whole unit. If the overall replacement of the existing wind power blades is bound to increase...

AI Technical Summary

Problems solved by technology

[0004] Existing blade tip extension technologies mostly simply bond a composite material shell on the basis of the existing blade structure to extend the length of the blade. Insufficient fatigue strength, discontinuity of the shear web along the span direction leads to adverse effects such as poor structural strength and stability

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