Flexible vibration self-adaptive wind turbine blade

Through the design of flexible vibration adaptive wind turbine blades, the inflatable expansion body and chamber structure are used to adaptively adjust the flap angle, which solves the problems of large weight and high manufacturing cost of existing wind turbine blades, and achieves efficient and stable wind power utilization and long-life blades.

CN119664569AActive Publication Date: 2025-03-21XIHUA UNIV
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Patent Information

Application Number
CN202411890838.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-21
Estimated Expiration
2044-12-20

AI Technical Summary

Technical Problem

The existing wind turbine blades have problems such as heavy weight, high manufacturing cost and cumbersome transportation in terms of flap angle control, which affects the overall performance and economy of the wind turbine.

Method used

The flexible vibration adaptive wind turbine blade is adopted, and the flaps are flexiblely connected through an inflatable expansion body. The inflatable chambers on both sides of the chord line change the compression degree as the flaps swing, adaptively adjust the reaction force of the expansion body on the flaps, and stabilize the flap angle.

Benefits of technology

It achieves the effect of simple and compact structure, light weight, high strength, foldable and fast installation, improves the operation efficiency of the blades at low wind speeds, reduces extreme loads and fatigue loads, extends the service life of the wind turbine, and improves the stability and adaptability of the wind turbine.

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Abstract

The invention relates to a flexible vibration self-adaption wind turbine blade which comprises a blade body, the rear edge of the blade body is flexibly connected with a flap through an inflatable expansion body, and inflatable cavities are formed in the positions, on the two sides of a chord line, of the expansion body. The chambers located on the two sides of the chord line swing along with the flap to change the compression degree so as to adjust the counter-acting force of the expansion body on the flap in a self-adaptive mode, and the flap angle between the blade body and the flap tends to be stable. The device is simple and compact in structure, light in self weight, high in strength, foldable and rapid to mount; when the blade works and the wind power is large, the flexible structure is affected by the wind power and can be bent upwards, and the stability of the whole blade is guaranteed. When the wind power is reduced, the flexible structure is affected by the pressure difference of the two air chambers and can be bent downwards, the operation efficiency of the blade at the low wind speed can be improved, and the effects of increasing efficiency and expanding stability are achieved.
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