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A device and method for adding resistance to the blade structure of a horizontal axis wind turbine

A wind turbine and blade structure technology, which is applied to wind turbines, wind turbines that are consistent with the wind direction, and wind turbine control, etc. cost, the effect of improving buckling stability

Active Publication Date: 2022-06-21
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to transmit the blade vibration excitation and damping dissipation feedback over a long distance, the pulling force needs to ensure that the cable is always tensioned under the condition of large deformation of the blade, and the safety of the relevant fixed connection position needs to be checked separately, which may affect the safe operation of the blade itself have an impact

Method used

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  • A device and method for adding resistance to the blade structure of a horizontal axis wind turbine
  • A device and method for adding resistance to the blade structure of a horizontal axis wind turbine

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Embodiment Construction

[0039] The present invention will be described in further detail below with reference to the accompanying drawings.

[0040] like figure 1 , figure 2 As shown in the figure, the present invention provides a blade structure resistance adding device for a horizontal-axis wind turbine. There are many The main body of the group blade structure resistance device is used to increase the damping of the blade vibration structure in the direction of the blade swing and the vibration direction.

[0041] The blade structure resistance device body includes a restoring force mass power unit and an elastic connection structure 5, wherein the restoring force mass power unit is provided with multiple groups, which are arranged in the same cavity in the spanwise direction of the blade, and two adjacent restoring force units are arranged in the spanwise direction of the blade. The force-mass power units are connected to each other by an elastic connection structure 5 .

[0042] The restorin...

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Abstract

The present invention provides a device and method for adding resistance to the blade structure of a horizontal axis wind power generating set, which is characterized in that a main load-bearing structure area on the inner surface of the blade shell composed of the windward shell of the blade and the shell of the leeward side of the blade is provided Multiple sets of blade structure damping device bodies are used to increase the damping of the blade vibration structure in the blade swing direction and the shimmy direction; the method of actively absorbing the vibration kinetic energy of the blade structure and forming energy dissipation is used to increase the damping of the blade vibration structure; this structure can Time and cost are saved; at the same time, the safety of the blade itself is not affected, and at the same time, it can help to improve the buckling stability of the main load-bearing structure of the blade.

Description

technical field [0001] The invention relates to increasing damping of blades of wind turbines, in particular to a device and method for adding resistance to blade structures of horizontal axis wind turbines. Background technique [0002] With the continuous advancement of the development trend of large-scale and light-weight single-unit capacity of horizontal-axis wind turbines, the design and manufacturing technology of the units has progressed significantly. exhibit nonlinear characteristics. Blades are an important tool for capturing wind energy. Generally speaking, the flexibility of blades is increasing, and the deflection and vibration of blades are increasing. Fatigue failure forms play a more critical role. Blade-tower interference problems, flutter failure problems, etc. more likely to happen. [0003] By adjusting the control strategy of the unit and increasing the elevation angle of the wind turbine, the load can be effectively reduced, the blade-tower clearance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D1/06F03D7/04
CPCF03D1/0675F03D7/0296Y02E10/72
Inventor 郑磊蔡安民张波卢坤鹏
Owner HUANENG CLEAN ENERGY RES INST
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