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Blade structure resistance increasing device and method for horizontal-axis wind generating set

A technology for wind turbines and blade structures, applied in the direction of wind engines, wind engines consistent with the wind direction, wind engine control, etc., can solve problems such as the influence of blades on safe operation, increase the damping of blade vibration structures, save time and Cost, effect of improving buckling stability

Active Publication Date: 2021-07-09
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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  • Blade structure resistance increasing device and method for horizontal-axis wind generating set
  • Blade structure resistance increasing device and method for horizontal-axis wind generating set

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Embodiment Construction

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

[0040] Such as figure 1 , figure 2 As shown, the present invention provides a blade structure resistance device for a horizontal axis wind power generating set. There are multiple The main body of the blade structure damping device is used to increase the damping of the blade vibration structure in the blade flapping direction and the shimmy direction.

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

[0042] The restoring force mass block power unit includes a supporting structure 3, a mass block 4,...

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Abstract

The invention provides a blade structure resistance increasing device and method for a horizontal-axis wind generating set. The device is characterized in that a plurality of groups of blade structure resistance increasing device bodies are arranged between main bearing structure areas on the inner surface of a blade shell consisting of a blade windward side shell and a blade leeside shell, and are used for increasing blade vibration structure damping in the blade waving direction and the swing vibration direction. The blade vibration structure damping is increased by adopting the method of actively absorbing the vibration kinetic energy of a blade structure and forming energy dissipation. The time and cost can be saved by means of the structure; and meanwhile, the safety of a blade is not influenced, and the buckling stability of a main bearing structure of the blade can be improved.

Description

technical field [0001] The invention relates to increased damping of blades of a wind power generator set, in particular to a device and method for adding damping to a blade structure of a horizontal axis wind power generator set. Background technique [0002] With the continuous advancement of the development trend of large-scale and lightweight single-unit capacity of horizontal-axis wind turbines, the design and manufacturing technology of the unit has made significant progress. exhibit nonlinear properties. As an important tool for capturing wind energy, blades are generally more flexible, and the deflection and vibration of the blades are increasing. 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 can be increased, and the stall section can be avoided, but most of the external solutions can only alleviate a certain type o...

Claims

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Application Information

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Patent Type & Authority Applications(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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