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A wind turbine tower nonlinear vibration damping device

A technology for wind turbines and vibration reduction devices, which is applied in the installation/support of wind turbine configuration, wind energy power generation, non-rotational vibration suppression, etc., can solve the problems of low vibration reduction efficiency, low economic cost, poor vibration reduction effect, etc. The effect of good vibration reduction, low economic cost and easy maintenance

Active Publication Date: 2021-08-17
ZHEJIANG WINDEY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of poor vibration damping effect and low vibration damping efficiency of the vibration damping device used in the wind turbine tower in the prior art, the present invention provides a wind turbine tower nonlinear vibration damping device with dynamic vibration absorption frequency bandwidth , good vibration reduction effect, simple and easy maintenance, low economic cost and other advantages

Method used

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  • A wind turbine tower nonlinear vibration damping device
  • A wind turbine tower nonlinear vibration damping device
  • A wind turbine tower nonlinear vibration damping device

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a nonlinear damping device for a wind turbine tower 5 includes a base 1, a linear damping component 2, a nonlinear energy well component 3 and a yaw 4; the wind turbine tower 5 is provided with an interlayer 5.1 . Such as image 3 As shown, the yaw device 4 includes a yaw bearing base 4.1, an internal gear 4.2, a drive gear 4.3 and a drive motor 4.4; the yaw bearing base 4.1 is fixed to the compartment 5.1, and the internal gear 4.2 is embedded in the yaw bearing base 4.1 , and is rotationally connected to the wind turbine tower 5 through the yaw bearing, the internal gear 4.2 is fixed to the base 1; the drive motor 4.4 is fixed to the wind turbine tower compartment 5.1, and the drive gear 4.3 is connected to the output shaft of the drive motor 4.4. The drive gear 4.3 meshes with the internal gear 4.2.

[0029] Such as figure 2 As shown, the base 1 is provided with two first guide rails 1.1 and one second guide rail 1.2; the first guide r...

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Abstract

The invention discloses a wind turbine tower nonlinear vibration damping device, comprising: a base, which is used to support other parts of the vibration damping device; a linear vibration damping component, which includes a connecting frame, a first slider and a telescopic spring, The first slider is slidably connected to the base, the first slider is fixed to the connecting frame, one end of the telescopic spring is connected to the base, and the other end of the telescopic spring is connected to the connecting frame; the non-linear energy sink component includes an elastic string, a second slider and the damper, the second slider is slidably connected to the base, one end of the damper is fixed to the connecting frame, the other end of the damper is fixed to the second slider, and the first slider and the second slider are connected through elastic strings. The invention provides a wind turbine tower nonlinear vibration damping device, which has the advantages of dynamic vibration absorption frequency bandwidth, good vibration damping effect, simple and easy maintenance, and low economic cost.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a nonlinear damping device for a wind turbine tower. Background technique [0002] As the global energy crisis and climate warming intensify, clean energy such as wind energy and solar energy have received more and more attention. Wind turbines are the main equipment for converting wind energy into electrical energy. In order to use wind energy more efficiently, the power of wind turbines is increasing, and the towers of wind turbines are also built higher and higher. At the same time, in the context of controlling wind power costs, wind turbines have used flexible structure towers in batches. Therefore, for the strong impact load caused by sudden strong winds, earthquakes and other natural disasters, as well as the resonance caused by the specific wind speed and the uneven rotation of the impeller, the tower of the wind turbine is easily damaged or even collapsed, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/02F16F15/067F16F15/28F03D13/20
CPCF16F15/022F16F15/067F16F15/28F03D13/20Y02E10/72Y02E10/728
Inventor 王潇余清清许国东
Owner ZHEJIANG WINDEY