Non-linear vibration damping device for wind turbine tower
A technology for wind turbines and vibration damping devices, which is applied in the installation/support of wind turbine configuration, wind energy power generation, non-rotational vibration suppression, etc. Low economic cost, good vibration damping effect, and easy maintenance
Active Publication Date: 2020-07-10
ZHEJIANG WINDEY
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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
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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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The invention discloses a non-linear vibration damping device for a wind turbine tower. The non-linear vibration damping device comprises a base, a linear vibration damping assembly and a non-linear energy trap assembly, wherein the base is used for supporting other parts of the vibration damping device; the linear vibration damping assembly comprises a connecting frame, first sliding blocks and atelescopic spring; the first sliding block is connected with the base in a sliding manner, and are fixed to the connecting frame; one end of the telescopic spring is connected with the base, and theother end of the telescopic spring is connected with the connecting frame; the nonlinear energy trap assembly comprises an elastic string, a second sliding block and a damper; the second sliding blockis connected with the base in a sliding manner; the connecting frame is fixed to one end of the damper, and the second sliding block is fixed to the other end of the damper; and the first sliding blocks are connected with the second sliding block through the elastic string. The non-linear vibration damping device has the advantages of dynamic vibration absorption frequency bandwidth, good vibration damping effect, simple and easy maintenance, low economic cost and the like.
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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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