A device suitable for suppressing vortex-induced vibration of wind turbine tower

Abstract

The invention discloses a device suitable for suppressing vortex-induced vibration of a wind turbine tower, which comprises a square loading frame arranged in a square casing, a mass block is arranged in the square loading frame, a pair of outer side walls of the square loading frame and a square casing A pair of inner sidewalls are connected by two conical springs, and the two ends of the conical springs are respectively fixedly connected to the outer sidewall of the square carrier frame and the inner sidewall of the square housing, and a square carrier frame is also arranged inside the conical spring The damper of the outer wall and the inner wall of the square shell; the other pair of outer walls of the square frame is connected with the other pair of inner walls of the square shell through a linear spring, and the two ends of the linear spring are respectively hinged to the side of the square frame through pin shafts. On the other pair of outer sidewalls and the other pair of inner sidewalls of the square shell, the invention can effectively suppress and weaken the vortex-induced vibration of the wind turbine tower, providing a reliable guarantee for the large-scale development of the wind turbine.

Description

technical field [0001] The invention relates to a wind turbine tower, in particular to a vibration suppression device. Background technique [0002] With the continuous development of wind power technology, large wind turbines are becoming more and more common. However, as the wind continues to increase in size, the towering tower will absorb the energy carried in the wind, resulting in vortex-induced vibration, which will cause the tower to fail and cause major economic losses. At present, the vortex-induced vibration of the wind turbine tower is mainly weakened by installing some turbulence devices to destroy the vortex structure or changing the vortex shedding mode. However, after the turbulence device is installed, the resistance to the tower will be greatly increased, and the turbulence device will also cause other forms of vibration. Although there are many disadvantages in adding turbulence devices, changing the shape of the tower section can effectively suppress th...

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Problems solved by technology

[0004] Due to the periodic rotation of the blades of the wind turbine, the mass distribution of the wind turbine is also constantly changing, so the natural frequency of the wind turbine will also change. In addition, the first-order and second-order vortex-induced vibrations of the wind turbine tower corresponding to It is also difficult to determine the frequency

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