Device suitable for restraining vortex-induced vibration of wind turbine tower

Abstract

The invention discloses a device suitable for restraining vortex-induced vibration of wind turbine tower. The device comprises a square carrying frame arranged in a square shell, a mass block is arranged in the square carrying frame, a pair of outer side walls of the square carrying frame and a pair of inner side walls of the square shell are connected through two conical springs, the two ends ofthe conical spring are fixedly connected to the outer side wall of the square carrying frame and the inner side wall of the square shell correspondingly, a damper connected with the outer side wall ofthe square carrying frame and the inner side wall of the square shell is further arranged in the conical spring, the other pair of outer side walls of the square carrying frame is connected with theother pair of inner side walls of the square shell through linear springs, and the two ends of each linear spring are hinged to the other pair of outer side walls of the square carrying frame and theother pair of inner side walls of the square shell through pin shafts correspondingly. reliable guarantee is provided for 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...

AI Technical Summary

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

Images