Vibration attenuating device for large part of large offshore wind driven generator tower

Abstract

The invention relates to a vibration attenuating device for a large part of a large offshore wind driven generator tower and belongs to the technical field of vibration control of a wind driven generator. The vibration attenuating device mounted on the upper part of a fan tower comprises an upper connecting steel plate, a bolt a, a spherical hinge, a viscous damper, a flexible vibration isolatingsupport, a bolt b, an upper tower of the wind driven generator, a manhole, a lower connecting steel plate and a lower tower of the wind driven generator. When the fan tower vibrates, the flexible vibration isolating support and the viscous damper play a vibration isolating role, and meanwhile, the vibration attenuating device can swing to a small extent at 360 degrees by taking the axis of the tower as a center to play energy-consuming and vibration-absorbing roles, so that the vibration attenuating device plays roles of protecting upper head equipment and reducing fatigue damage of the structure.

Description

technical field [0001] The invention belongs to the technical field of vibration control of wind power generators, and in particular relates to a vibration damping device on the upper part of a large offshore wind power generator tower. Background technique [0002] The advantages of offshore wind power generation are becoming more and more prominent. Many sea areas rich in wind energy resources are located in cold areas. For wind farms in cold areas, wind, waves, currents, and sea ice will all cause vibrations in the structure of offshore wind turbines, especially sea ice. When interacting with the structure, when the ice force period is close to the natural vibration period of the structure, it will cause structural resonance response, resulting in dynamic amplification phenomenon, accelerating structural fatigue failure and causing equipment failure problems. How to better control the vibration of the fan structure, reduce the fatigue failure of the tower structure and co...

AI Technical Summary

Problems solved by technology

[0002] The advantages of offshore wind power generation are becoming more and more prominent. Many sea areas rich in wind energy resources are located in cold areas. For wind farms in cold areas, wind, waves, currents, and sea ice will all cause vibrations in the structure of offshore wind turbines, especially sea ice. When interacting with the structure, when the ice force period is close to the natural vibration period of the structure, it will cause structural resonance response, resulting in dynamic amplification phenomenon, accelerating structural fatigue failure and causing equipment failure problems

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