Multilayer tuned liquid damper

Abstract

The invention provides a multilayer tuned liquid damper which is composed of damper chamber units, liquid, blades and connecting nodes. The damper chamber unit has an annular structure. The liquid is injected into the chamber. A plurality of blades are fixed in the chamber. The upper end of each blade is hinged with top of the damper chamber unit, and the lower end is connected with the damper chamber unit through the connecting node. A plurality of damper chamber units are stacked together in a vertical direction, thereby forming an integral member, wherein the integral member is placed on top of an offshore wind turbine spar-type floating foundation. Under the function of factors such as sea surface wave, a pitching angle is reduced through shake of the liquid in each damper chamber unit, thereby realizing a purpose of energy dissipation.

Description

technical field [0001] The invention proposes a multi-layer frequency modulation liquid damper, which is composed of a damper cavity unit, liquid, vanes and connecting nodes. Under the action of sea surface waves, etc., the pitch angle is reduced by the sloshing of the liquid in each damper cavity to achieve the purpose of energy consumption and vibration reduction. It belongs to the vibration control of civil structures (including high-rise buildings, towering structures and bridge structures, etc.) field. Background technique [0002] Interest in renewable energy continues to grow, leading to a growing wind turbine market. Worldwide installed wind power capacity reached approximately 318GW in 2013. However, environmental concerns such as noise and visual impact on terrain have prevented the widespread spread of inland wind turbines. As an alternative, offshore wind farms are gaining attention. As the next generation of offshore wind turbines, a floating wind turbine co...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the ordinary TLD vibration damping effect i...

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