An adjustable jacketed tuned damper for offshore wind turbines

Abstract

The invention relates to a tunable damper for a jacket-type offshore wind power generator, comprising an outer damping cavity unit (1) slidably arranged on the ground and an inner damper slidably arranged in the outer damping cavity unit (1). The cavity unit (5), the outer wall of the outer damping cavity unit (1) is connected with the wind turbine through the energy dissipation spring (4), and the middle of the outer damping cavity unit (1) is provided with a downwardly concave cavity (10) ), the inner damping cavity unit (5) is slidably arranged on the bottom plate of the cavity (10), and the side wall of the inner damping cavity unit (5) is connected with the inner wall of the cavity (10) through the energy dissipation spring (4) , the interior of the outer damping cavity unit (1) and the inner damping cavity unit (5) are sealed, and the liquid (2) is installed inside the outer damping cavity unit (1) and the inner damping cavity unit (5), and is kept There is air. Compared with the prior art, the present invention has multiple energy consumption mechanisms under the action of wind or / and earthquake, and has strong energy consumption capability.

Description

technical field [0001] The invention relates to the technical field of vibration control of civil structures, in particular to an adjustable jacket-type tuning damper for offshore wind power generators. Background technique [0002] As a renewable energy source, wind energy has attracted much attention over the past few decades. Although the corresponding installations have an extremely long historical background, modern wind turbines only took shape in the early 20th century, such as Denmark, Germany, the United States, India and Italy (Vestergard, Brandstrup, & Goddard, 2004). In the past time, offshore turbines have received more and more attention because of their stability and high efficiency. At the same time, new problems in the impact of sea waves and special structures have also attracted extensive attention in the engineering community. [0003] Generally speaking, the supporting structures of offshore wind turbines mainly consist of monopile, tension leg platform...

AI Technical Summary

Problems solved by technology

However, the existing jacket-type tuned damper has two obvious defects: (1) the inherent damping is small, and the energy dissipation capacity and vibration control ability are weak; (2) the welded joints in the jacket-type support are extremely Easy to fatigue, unable to meet the fatigue resistance performance of offshore wind turbines under dynamic response

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