Tuned mass damping vibration attenuation device for floating offshore wind turbine

Abstract

The tuned mass damping vibration attenuation device for the floating offshore wind turbine comprises a top plate and a bottom plate which are installed on the inner wall of a wind turbine tower, and a mass block is arranged between the top plate and the bottom plate; a plurality of rigid connecting rods are hinged to the inner wall of the fan tower drum in the circumferential direction at equal intervals, the tail ends of the rigid connecting rods are hinged to the mass block, and dampers are installed on the rigid connecting rods; an upper vertical damping mechanism and a lower vertical damping mechanism are installed at the upper end and the lower end of the mass block respectively, the tail end of the upper vertical damping mechanism is connected with the top plate, and the tail end of the lower vertical damping mechanism is connected with the bottom plate. According to the invention, multi-dimensional vibration control is carried out on the fan; the tuned mass damper is composed of the mass block, the rigid connecting rod and the damper to slow down movement of the draught fan in the horizontal direction, meanwhile, when the draught fan moves vertically, the damper restrains the vertical movement of the draught fan through movement energy consumption of the mass block, the upper vertical damping mechanism and the lower vertical damping mechanism, and the draught fan is kept stable.

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