Floating body equipment capable of preventing tower vibration

Abstract

The invention discloses floating body equipment capable of preventing vibration of an enclosing and protecting structure. The equipment comprises floating bodies surrounding the enclosing and protecting structure and an excitation device capable of excite the floating bodies to vertically float; the excitation device comprises a tether which is connected with the floating bodies to prevent the floating bodies being disengaged from the surrounding and protecting structure. When the floating bodies vertically float, an air flow boundary layer of the outer wall of a tower can be destroyed, so that the cause of vortex-induced vibration is directly prevented; change of aerodynamic configuration is obtained, so that an air-dynamical coefficient C decreases (the along-wind vibration amplitude is reduced ), and the vortex-induced resonance amplitude A is also reduced; through vertical floating of the floating bodies, the upper and lower sections of nearby flow fields are disturbed and destroyed, so that the correlation between upwind air flow near the floating body is upset, accordingly the consistency between the vortex shedding frequency of air flow of the floating body and other positions is upset, and thus, the combined action of the correlation and the consistency is weakened, so that vortex-induced vibration of the tower is prevented.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a floating body device for suppressing tower vibration. Background technique [0002] Please refer to Picture 1-1 , Picture 1-1 Schematic diagram of wind power generation equipment. [0003] The foundation of the wind power generation equipment is the tower tube 10, which acts as a load bearing and enclosure for the whole machine. As an example, take a circular section tower tube 10 as an example. The tower tube 10 can be a steel tube, or a steel tube and a steel tube. Combination of concrete towers. The tower 10 carries the nacelle 30 of the wind power generation equipment, the generator and the wind turbine 20 . The wind power generating set composed of the tower 10, the wind turbine 20, the nacelle 30 and the generator completes the task of obtaining wind energy and converting it into electrical energy. The converted electric energy is transmitted through the power tra...

AI Technical Summary

Problems solved by technology

[0030] The wind speed of the air flow will change. If the characteristic parameters (pitch and height) of the helix 10a (or spiral plate) are processed to change according to the change of the wind speed of the air flow, the corresponding manufacturing cost and maintenance cost will increase significantly.

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