Towers and Wind Turbines

Abstract

The invention provides a tower and a wind power generating set. The tower includes: a cylindrical top section, the upper end of which is used for connecting with the nacelle; a special-shaped section, which is connected to the lower end of the cylindrical top section, and has a first leading edge portion and a first rear portion opposite to the first leading edge portion. The special-shaped section is rotatable along the circumferential direction of the tower, and the special-shaped section is an axisymmetric figure with respect to the chord line from the first leading edge section to the first trailing edge section, and the first trailing edge section is far away from the first leading edge. The portion is oriented in a streamlined outward bulge to form a first bulge portion. According to the present invention, the vortex-induced vibration can be reduced, the overall stability and safety of the wind generator can be improved, and resonance and instability of the wind generator can be prevented. At the same time, steel can be saved, manufacturing process can be saved, and conventional flanges can be used for connection.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, and more particularly, to a tower and a wind generator set. Background technique [0002] The wind turbine includes a tower for supporting the nacelle and the impeller. Existing towers are generally in the shape of regular cylinders. When the towers are in the shape of cylinders, vortex-induced vibration will occur whether it is an onshore wind turbine or an offshore wind turbine. [0003] For onshore wind turbines, with the continuous increase of the height of the wind turbine, the vortex-induced vibration effect of the cylindrical tower is continuously increased by the laminar and turbulent air flow, which poses a safety hazard to the operation of the wind turbine. In addition, due to severe weather such as typhoons regularly occur every year, for onshore wind turbines closer to the coast, fluids such as seawater and strong winds have a strong force on the tower, and the ...

AI Technical Summary

Problems solved by technology

In addition, the underwater structure of the wind turbine is under the action of ocean currents and waves for a long time. When the fluid (sea water) flows through the underwater structure of the cylindrical tower, phenomena such as Karman vortex street will occur. The axial force will cause the vibration of the underwater foundation structure, reduce the stability of the underwater foundation, and have an adverse effect on the smooth operation of the offshore wind turbine.

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