Trunk-free rotary table type vertical-axis wind turbine

Abstract

The invention discloses a trunk-free rotary table type vertical-axis wind turbine. The trunk-free rotary table type vertical-axis wind turbine is characterized in that two or more branch blade groups are radially arranged on a rotary table at intervals in an equal-radian manner, the diameters of rotation circles of blades and the vertical lengths of the blades are directly increased, and torque of the wind turbine is increased; parts, except for joints of the blades, of a support structure for supporting the blades are concealed in wings of the blades, and resistance of supports is converted into power for the blades; an outer rotor mode where existing blades and supports of the existing blades rotate around a main trunk is omitted, a blade impeller, the rotary table and a spindle are integrally assembled and are mounted on a rotor of a slewing bearing, and a power generator with a rotary shaft is directly driven by the spindle; the power generator is arranged between the rotary table and a fixed table and powers rotary table equipment, rotation angles of the blades are regulated by rotation drivers, and lubricating oil can be automatically injected into the slewing bearing which runs in an overhead manner. The trunk-free rotary table type vertical-axis wind turbine is applicable to medium and large-size vertical-axis wind power generation systems.

Description

technical field [0001] The invention relates to a vertical axis wind turbine, in particular to a vertical axis wind turbine without a backbone rotating disk. Background technique [0002] The horizontal axis wind power generation system is the mainstream type of wind power generation in the world today, with mature technology and large production batches. However, the shortcomings of the horizontal axis wind power generation system are becoming more and more obvious. Its starting wind speed is high, the working noise is loud, and the wind resistance is poor. Realize the direct drive of the wind turbine to the generator. The height of the tower or tower of the megawatt-level wind power generation system is mostly 70-80M, the diameter of the blade circle is as high as 135M, and the length of the blade is 65M. The data show that: the horizontal axis wind power generation system has developed to the top stage of history. [0003] From the beginning of the development of wind ...

AI Technical Summary

Problems solved by technology

Most of the recently developed H-type vertical axis wind turbines use low-power external rotor permanent magnet generators. Although this low-power power generation system can be used to light street lamps, it cannot be used for commercial power generation.

The structure of the wind turbine with the outer rotor is not conducive to driving a high-power rotary shaft generator

[0010] In the classic and existing vertical axis wind turbines, the blades and their brackets rotate around the backbone. This structure is not conducive to the introduction of power on the brackets and blades, and it is impossible to use motors on the rotating brackets or blades to adjust the rotation angle of the blades (now The blade angle of attack adjustment devices of wind turbines with vertical axis are all mechanical); the lubricating oil pipe cannot be connected, and the electric oil pump cannot be used to automatically add lubricating oil to the slewing bearings on the blades or brackets

Images