Variable-pitch control mechanism for small-sized wind generator

Abstract

The invention discloses a variable-pitch control mechanism for a small-sized wind generator. The variable-pitch control mechanism comprises a wind wheel, variable-pitch blades, pitch adjusting mechanisms and blade fixing mechanisms. A regularly-hexagonal frame is mounted on the wind wheel, and the three groups of pitch adjusting mechanisms and the three groups of blade fixing mechanisms are mounted on the frame at intervals; blades are mounted on the wind wheel via the blade fixing mechanisms, and can rotate on the blade fixing mechanisms; the variable-pitch blades are mounted on the corresponding blade through fixing pins and can synchronously rotate with the blades; the pitch adjusting mechanisms are matched with the variable-pitch blades and can automatically extend and contract when the variable-pitch blades rotate. The variable-pitch control mechanism disclosed by the invention is simple in structure and easy to mount and can effectively solve the problems of large impact force, easiness in damage and the like when the wind of a fixed impeller of the conventional small-sized wind generator is changed and realize the effect that the a wind generating set always maintains the best conversion efficiency and the maximum output power of the wind wheel at different wind speeds.

Description

technical field

[0001] The invention belongs to the field of wind power generation, and in particular relates to a pitch control mechanism for a small wind power generator. Background technique

[0002] The principle of wind power generation is to use the wind to drive the blades of the windmill to rotate, and then increase the speed of rotation through the speed increaser to drive the generator to generate electricity. According to the current windmill technology, power generation can be started at a breeze speed (the degree of breeze) of about three meters per second. The current wind-driven generators only charge the battery, and the battery stores the electric energy. The final electric power used by people has a closer relationship with the size of the battery. The size of the power mainly depends on the size of the air volume, not just the size of the head power. In the hinterland, small wind turbines would be more suitable than large ones. Because it is easier to b...

Examples

Embodiment Construction

[0023] see figure 1 , 2 , 3. A pitch control mechanism for a small wind power generator provided by the present invention includes a wind wheel 5 , blades 6 , a pitch adjustment mechanism 2 and a blade fixing mechanism 3 . The wind wheel 5 is equipped with a regular hexagonal frame, on which three groups of pitch adjustment mechanisms 2 and three groups of paddle fixing mechanisms 3 are installed, and the two mechanisms are installed alternately; the blade fixing mechanism 3 is composed of angular contact ball bearings 3a, The end cover 3b is composed of a fixing screw 3c, the fixing screw 3c installs the blade 1 on the wind wheel 5 through the end cover 3b, and the blade 1 can rotate on the blade fixing mechanism 3; the two ends of the blade 6 There is a hole-shaped chute, which is installed on the paddle 1 through a fixed pin 4; the pitch adjustment mechanism 2 includes an adjustment slider 2a, a thrust bearing 2b, a baffle plate 2c, an adjustment shaft 2d, a set screw 2e, ...

technical field

[0001] The invention belongs to the field of wind power generation, and in particular relates to a pitch control mechanism for a small wind power generator. Background technique

[0002] The principle of wind power generation is to use the wind to drive the blades of the windmill to rotate, and then increase the speed of rotation through the speed increaser to drive the generator to generate electricity. According to the current windmill technology, power generation can be started at a breeze speed (the degree of breeze) of about three meters per second. The current wind-driven generators only charge the battery, and the battery stores the electric energy. The final electric power used by people has a closer relationship with the size of the battery. The size of the power mainly depends on the size of the air volume, not just the size of the head power. In the hinterland, small wind turbines would be more suitable than large ones. Because it is easier to b...

Examples

Embodiment Construction

[0023] see figure 1 , 2 , 3. A pitch control mechanism for a small wind power generator provided by the present invention includes a wind wheel 5 , blades 6 , a pitch adjustment mechanism 2 and a blade fixing mechanism 3 . The wind wheel 5 is equipped with a regular hexagonal frame, on which three groups of pitch adjustment mechanisms 2 and three groups of paddle fixing mechanisms 3 are installed, and the two mechanisms are installed alternately; the blade fixing mechanism 3 is composed of angular contact ball bearings 3a, The end cover 3b is composed of a fixing screw 3c, the fixing screw 3c installs the blade 1 on the wind wheel 5 through the end cover 3b, and the blade 1 can rotate on the blade fixing mechanism 3; the two ends of the blade 6 There is a hole-shaped chute, which is installed on the paddle 1 through a fixed pin 4; the pitch adjustment mechanism 2 includes an adjustment slider 2a, a thrust bearing 2b, a baffle plate 2c, an adjustment shaft 2d, a set screw 2e, ...

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