Guide-type vertical-axis wind turbine with multisection combined vanes

Abstract

The invention relates to a guide-type vertical-axis wind turbine with multisection combined vanes, which comprises an inducer and a wind wheel, wherein guide vanes in the inducer are composed of an inlet radial section, a middle transitional section and an outlet guide section, and form a smooth curve composed of two straight-line segments and a circular arc which is respectively tangent to the two straight-line segments; vanes in the wind wheel are composed of an inlet circular arc section and an outlet straight-line segment; and the upper cover plates and the lower cover plates of the inducer and the wind wheel are respectively provided with vent holes. The invention has the advantages of strong wind energy collection capability, low flow loss, high guide property, high aeroperformance, simple processing technique and the like, and has the characteristic of high utilization ratio of wind energy.

Description

technical field [0001] The invention relates to a guide type vertical axis wind turbine composed of multi-section combined blades, in particular to a wind guide wheel in which multi-section combined guide blades are arranged equidistantly along the circumferential direction, and the inside of the wind wheel is equidistant in the circumferential direction. A guide type vertical axis wind turbine with arranged multi-section combined fan blades. Background technique [0002] The wind turbine is the power source of the wind power generation system, which converts wind energy into mechanical energy, and then drives the generator to generate electricity. According to the structural form, wind turbines are generally divided into two types: horizontal axis and vertical axis. The horizontal axis wind turbine has been well developed and has been widely used as the mainstream type of wind turbine because of its high efficiency. However, due to the disadvantages of high installation d...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of wind turbine is that the connection between the blades and the rotating shaft will block the entire flow channel, and the upper and lower cover plates are solid circular plates, so the fluid flowing into the inside of the wind wheel will be blocked, and the resistance will increase. There will also be rolling friction to reduce the efficiency of wind energy utilization

When fluid flows through a solid cover, wind energy is largely dissipated due to strong boundary layer friction losses on the upper and lower covers, which in turn hinders its ability to convert into rotational mechanical energy

In addition, if the fluid cannot flow out of the rotor area well after impacting the blade, it will have a serious impact on the subsequent flow

Therefore, the structural optimization of the upper and lower cover plates of the wind rotor will definitely have a positive impact on improving the aerodynamic effect of the entire wind rotor, but it is rarely mentioned in various domestic patents

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