Novel fan blade and static stall control method thereof

Abstract

The invention discloses a novel fan blade and a static stall control method thereof. The novel fan blade comprises a blade main body, the blade static stall control modules are arranged on the surface of the front edge of the blade main body, each blade static stall control module comprises an elastic sealing structure connected with the surface of the blade main body, the air pressure in each blade static stall control module is adjustable, and when the air pressure in each blade static stall control module changes, the blade static stall control modules are connected with the blade main body. And the elastic sealing structure vibrates. The fan blade has the advantages that the blade main body and the blade static stall control module comprising the elastic sealing structure are combined, and the elastic sealing structure connected with the surface of the blade main body vibrates by adjusting the air pressure state in the blade static stall control module; and therefore, a stall vortex generated on the surface of the front edge of the blade main body is effectively broken, and the stall condition of the fan blade is actively adjusted.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a novel fan blade and a static stall control method thereof. Background technique [0002] In recent years, wind energy, as a large-scale commercialized clean renewable energy, has received extensive attention from all over the world. With the rapid development of my country's wind power industry, wind turbine blades continue to increase in size, and high-performance wind power blades have attracted worldwide attention. extensive attention. Wind power blades are the core components of wind turbines to capture wind energy, and their operating status is directly related to the utilization efficiency of wind energy. [0003] However, the wind turbine blades are often accompanied by the occurrence of stall during the operation. Usually, the stall phenomenon is mainly divided into dynamic stall and static stall. When the angle between the incoming wind speed and the chordwise dire...

AI Technical Summary

Problems solved by technology

However, the role played by the passive control method is limited. For example, when a vortex generator is installed on the fan blade, the stall adjustment effect of the vortex generator on the fan blade is constant and cannot be adjusted according to the actual working environment of the fan blade.

However, in practical applications, the resistance of the fan blades will continue to change due to the influence of the environment, and the above-mentioned passive control method has low adjustment flexibility.

Images