Device for improvement of aerodynamic performance of flexible blade of large wind machine

Abstract

The invention relates to a device for the improvement of aerodynamic performance of a flexible blade of a large wind machine. The device comprises a blade aeroelastic response monitoring system, a data integration and processing system, a blade steering system, an added mass adjustment system and a vortex generation system, wherein the blade aeroelastic response monitoring system consists of an intelligent monitoring control unit, a data acquisition unit and a sensor; the data integration and processing system consists of a response converter, a vibration mode recognizer and an instruction generation module; the blade steering system consists of a control receiver, a posture adjustment module, a mechanical telescopic arm and fixing bolts; the added mass adjustment system consists of a control receiver, a water collecting tank, a water delivery pipe and a flow control valve; the vortex generator consists of a vortex generator part, tandem bolts and an actuator. The device is applicableto the field of wind machine safety design, an aeroelastic phenomenon of the flexible blade of the ultra large wind machine in a flow field can be inhibited effectively, and safe operation of the windmachine under the action of various natural flow fields is ensured.

Description

technical field [0001] The invention relates to the technical field of wind engineering, in particular to a device for improving the aerodynamic performance of flexible blades of large wind turbines. Background technique [0002] In recent years, with the increasing demand for clean energy in my country, the design and construction technology of wind turbines has been continuously improved, and its output power has also been increasing, from the initial 1.5MW to today's 5-6MW, and even 10MW that may be put into use in the future. Wind turbine. The improvement of the output power of the wind turbine has expanded the turning radius of the blades from the previous 30m to the current 90m, and the blades are becoming lighter and softer. During this process, the wind sensitivity of the blade is further enhanced, the frequency of fluid-solid coupling between the flow field and the structural blade is gradually increased, and the unfavorable aeroelastic phenomena such as static tors...

AI Technical Summary

Problems solved by technology

Existing wind-vibration control equipment is mostly used in long-span bridge projects, and mostly passive mechanical control measures and aerodynamic measures are mainly used, that is, through central slotting, adding deflectors, setting dampers and other measures to control bridge sections or hangers. The wind field response of the pole cannot actively adapt to changes in wind field parameters such as wind attack angle and yaw angle. Aiming at the aerodynamic response of the flexible blades of ultra-large wind turbines, the present invention proposes a method that can actively control the aerodynamic responses of various blades and record them in real time. Data Pneumatic Improvement Device

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