A power generation device that harvests fluid kinetic energy using the swing-torsion coupling motion of an oscillating airfoil

Abstract

The invention discloses a generating device for collecting fluid kinetic energy through oscillating airfoil swing-torsion coupled motion. The generating device comprises a horizontal shaft and a vertical shaft which are perpendicular and are fixedly connected with each other. The end face of the free end of the vertical shaft is provided with a blade. The blade and the vertical shaft can do oscillating motion around the horizontal shaft, and the blade can do twisting motion around the axis of the vertical shaft. The two ends of the horizontal shaft are provided with the first end and the second end respectively. The first end is fixed in the peripheral direction and in the radial direction and can move in the axial direction along the horizontal shaft, and the second end is used for being connected with a power device. Through the generating device for collecting fluid kinetic energy through the oscillating airfoil swing-torsion coupled motion, the device is similar to wings of dragonflies, and no extra device for converting translational motion into rotation required by an electric generator is needed; and airfoil rotating energy is provided directly from energy of swing motion, and no extra power device or control device is needed.

Description

Technical field: [0001] The present invention relates to a power generation device, in particular to a wind or hydroelectric power generation device, and in particular to a power generation device for collecting fluid kinetic energy by utilizing the oscillating airfoil's sway-torsional coupling motion. Background technique: [0002] With population growth, economic development and social progress, people's demand for energy, especially clean energy, is increasing. The power generation of traditional hydropower plants and wind turbines is increasing year by year, but their impact on the environment is also increasingly concerned. For example, the impact of hydropower stations on the upstream and downstream ecology and local landforms, the noise pollution of large wind turbines and their impact on the migration of migratory birds. In this context, conventional turbines and fans and their alternatives or supplements have been developed. Among them, the energy absorption of th...

AI Technical Summary

Problems solved by technology

[0003] The existing oscillating airfoil energy-absorbing mechanism mainly uses translation in the direction perpendicular to the incoming flow. This device needs to limit the degree of freedom of the blade in two sections of the blade, resulting in a more complex mechanism and poor adaptability; The power of the device blade rotation comes from the motor, which means that an additional power device and control mechanism are required to realize the rotation of the blade, thereby reducing efficiency and increasing cost

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