Flap type vertical axis water turbine blade structure

Abstract

The invention discloses a flap type vertical axis water turbine blade structure. The flap type vertical axis water turbine blade structure comprises blades and flaps, the blades are fixed to a propeller hub in a radial mode at equal angles, a main rotating shaft fixed to a main water turbine body is arranged in the middle of the propeller hub, protruding shaft sleeves are arranged on the outer edges of the blades, notches concaved inwards are formed in the parts, matched with the shaft sleeves, of the flaps, shaft holes are formed in the outer edges, provided with the notches, of the flaps, and the blades and the flaps are connected through flap pivots penetrating through the shaft sleeves and the shaft holes. The connection mode is similar to the connection structure of a hinge, and connection can be more effective and tighter.

Description

technical field [0001] The invention relates to the technical field of tidal current energy generation, in particular to a blade structure of a flap type vertical axis water turbine. Background technique [0002] The tidal current mainly refers to the regular sea current generated along with the tidal phenomenon, and the tidal current changes its magnitude and direction twice a day. Tidal energy is different from tide. Tidal is the rise and fall of seawater caused by high tide and ebb tide. Tidal current is the horizontal movement of seawater. The energy carried by tide is potential energy, which can be utilized by damming and storing water for power generation, while tidal energy power generation is Directly use mechanical devices such as tidal currents to impact blades to drive generators to generate electricity. [0003] Compared with conventional energy sources, tidal current energy has the following advantages: clean and renewable; large total energy reserves; regular ...

AI Technical Summary

Problems solved by technology

[0005] The defect of the current conventional tidal current energy generation unit is that: if the ordinary vertical axis turbine is used, when the tidal flow direction is perpendicular to the axial direction of the turbine, the blades of the turbine will rotate in the opposite direction to the direction of the incoming flow for half of the time, and the incoming flow will hinder the turbine. rotation

If the turbine is designed to rotate clockwise, when the blades of the turbine turn to the left, the direction of rotation will be opposite to the flow direction of the current flow, hindering the rotation of the turbine and reducing its energy-capturing efficiency

Images