Wind blade frame and wind blade made of it

Abstract

The invention belongs to the technical field of wind power generation, and relates to a fan blade manufactured by using a fan blade frame. The frame comprises supporting rods and a beam, and a middleshaft of the frame is provided with a through hole, wherein the supporting rod is in a waney arc structure, a rotation shaft connecting end of the arc structure is connected to the middle part of thebeam, and the outer diameter and the wall thickness of each supporting rod are gradually reduced. The beam is a U-shaped arc, and the end face of a rotation shaft connecting end of each supporting rodis provided with a plurality of connection holes which are fixedly connected with a plurality of rotation shafts. The upper parts and the lower parts of the supporting rods of the frame are twisted to form a twisted frame. The invention has the advantages of more contact surfaces with natural wind, high wind energy utilization rate, good stability due to the double-rod connection with the rotation shafts, length reduction compared with other fan blades with the same power and great cost reduction. The fan blade frame is of a detachable type and can be transported detachably when required to be transported, thus the fan blade frame is convenient to transport.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, in particular to a wind blade frame and a wind blade made of the same. Background technique [0002] Wind power is a green energy that is non-polluting, renewable and reusable. It is one of the environmentally friendly energy sources advocated in the world today. As a component in wind power equipment that is in direct contact with natural wind, wind blades have a direct impact on the absorption of wind energy. How much wind energy is converted into electrical energy, the current wind power generation equipment can only convert a small part of wind energy into electrical energy, and the energy utilization rate is low. The main reason is that the wind blades cannot absorb wind energy more. Most of the leaves are in the shape of a thick long strip of airfoil, and a single rod is connected to the rotating shaft. The windward side of its cross section is a convex arc shape. Under the ac...

AI Technical Summary

Problems solved by technology

[0002] Wind power generation is a green energy source that is non-polluting, renewable and reusable. It is one of the environmentally friendly energy sources advocated in the world today. As a component in wind power equipment that is in direct contact with natural wind, wind blades have a direct impact on the absorption of wind energy. How much wind energy is converted into electrical energy, the current wind power generation equipment can only convert a small part of wind energy into electrical energy, and the energy utilization rate is low. The main reason is that the wind blades cannot absorb wind energy more. Most of the leaves are in the shape of thick long airfoils, and the single rod is connected to the rotating shaft. The windward side of its cross section is convex arc shape. Under the action of wind, the windward side itself will generate two opposite rotational forces. Moreover, the air resistance of the fan blade is also relatively large during the rotation process, which makes the working efficiency of the fan blade low, and the stability of the connection between the single rod and the rotating shaft is also poor during the working process. Not only that, because most of the fan blades are now integral structure, it is extremely inconvenient to carry when used on large wind power equipment

Images