Steel and plastic composite bionic blade

Abstract

The invention discloses a steel and plastic composite bionic blade, which comprises a blade body, a rotary shaft and a blade holder. The thickness of the blade body is reduced from the middle to the edge in a streamline manner, the blade body is in the shape of an annular sector, the cross section of the blade body is arched, the rotary shaft is arranged on the short-arc side of the annular sector and deviates from the center line of the surface of the blade body, namely the rotary shaft is arranged at the front end of the rotation direction of the blade. The blade body is provided with a plurality of longitudinal reinforced ribs and a plurality of transverse reinforced ribs, and a blade elastic area is arranged at the back end of the blade body. The integral blade is in the shape of an annular sector which is smooth and streamlined and covered with plastics. The steel and plastic composite bionic blade utilizing reinforced bars as ribs is formed by plastics and a web body. Due to the fact that the stress of the blade elastic area is different along with change of impact force of water flow to a water turbine, the angle of the blade is changed automatically, instability caused by change of the impact force is compensated and stability of rotation speed of the water turbine is improved under elasticity and flexibility action of the blade, and accordingly stability in voltage and frequency of a water turbine power generator is guaranteed and the adaptable flow range of the water turbine power generator is wider while efficiency thereof is higher.

Description

technical field [0001] The invention relates to a blade structure of a hydraulic generator, in particular to a composite bionic blade of a hydraulic generator. Background technique [0002] Among the technologies using new energy, hydropower technology has received extensive attention. Its principle is to generate electricity through flowing water acting on water wheels, generally including water turbine generators, pumps, high-level water towers, filling nozzles and electric energy. Management and other components, the structure is relatively complicated, and the cost is very high. The construction of hydropower stations must also be carried out according to specific geographical conditions. Hydropower generation must build dams and have water flow drops. Therefore, the construction of hydropower stations is very restricted. However, my country and the world are rich in hydropower resources. Especially in some cities, roads, bridges, enterprises and residents built by rivers ...

AI Technical Summary

Problems solved by technology

[0003] The blades of traditional hydroelectric generators are rigid, so that the rotation of the blades is determined by the flow velocity of the water flow. The impact force generated by the rapid water flow is strong, and the blades rotate quickly. The impact force generated by the slow water flow is weak, and the blades rotate slowly. The working efficiency of the generator will be affected, and a complex turning device must be set for adjustment

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