Fibonacci spiral water turbine using tidal current energy for generating electricity

Abstract

The invention relates to a Fibonacci spiral water turbine using tidal current energy for generating electricity. The water turbine comprises a spindle, a case, a thrust bearing, a coupler, an electric generator, a rack, a base and a hydrocone; the lower portion of the case is supported through the rack and the base; the water turbine is characterized by further comprising a spiral blade in a two-dimensional Fibonacci spiral line shape, a similarly-conical hub immersing in the water tidal current and a sealing cover; the electric generator is connected with the similarly-conical hub through the coupler and the spindle, and the sealing cover is arranged at the connecting position of the spindle and the similarly-conical hub; and the hydrocone is arranged at the position, located on the rear side of the similarly-conical hub, of the tail portion of the case, and the spiral blade is gradually changed and stretched through the thrust bearing in the axial direction of the similarly-conical hub to form a space distortion shape to be evenly distributed on the periphery of the similarly-conical hub to do the constant-speed rotation motion. According to the water turbine, hydraulic friction collision is greatly reduced, losses of an inlet water head are reduced, therefore, the energy obtaining efficacy of the water turbine is improved, and the aim that marine fish smoothly passes through the water turbine is well achieved.

Description

technical field [0001] The invention belongs to the technical field of water turbine power generation, in particular to a Fibonacci spiral water turbine using tidal current energy to generate electricity. Background technique [0002] In recent years, with increasing attention to marine resources and marine rights and interests, human exploration and development of tidal current energy is gradually heating up. As an important part of ocean energy, tidal current energy has predictability, high power density and energy stability. Outstanding advantages, development and utilization have attracted much attention. [0003] The development of tidal current energy is mainly concentrated in the field of power generation technology, and the tidal current energy turbine is its core energy conversion device. According to the structural classification, the existing tidal energy turbines mainly include horizontal axis turbines, vertical axis turbines and oscillating hydrofoils. These ti...

AI Technical Summary

Problems solved by technology

According to the structural classification, the existing tidal energy turbines mainly include horizontal axis turbines, vertical axis turbines and oscillating hydrofoils. These tidal energy turbines have their own advantages and disadvantages. Horizontal axis turbines have relatively mature technology and high energy harvesting efficiency, but serious yaw loss ; Although the structure of the vertical axis turbine is simple and easy to maintain, it still has the problems of difficult self-starting and low efficiency; the research on the oscillating hydrofoil started relatively late and is still in the exploratory stage

At the same time, the vibration and noise of these water turbines are large, which has a certain degree of impact and damage on the marine environment on which marine organisms such as fish and cephalopods depend.

Judging from the published patented technology, it is also impossible to enter the practical stage due to the aforementioned deficiencies

[0004] Chinese patent application 201210556394.X discloses a "compound tidal energy vertical axis turbine". Although this scheme adopts an external H-shaped structure and an internal S-shaped structure, it has the advantages of fast start-up performance and good stability. Direction arrangement makes the whole machine less efficient and has a greater impact on marine life

Chinese patent application 201310291232.2 discloses "a tidal current energy harvesting turbine with variable blade posture". Too complex, poor economy, no practical value

Images