Variable geometry water turbine for ocean current energy power generation and method thereof

Abstract

The invention discloses a variable geometry water turbine for ocean current energy power generation and a method thereof. The variable geometry water turbine for ocean current energy power generation comprises a blade, a hub and a transmission shaft, wherein the blade is connected with the hub through the transmission shaft and is capable of freely rotating around the transmission shaft, and the transmission shaft is connected with the hub through a flange. When current impacts a turbine, the blade on the working side of a water turbine can be gradually opened. When the root of the blade is perpendicular to the hub, the blade is completely opened, and simultaneously, under the impact of the current, the blade pushes the hub to rotate. When the hub rotates to the resistance side, under the impact of the current, the blade is gradually closed. Therefore, the current flows through the water turbine with the minimum resistance, and the problem that a part of the blade hinders rotation of the water turbine is resolved. The variable geometry water turbine for ocean current energy power generation and the method thereof are not only simple in structure but also greatly improve conversion efficiency of the water turbine.

Description

technical field [0001] The invention relates to a device in the field of ocean energy utilization, in particular to a variable geometry water turbine for ocean current power generation. Background technique [0002] Ocean current energy refers to the kinetic energy of seawater flow, mainly refers to the relatively stable flow in submarine channels and straits and the energy generated by regular seawater flow caused by tides. It is a kind of ocean energy in the form of kinetic energy. There are two main types of hydro turbines used for ocean current power generation: horizontal axis and vertical axis. However, from the analysis of the current research level at home and abroad, the efficiency of these two types of turbines has not reached the expected level. Therefore, how to improve the efficiency of ocean current power generation is a key problem to be solved in the development of ocean current energy. The low efficiency of ocean current power generation is due to two reaso...

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Problems solved by technology

However, the disadvantage of this patent is that the structure of the entire device is relatively complex, which is not conducive to the application in complex marine environments. Secondly, the water turbine is not specially designed for the characteristics of seawater flow, so its efficiency and operating life will be affected.

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