Ocean current energy power generation type bidirectional impeller of water turbine with flow guide cover

Abstract

The invention discloses an ocean current energy power generation type bidirectional impeller of a water turbine with a flow guide cover. The bidirectional impeller comprises a rotary shaft and a wheel hub which are mounted in an impeller chamber, and 5-7 S-shaped blades mounted and fixed on the wheel hub, wherein the two sides of the impeller chamber are a water inlet side and a water outlet side respectively. During forward power generation, water stream axially flows to the water outlet side from the water inlet side through the flow guide cover, and during reverse power generation, the water stream axially flows to the water inlet side from the water outlet side; the wheel hub is spherical; the S-shaped blades are S wing sections with unequal thicknesses and unequal chord lengths from the root parts of the blades to the outer edge of the impeller; the S wing sections are arranged in a bilateral symmetric manner; the wing chords of the left wing sections and the right wing sections are collinear. The bidirectional impeller adopting the S-shaped blades is simple in structure, easy to process and manufacture and low in economic cost, and can be used for efficiently converting kinetic energy of ocean current flowing in a bidirectional manner, thereby effectively utilizing the kinetic energy of the ocean current and increasing the utilization rate of water energy.

Description

Technical field: [0001] The invention relates to a water turbine impeller, in particular to a water turbine impeller for bidirectional power generation with a guide cover used in ocean current power generation, and belongs to the technical field of fluid machinery and energy power. Background technique: [0002] Energy has always been an important material basis for the economic development of countries around the world. With the development of economy and society, my country's demand for electric energy has increased sharply. However, fossil energy poses an increasing threat to the living environment of human beings. In order to promote energy conservation and emission reduction, actively respond to In response to climate change, my country regards renewable energy as an important part of its future energy strategy and a priority area for energy development. As a clean and renewable energy source, ocean current energy has little impact on the environment and is rich in resou...

AI Technical Summary

Problems solved by technology

However, due to the influence of factors such as the earth's rotation, atmospheric motion, planetary wind system, and seawater density, the ocean current flows in one direction in a certain period of time, and flows in the opposite direction in another period of time. The direction is uncertain, and the flow velocity of the ocean current is small and the water head is low. Therefore, when using ocean current energy to generate electricity, there are special requirements for the turbine. However, the traditional two-way blade reversible turbine has a complicated unit structure. Two-way impeller efficiency is relatively low

The one-way blades of the ocean current power generation turbine can only use the one-way flow of water kinetic energy to generate electricity, and the utilization rate of ocean current energy is low

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