Deformable water turbine power generation device utilizing ocean current energy

Abstract

The invention discloses a deformable water turbine power generation device utilizing the ocean current energy. When the device is impacted by ocean current, a first blade and a second blade of the device deform under the impact effect of the ocean current, the blades expand outwards, and then the contact area between the blades and the water current is increased, so that the effective torque effect is provided for the device; meanwhile, a third blade and a fourth blade deform under the combined action of driving of the linkage mechanism and ocean current impact, so that the projection area in the water flow impact direction is reduced, and then the torque resistance influence of the third blade and the fourth blade on the water turbine is remarkably reduced; the four blades rotate under the action of the resultant torque, so that the energy conversion efficiency of the water turbine device is improved, and the technical problem that the energy conversion rate of a traditional Savonius water turbine is low is solved.

Description

Technical field [0001] The present invention belongs to the field of ocean renewable energy development and utilization, and in particular to a deformable turbine power generation device using sea flow energy. Background technique [0002] The turbine is a power machine that converts the energy of the water flow into a rotating mechanical energy. It is an essential part of the hydraulic power generation industry. It is an important equipment that makes full use of clean renewable energy to achieve energy conservation and emission reduction, reduce environmental pollution. The turbine is mainly divided into a horizontal axis, vertical axis, and oscillating water wings. Among them, the vertical axis turbine has the advantages of distinguishing between the discharge, the blade structure is simple, low cost, easy processing, and the low working speed, and therefore, the vertical axis turbine has a huge potential. [0003] As a vertical axle turbine, the Savan turbine is usually compo...

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Problems solved by technology

[0004] However, the traditional Savonius turbine has always had an obvious disadvantage, that is, the energy conversion rate is relatively low. Even under the condition of the water flow near the sea surface with a velocity of 1m / s, the maximum conversion rate of the turbine will not exceed 25%. The main reason is Yes: When the water flow hits the Savonius turbine, one of the two blades of the Savonius turbine is the concave side facing the direction of the water flow, and the other blade is the convex side facing the direction of the water flow, which results in The effective torque is generated for the water turbine, and the convex side blades generate resistance torque for the water turbine, and the two blades rotate under the action of the combined torque, and then drive the generator to generate electricity. It can be seen that the resistance torque generated by the convex side blades leads to Reduced energy conversion efficiency of Savonius turbines

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