A Biaxial Membrane Oscillating Turbine

Abstract

The invention discloses a biaxial membrane swing type water turbine. The fixed rectangular blade bracket is used to install the membrane blade structure, which can increase the number of blades that can be attached to a unit water turbine structure, and at the same time, the membrane blade can be pushed by force on three water surfaces. The transmission shaft rotates in the same direction, and the film blades on the rear side of the rectangular blade bracket facing the water flow direction will form a certain flow diversion phenomenon, reducing the reverse torque generated on the reverse water surface, so that the overall turbine has a higher energy utilization coefficient, and at the same time S-shaped resistance blades are installed on the transmission shaft, which further improves the overall performance and self-starting performance, and also avoids the existence of dead points of the turbine. The rectangular frame and the use of film materials can reduce the rigid swing blade design due to the inertia of the blade itself. The hysteresis effect is generated, and at the same time, the cavitation effect of the blade caused by the sudden pressure change is avoided at the tail of the blade, which prolongs the life of the blade.

Description

technical field [0001] The invention belongs to the technical field of ocean energy power generation, and in particular relates to a biaxial membrane swing type water turbine. Background technique [0002] With the rapid development of urban modernization and industrialization, energy has already become an important factor affecting the rapid economic and social development. Commonly used traditional energy such as coal, oil, natural gas and other fossil fuels cannot be regenerated in a short period of time, and will cause damage to the natural environment while being consumed. For the sustainable development of the environment, it is imminent to develop alternative energy sources. [0003] As a new type of green renewable energy, ocean energy mainly includes tidal energy, tidal current energy and wave energy. my country has a long coastline and vast sea area, and has abundant ocean energy reserves. It is one of the areas with the highest power density of tidal current ene...

AI Technical Summary

Problems solved by technology

However, most of the existing vertical axis turbines use the circular rotation of the blades to convert the ocean current energy into mechanical energy. According to the existing research results, the main power generation area is the windward side, but the windward side accounts for a larger proportion of the circular rotation. Low, combined with the existence of a large interception area to generate resistance or no power, resulting in overall low efficiency

[0004] Some of the existing technologies use swingable blades to increase the power generated by the blades in the resistance zone or reactive power zone, while the swingable blades used in the prior art have hysteresis due to inertia, or require additional mechanical The structure or automatic control device controls the swing of the blades, which complicates the structure and reduces the overall efficiency

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