A double-shaft water turbine device with s-shaped blade composite membrane blade

Abstract

The invention discloses an S-shaped blade composite membrane blade biaxial water turbine device, which uses a fixed rectangular blade bracket to install a 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 utilizes the membrane blade to make it evenly distributed on three water surfaces. It can push the transmission shaft to rotate in the same direction under force, and the thin film blades on the rear side of the rectangular blade bracket facing the direction of water flow will form a certain flow diversion phenomenon, reducing the reverse torque generated on the reverse water surface, so that the turbine as a whole has higher energy Utilize the coefficient, and install S-shaped resistance blades 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 design of rigid swing blades. Due to the hysteresis effect caused by the inertia of the blade itself, the cavitation effect of the blade caused by sudden pressure changes is also avoided at the tail of the blade, prolonging 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 an S-shaped blade composite film blade biaxial water turbine device. 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 dens...

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

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