Lift-drag combined double-chain water turbine

Abstract

The invention discloses a lift-drag combined double-chain water turbine. The water turbine is characterized in that an internal resistance water wheel structure is arranged between two lift water turbine shafts, three sides of film blades in the internal resistance water wheel structure are fixedly connected with a frame of a rectangular blade bracket, and a film blade structure is mounted by utilizing the fixed rectangular blade bracket; the number of additional blades of a unit water turbine structure can be increased, meanwhile, the film blades can be stressed on three water surfaces to to push transmission shafts to rotate in the same direction, and on the other reverse water surface, the film blades at the rear side of the rectangular blade bracket facing the water flow direction can form a certain flow guide phenomenon; and reverse torque generated on a reverse water surface is reduced, the whole water turbine has a higher energy utilization coefficient, the speed is increased through an inner resistance water wheel structure by means of resistance of water flow, and the energy utilization coefficient of the whole water turbine is increased through the optimal working condition of the structure where lift type blades and the film blades coincide. The blade cavitation effect caused by sudden pressure change is avoided.

Description

technical field [0001] The invention belongs to the technical field of ocean energy power generation, and in particular relates to a lift-drag combined double-chain 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...

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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