A lift-drag combined double-chain water turbine

Abstract

The invention discloses a lift-drag combined double-chain water turbine. By arranging the internal resistance water wheel structure between two lift water turbine shafts, the three sides of the membrane blades in the internal resistance water wheel structure are fixed to the frame of the rectangular blade support. Connection, using a fixed rectangular blade bracket to install a membrane blade structure, can increase the number of blades that can be attached to a unit turbine structure, and at the same time use membrane blades to push the drive shaft to rotate in the same direction on the three water surfaces, and in the other direction On the water surface, the thin film blades on the rear side of the rectangular blade bracket facing the direction of the water flow will form a certain flow diversion phenomenon, reduce the reverse torque generated on the reverse water surface, and make the overall turbine have a higher energy utilization coefficient. The speed of the resistance water wheel structure increases the overall energy utilization coefficient of the turbine by overlapping the optimal working conditions of the lift blade and the film blade structure, and avoids the cavitation effect of the blade due to sudden pressure changes.

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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