Apparatus and method for generating power from moving water

F - Mech Eng,Light,Heat,Weapons – 03 – B

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F03B 17/06 (2006.01)

Patent

CA 2492104

Apparatus (100) for generating power from a water current in a body of water comprises a longitudinally extending flotation platform (10) for maintaining the apparatus afloat in the body of water and a water turbine (101) operatively carried by the platform (10) for generating power in response to water current in the body of water. The platform (10) is configured to enhance the flow of water current over the turbine blades (120) and, as well, to enable a number of like platforms each with an associated turbine or turbines to be arrayed in a cooperative manner. The water turbine may comprise a turbine rotor with a plurality of relatively narrow, flexible elongated blades (120) arranged in circumferentially spaced rows extending along the rotor. In each row, the blades are distanced from each other in succession by a space. The rows may be staggered with respect to each other such that the blades in a given one of the rows circumferentially align with the spaces between blades in the row immediately circumferentially forward of the given row and with the spaces between blades in the row immediately circumferentially rearward of the given row.

L'invention concerne un dispositif pour la production d'énergie à partir d'eau vive dans un plan d'eau, qui comprend une plate-forme de flottaison d'extension longitudinale maintenant le dispositif à flot dans l'eau, et une turbine soutenue opérationnelle par la plate-forme pour la production d'énergie à partir de l'eau vive. La plate-forme améliore le flux d'eau vive sur les pales de turbine et permet d'installer une turbine ou une série de turbines similaires en coopération. La turbine peut comprendre un rotor à plusieurs pales allongées, flexibles, relativement étroites, en rangées espacées sur une circonférence le long du rotor. Dans chaque rangée, les pales sont espacées successivement par un intervalle. Elles peuvent être décalées mutuellement, selon un alignement circonférentiel entre les pales d'une rangée donnée et les intervalles qui séparent les pales de la rangée immédiatement en avant de la rangée donnée sur la circonférence, d'une part, et les intervalles qui séparent les pales de la rangée immédiatement en arrière de la rangée donnée sur la circonférence.

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