Bi-directional tidal flow hydroelectric turbine

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

Patent

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F03B 13/10 (2006.01) F03B 13/26 (2006.01)

Patent

CA 2657562

A hydroelectric turbine for the production of electricity from tidal flow forces, the turbine having a rotor with an open center such that the blades (34) are mounted between an inner rim (32) and outer rim (33), wherein retaining members (22, 23) and anti-friction members (7, 72) are provided to limit movement of the rotor relative to the housing (21) in either axial direction, such that water flow (99) in either direction operates the turbine, but wherein the retaining members (22, 23) and the anti-friction members (71, 72) allow the rotor to shift in either axial direction in response to water flow. The anti-friction members limiting rotor travel in the axial direction are preferably of increased thickness, such that as the anti-friction members wear down, the rotor is able to shift relative to the housing in the axial direction.

L'invention concerne une turbine hydroélectrique pour la production d'électricité à partir de forces houlométriques, la turbine possédant un rotor avec un centre ouvert de telle sorte que les pales (34) sont montées entre un rebord interne (32) et un rebord externe (33), les éléments de retenue (22, 23) et les éléments antifriction (7, 72) étant aménagés pour limiter le mouvement du rotor par rapport au logement (21) dans une direction axiale, de telle sorte que l'écoulement d'eau (99) dans l'une ou l'autre direction fait fonctionner la turbine, mais les éléments de retenue (22, 23) et les éléments antifriction ( 71, 72) permettant au rotor de se déplacer dans l'une ou l'autre direction axiale en réaction à l'écoulement d'eau. Les éléments antifriction limitant la course du rotor dans la direction axiale sont de préférence d'épaisseur accrue, de telle sorte que, avec l'usure des éléments antifriction, le rotor peut se déplacer par rapport au logement dans la direction axiale.

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