Device for controlling turbine blade pitch

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

Patent

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Details

F03B 3/14 (2006.01)

Patent

CA 2729627

A device for controlling a turbine blade pitch, comprising a turbine blade spindle (14) for connection to the turbine blade rotatably connected to a support element (28). An actuator (32) is connected to the spindle (14) and via an actuation element (38) to the support element (28). The actuator (32) is operable to rotate the spindle (14) about a spindle longitudinal axis, thus effecting a turbine pitch adjustment. Preferably, the support element (28) comprises a toothed arc (28), connected via gear wheels to a pitch adjusting drive unit (18). The invention provides an auxiliary, and/or emergency pitch adjustment device, suitable for e.g. rapid turbine feathering.

L'invention concerne un dispositif de commande de pas des pales d'une éolienne, comportant une fusée de pale d'éolienne (14) à des fins de raccordement sur la pale d'éolienne raccordée de manière rotative à un élément de support (28). Un actionneur (32) est raccordé à la fusée (14) et par le biais d'un élément d'actionnement (38) à l'élément de support (28). L'actionneur (32) fonctionne pour faire tourner la fusée (14) autour d'un axe longitudinal de la fusée, pour effectuer ainsi un ajustement du pas de l'éolienne. De préférence, l'élément de support (28) comporte un arc denté (28), raccordé par des roues d'engrenage à un module d'entraînement d'ajustement de pas (18). L'invention concerne un dispositif d'ajustement de pas auxiliaire et/ou d'urgence, convenant par exemple à la mise en drapeau rapide de l'éolienne.

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