Ge Renewable Technologies

David Allan Scott

Laurent Bornard

Louis Mathieu

Benoît Papillon

Carl-Anthony Beaubien

Guillaume Boutet-Blais

Bernard Di Maria

Benoit Papillon

Seyla Tan

A hydraulic turbine includes a runner having a shaft, a runner crown, and a runner tip. Blades are fixed to the runner crown and are rotatable around an axis of rotation in operation of the hydraulic turbine, each blade including a leading edge and a trailing edge. A first chamber is located between the runner crown and a stationary head cover, or within head cover. A second chamber is located in the runner tip. A passage for water is defined between the first chamber and the second chamber. The runner crown has an upper portion and a lower portion, the upper portion having a larger diameter than the lower portion such that a channel is defined between the upper and lower portions. The channel has a circular shape and a circular symmetry around the axis of rotation and leads to a discharge region below the runner.

Hydroturbine runner crown with balancing slots

The invention concerns an inter-blade profile () for a turbine runner blade, said inter-blade profile () comprising a profile (), and a plug (), forming a basis of the profile () and intended for being inserted into a corresponding hole () made in a blade.

Pre-formed plug with inter-blade profiles for hydraulic turbines

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CA

David Allan Scott