Ge Renewable Technologies

Laurent Bornard

Michel Sabourin

David Allan Scott

Louis Mathieu

Guillaume Boutet-Blais

Benoît Papillon

Carl-Anthony Beaubien

Sebastien Beaulieu

Sébastien Beaulieu

Bernard Di Maria

Benoit Papillon

Frédéric Debeissat

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

When traversed by a flow of water, a hydraulic machine rotating part rotates around an axis of rotation. It includes runners which are distributed around the axis of rotation and each extend between a leading edge and a trailing edge. Each runner can include a first part which defines its leading edge and a second part which is attached to the first part and defines the trailing edge at least in part. The second part can be elastically deformable or displaceable in a reversible manner with respect to the first part, under the action of the flow of water, the second part defining, when the machine operates, the direction of the flow of water downstream of the runner.

Rotating part of a hydraulic machine, hydraulic machine provided with such a rotating part and installation for converting energy comprising such a machine

Said hydraulic turbine includes a wheel which is made to rotate about a rotational axis (X) by a main water stream (F) going from a penstock to a suction tube along a flow path that passes through the wheel. Said turbine also includes first means that are placed outside the flow path of the main water stream (F) and enable the mixing of a secondary water stream (F), taken from the flow path and located upstream from the wheel, and an oxygen-containing gas (A). Said turbine also includes second means for injection, downstream from the wheel of the turbine, a water/gas mixture (F) produced in the first means.

Hydraulic turbine, and power conversion facility including such a turbine

Aerating system for the runner of a hydraulic turbine, the runner comprising a plurality of blades, such that inter-blade canals are configured between each pair of blades for the admission of air in the water flow circulating through the hydraulic turbine, such that the aerating system comprises at least one hydrofoil located in the inter-blade canal of the runner contacting the pair of blades configuring the inter-blade canal where the hydrofoil is located, such that the hydrofoil has a non-axis symmetrical profile, and such that at least one of the blades in contact with the hydrofoil comprises an aerating canal delivering air to the hydrofoil.

Aerating system for hydraulic turbine

A method is disclosed for manufacturing a rotating part which belongs to a hydraulic machine of an installation for converting hydraulic energy into electrical or mechanical energy. This rotating part includes blades distributed about an axis of rotation of the rotating part and extending from a leading edge to a trailing edge. This method can include manufacturing, in steel, a first part of each blade, which defines the leading edge thereof, manufacturing a second part of the blade in a material other than steel and attaching this to the first part of the blade so as to form a trailing edge.

Method for manufacturing a rotating part of a hydraulic machine, rotating part manufactured according to this method, hydraulic machine and energy conversion installation

Growing community of inventors

Saint-Ours, Canada

Laurent Bornard