Alstom Renewable Technologies

Alstom Hydro France

Yves Bouvet

Jean-Francois Bertea

Georges Rossi

Jean-François Bertea

Fabrice Tassy

Jean Francois Bertea

Jean François Bertea

The present invention relates to a Francis runner for a hydraulic machine that comprises a belt with a rotational symmetry about a central axis of the runner, a ceiling with a rotational symmetry about the axis, and a plurality of blades () extending between the ceiling and the belt. The runner also includes at least two elements () partially defining at least the belt and/or the ceiling while at least one edge () of a blade () is inserted between the two elements defining the belt and/or the ceiling.

Francis-type runner for a hydraulic machine, hydraulic machine including such a runner, and method for assembling such a runner

A hydraulic machine including an impeller which rotates with respect to a fixed structure and about an axis of rotation by a forced flow of water passing through it and at least one device for limiting water leaks is positioned between the impeller and the fixed structure so as to define an operating clearance between the impeller and the fixed structure and including at least one member that can be deformed or moved, while the impeller is rotating and being fed with water, in a redial direction with respect to the axis of rotation of the impeller.

Hydraulic machine, an energy conversion installation including such a machine, and a method of adjusting such a machine

This hydraulic machine () has a wheel () mounted to move in rotation relative to a stationary structure () and about a stationary axis of rotation (X), the wheel () being designed to pass a forced flow (E) of water therethrough. A hydrostatic bearing (), provided between firstly an element () constrained to rotate with the wheel () and, secondly a portion () of the stationary structure (), is disposed between a first zone (Z) of the machine, which zone is in fluid communication with the forced flow (E) and in which zone, during operation, a pressure prevails that is similar to the pressure of the forced flow, and a second zone (Z) of the machine that is isolated from the forced flow by said bearing.

Hydraulic machine, an energy conversion installation including such a machine, and the use of a hydrostatic labyrinth-bearing in such a machine

The invention relates to a Pelton turbine that comprises a plurality of sub-assemblies arranged about the rotation axis of the wheel and each including a bucket () and an anchoring leg (). At least one blocking pin () is provided in a direction (X) parallel to the rotation axis (X) of the wheel between two adjacent anchoring legs (), wherein said pin is inserted into two housings () respectively formed in the two anchoring legs (). According to the method of the invention, the blocking pin () is placed by inserting the same into the two housings () of two adjacent anchoring legs (). The pins are placed into the housings with a clearance, thereby allowing the relative sliding of the anchoring legs (') before blocking them with the pins ().

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La Terrasse, France

Yves Bouvet