Patents Assigned to ALSTOM Power Hydro
  • Patent number: 6655919
    Abstract: The invention concerns a method which consists in: pre-positioning, in a housing (7) of a flange (5), a bucket (2) supported by part (23) of its outer surface (23) against an edge (71) of the housing (7) providing a space (E′) between the convex surface (23B) of the outer radial part (2B) of the bucket (2) and said edge (71); producing an articulated linkage (15) of the bucket (2) on the rim (1) and/or the flange (5) on the inside (2A) of the bucket (2); exerting on the outer radial part (2B) of the bucket (2) a first calibrated force to bring it closer to the edge (71); determining the distance (e) between said outer radial part (2B) and said edge (71) under said force; slackening said force; arranging, between said outer radial part (2B) and said edge (71), a wedge (53) having a thickness substantially equal to said distance (e); and exerting on the outer radial part (2B) of the bucket a second force (F2) to bringing it closer to the edge and maintaining said second force (F2) which has an intensity n
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: December 2, 2003
    Assignee: Alstom Power Hydro
    Inventors: Georges Rossi, Louis Finet, Francis Freynet, Bernard Michel
  • Patent number: 6443697
    Abstract: The invention concerns a Pelton turbine wheel comprising a rim (1) and several buckets (2) distributed at the rim periphery, characterised in that it comprises at least a ring-shaped flange (5, 6) integral with the rim and provided with housings (7) for receiving the buckets. The flange is capable of absorbing at least part of the efforts transmitted by the buckets (2) to the rim (1) and forms a peripheral strip (9) at external radial zones of the housings (7). The transmission of the efforts from the buckets (2) to the wheel rim (2) is carried out without generating too considerable a concentration zone of mechanical stresses.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: September 3, 2002
    Assignee: ALSTOM Power Hydro
    Inventors: Georges Rossi, Louis Finet, Jean-Marie Roman