F - Mech Eng,Light,Heat,Weapons – 03 – B
Patent
F - Mech Eng,Light,Heat,Weapons
03
B
F03B 11/04 (2006.01) F03B 1/00 (2006.01) F03B 1/04 (2006.01) F03B 3/02 (2006.01) F03B 3/06 (2006.01) F03B 3/12 (2006.01) F03B 11/00 (2006.01) F04D 29/66 (2006.01)
Patent
CA 2694073
The invention relates to a hydraulic machine through which a main flow (F) of water passes, including at least one turbine blade profile (1) having an upstream end (8) and a downstream end (10), with at least a turbulent zone, reduced-pressure zone or cavitation zone (14) being formed close to said downstream end. The machine also includes means for injecting a flow (E1, E2) drawn from the main flow into the aforementioned zone (14). The injection means include a channel (16) for drawing said flow (E1, E2) from the main flow (E) and discharging same at the downstream end (10) substantially in the direction of the main flow (E).
Cette machine traversée par un écoulement (E) principal d'eau comprend au moins un profil d'aubage (1 ) d'une turbine, présentant une extrémité amont (8) et une extrémité aval (10), au voisinage de laquelle se forme au moins une zone tourbillonnaire ou une zone de pression réduite ou une zone de cavitation (14), la machine comprenant des moyens d'injection d'un écoulement prélevé (E1, E2) dudit écoulement principal dans ladite zone (14). Les moyens d'injection comprenant une conduite (16) prélevant l'écoulement (E1, E2) de l'écoulement principal (E) et le faisant déboucher dans l'extrémité aval (10) sensiblement selon la direction de l'écoulement principal (E).
Mazzouji Farid
Traversaz Monique
Alstom Hydro France
Robic
LandOfFree
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