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 2694071
The invention relates to a machine through which a main flow (E) of water passes, including a turbine wheel (4), with at least a turbulent zone, reduced-pressure zone or cavitation zone (8, 10, 33) being formed close to said wheel. The wheel includes blades (6) disposed between a ceiling (28) and a belt (30). The machine also includes means for injecting a flow (E2) drawn from the main flow into the aforementioned zone (8, 10, 33) such as to alter the main flow (E) locally or increase the pressure in said zone (8, 10, 33). Said injection means inject the drawn flow (E2) from the ceiling (28) or from the belt (30) through holes (31, 32) provided in the ceiling (28) or belt (30).
Cette machine traversée par un écoulement (E) principal d'eau comprend une roue (4) d'une turbine au voisinage de laquelle se forme au moins une zone tourbillonnaire ou une zone de pression réduite ou une zone de cavitation (8, 10, 33), la roue comprenant des aubes (6) disposées entre un plafond (28) et une ceinture (30), la machine comprenant des moyens d'injection d'un écoulement prélevé (E2) dudit écoulement principal dans ladite zone (8, 10, 33) de sorte à modifier localement J'écoulement principal (E) ou augmenter la pression dans cette zone (8, Lesdits moyens injectant l'écoulement prélevé (E2) depuis le plafond (28) ou depuis la ceinture (30) au moyen d'ouvertures (31, 32) pratiquées dans ledit plafond (28) ou dans ladite ceinture (30).
Mazzouji Farid
Traversaz Monique
Alstom Hydro France
Robic
LandOfFree
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