F - Mech Eng,Light,Heat,Weapons – 03 – B
Patent
F - Mech Eng,Light,Heat,Weapons
03
B
F03B 3/06 (2006.01) F03B 3/14 (2006.01) F03B 3/18 (2006.01) F03B 11/00 (2006.01) F03B 15/04 (2006.01)
Patent
CA 2705621
The invention relates to a hydraulic plant (I) that defines a path (4, 5, 6) for a forced water flow (E), and comprises at least one machine (1) of the turbine, pump or turbine-pump type, a member (8) provided with at least one deformable wall (81) and defining at least one closed volume (V8) with variable dimensions. The plant also includes means (9, 91) for supplying (Fg) the closed volume with a pressurised fluid. The member with a deformable wall (81) is mounted in a hydraulic duct (6) located downstream from a rotary portion (2) of the machine (1). The deformable wall defines, locally and downstream from the rotary portion (2), a modular section (S63) for the flow (E) passage in the hydraulic duct (6). According to the method of the invention, a pressurised fluid is injected (F9) into a closed volume having variable dimensions (V8) and defined by a member (8) provided in a hydraulic duct (6) located downstream from the rotary portion (2), in order to modulate the passage section (S63).
Cette installation hydraulique (I) définit un chemin (4, 5, 6) d'écoulement forcé (E) d'eau et comprend au moins une machine (1), de type turbine, pompe ou turbine-pompe, un organe (8) pourvu d'au moins une paroi déformable (81 ) et qui délimite au moins un volume fermé (V8) de taille variable. L'installation comprend également des moyens (9, 91 ) d'alimentation (F9) du volume fermé en fluide sous pression. L'organe à paroi déformable (81 ) est monté dans un conduit hydraulique (6) situé en aval d'un partie tournante (2) de la machine (1 ). La paroi déformable définit, localement et en aval de la partie tournante (2), une section modulable (S63) de passage de l'écoulement (E) dans le conduit hydraulique (6). Selon le procédé de l'invention, on injecte (F9) du fluide sous pression dans un volume fermé de taille variable (V8) délimité par un organe (8) disposé dans un conduit hydraulique (6) situé en aval de la partie tournante (2) de façon à moduler la section de passage (S63).
Couston Michel Henri
Sabourin Michel
Alstom Hydro France
Robic
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