F - Mech Eng,Light,Heat,Weapons – 03 – B
Patent
F - Mech Eng,Light,Heat,Weapons
03
B
138/33.06
F03B 3/04 (2006.01)
Patent
CA 1156537
FLAP-GATE FOR A TURBINE HAVING NO WICKET GATES ABSTRACT OF THE DISCLOSURE A flap-gate for controlling water flow through a passageway to a turbine runner in the passageway is disclosed mounted within a recess formed within a ceiling of the passageway. The flap-gate comprises a shaft rotatably mounted with the recess and a plate secured to the shaft. In a closed position, the plate extends from the shaft to sealing engagement with a floor of the passageway. The flap-gate is rotatably to an open position with the plate rotated away from the upstream end of the passageway to within the recess and with the plate forming part of the passageway ceiling. As arranged, the flap-gate is operable, upon failure of the mechanism for moving the gate between the open and closed positions, to be urged into a partial open position by the flow of water to permit start-up of the turbine. The plate is provided as having an arcuate surface presenting a hydraulic curvature when the flap-gate is in an open position to reduce the turbulence of flow across the gate.
381885
Allis-Chalmers Corporation
Swabey Ogilvy Renault
LandOfFree
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