Rotating shaft confinement system

Details Rotating shaft confinement system Rotating shaft confinement system

F - Mech Eng,Light,Heat,Weapons

16

C

F16C 27/00 (2006.01) F03B 3/12 (2006.01) F03B 11/04 (2006.01)

Patent

CA 2386771

In a double-ended Francis turbine, shaft whip at critical speed is alleviated by pitching tappets in the housing, around the rotor. The tappets are adjusted to lie closer to the rotor than the (labyrinth) seal grooves. The tappets are of polythene, and are around twenty in number. The tappets are adjustable from outside the housing, and adjustment may be done with the turbine running.

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