Seal ring means for a bladed rotor assembly

Details Seal ring means for a bladed rotor assembly Seal ring means for a bladed rotor assembly

F - Mech Eng,Light,Heat,Weapons

02

C

26/148, 170/72

F02C 7/00 (2006.01)

Patent

CA 1235071

-21- Abstract of the Disclosure Seal Ring Means For A Bladed Rotor Assembly Bladed rotor assemblies having removable blades are used with gas turbines to reduce costs and increase serviceability. Complex structures were used in the past to retain the blades within the rotor and seal the space therebetween. Complex tooling and methods were required for replacement of worn or damaged blades. Replacement of such blades by using the present invention reduces the complexity of the service required and reduces maintenance costs. The bladed rotor assembly of the present invention has a rotor with slots, an outward facing groove and an opening in the rotor. The blades are mounted in the slots and have an inward facing groove therein. The grooves form an annular T-slot. A ring segment and a spacer are rotatably trapped in the T-slot and a device prevents relative rotation between the ring segment and/or the spacer, and the rotor. The rotor assembly enables replacement of damaged blade on an individual basis by a simple disassembly-assembly technique which is inexpensive and requires low cost tooling. The device preventing rotation is removed from the rotor and the ring segment and the spacer are rotated to align the opening and the spacer. The spacer is slipped from the T-slot. The ring segment is aligned so that each damaged blade is replaced. After all the damaged blades are replaced, the ring segment is aligned with the opening, the spacer reinserted and the ring segment and spacer rotated to a position where prevention device is fixedly attached to the rotor.

517815

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