Turbine interstage sealing ring

Details Turbine interstage sealing ring Turbine interstage sealing ring

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 11/00 (2006.01) F01D 5/08 (2006.01)

Patent

CA 2363669

A unitary interstage sealing ring (112) for bridging and sealing the space between adjacent turbine rotor disks (52, 60) in a multi-stage turbine (50). The sealing ring (112) serves to confine relatively cool air conveyed to the turbine (50) so the cooling air flows into the turbine blades (58, 98) for maintaining the blades at a desired temperature. The sealing ring (112) includes a disk-shaped body member (114) that includes a pair of axially-- spaced, radially-extending arms (118, 122) that terminate in respective seal teeth (126, 128) for engagement with a stationary annular sealing member (130). Each of the radial arms (118, 122) includes an outwardly-extending axial arm (120, 124) that terminates in a disk engagement member (148, 158) for sealing engagement with the face of an adjacent turbine disk (52, 60) to confine cooling air within the space (144) between the adjacent turbine disks (52, 60). Additionally, one of the disk engagement members (148, 158) includes at least one projection (152, 236) that contacts a respective rotor disk (52, 60) to limit relative rotation between the sealing ring (112, 230) and the turbine (50).

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