Split knife edge seals

Details Split knife edge seals Split knife edge seals

2006-06-22

2008-12-30

Verdier, Christopher (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Multiple axially spaced working members

C415S174400, C415S174500, C415S230000, C277S412000, C277S413000, C277S416000, C277S421000, C029S888020, C029S888021, C029S889200

Reexamination Certificate

active

07470113

ABSTRACT:
A compressor for a turbine engine includes multiple compressor disks having rotor blades mounted about the circumference of each of the disks. A plurality of stator vanes extend between the rotor blades of axially adjacent disks. A knife edge seal segment is supported by each disk backbone extending from the disks and contacts the stator vanes to restrict leakage of compressed air from between the stator vane and the compressor rotor to limit the recirculation of air. Retaining flanges extend from each disk rim to retain the knife edge seal segments to the disk backbone and spacer bridges integral to the knife edge seal segments prevent axial movement of the knife edge seal segments. A plurality of lock assemblies are spaced about the circumference of the disk backbone to prevent circumferential shifting and rotating of the knife edge seal segments during operation.

REFERENCES:
patent: 1792288 (1931-02-01), Dempster
patent: 3067490 (1962-12-01), Luthy et al.
patent: 3295825 (1967-01-01), Hall, Jr.
patent: 3656864 (1972-04-01), Wagle
patent: 3701536 (1972-10-01), Matthews et al.
patent: 3846899 (1974-11-01), Gross
patent: 4088422 (1978-05-01), Martin

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