Cooled turbine rim seal

Details Cooled turbine rim seal Cooled turbine rim seal

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 11/02 (2006.01) F01D 25/12 (2006.01) F02C 7/12 (2006.01) F02C 7/28 (2006.01)

Patent

CA 2728958

A rim seal assembly (70) includes an annular seal element (76) circumscribing an engine centerline or axis (8) and mounted on an annular platform (66) including a radially inwardly extending annular platform flange (68) disposed between and connected to forward and aft flanges (58, 59) at distal ends (61) of forward and aft annular elements (94, 96) respectively. Annular forward and aft outer rim cavities (78, 79) radially disposed between the forward and aft annular elements (94, 96) and the platform (66) are axially separated by the platform flange (68). Cooling slots (84) extend radially across axially facing forward and aft surfaces (88, 90) of the forward and aft flanges (58, 59). The platform flange (68) and the forward and aft flanges (58, 59) are bolted together. The annular seal element (76) may include seal teeth (64) in sealing relationship with an annular seal land (62) such as in a labyrinth seal (60). The rim seal assembly (70) may be incorporated in a low pressure turbine (26) use a compressor (16) as a source of cooling air (45).

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