Seal assembly for turbine, bucket/turbine including same,...

Details Seal assembly for turbine, bucket/turbine including same,... Seal assembly for turbine, bucket/turbine including same,...

2006-02-21

2006-02-21

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

C415S173500, C415S173600

Reexamination Certificate

active

07001145

ABSTRACT:
A rotary machine includes a rotatable rotor, buckets radially mounted on and spaced apart about the rotor, a stationary stator/casing disposed about and radially outward from the rotor defining an annular gap between the casing and tips of the buckets, and an abradable seal member provided to the bucket tip portions and disposed within the annular gap such that during differential growth of the rotor and buckets relative to the casing the seal member abrades in response to contact with a base seal member provided to the stator casing. Thereby, clearance between the stator casing and bucket tips is minimized between the moving bucket tips with the stator casing.

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U.S. Ser. No. 10/284,259, filed Dec. 2002, unknown.

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