Bucket cover geometry for brush seal applications

Details Bucket cover geometry for brush seal applications Bucket cover geometry for brush seal applications

1998-04-03

2000-03-14

Lopez, F. Daniel

Rotary kinetic fluid motors or pumps

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

Between blade edge and static part

4151735, 4151736, 4151742, 4151745, 415230, 415231, 416189, 416191, F01D 1112

Patent

active

060364378

ABSTRACT:
Bucket covers for the buckets of a rotating component of a turbomachine are in radial opposition to a stationary component containing a circumferentially extending brush seal having bristles extending into engagement with sealing surfaces of the covers as the covers rotate by the bristles. The leading edges of the covers for the buckets in the plane of rotation and in the plane containing the brush seal have ramps or rounded surfaces which minimize the wear on the bristles and degradation of the performance of the seal as the bucket covers are rotated past the brush seal.

REFERENCES:
patent: 5026252 (1991-06-01), Hoffelner
patent: 5181728 (1993-01-01), Stec
patent: 5261785 (1993-11-01), Williams
"Integrity Testing of Brush Seal in Shroud Ring of T-700 Engine" Hendricks et al.; ASME Conference May, 1993.

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