Seal assembly and rotary machine containing such seal

Details Seal assembly and rotary machine containing such seal Seal assembly and rotary machine containing such seal

1999-06-08

2000-10-31

Browne, Lynne H.

Seal for a joint or juncture

Seal between relatively movable parts

Brush seal

277347, 277420, 4151735, 4151745, F16J 15447, F01D 1102

Patent

active

061390194

ABSTRACT:
A seal assembly and a rotary machine, such as a steam turbine, containing such seal. A stator circumferentially surrounds a row of rotor blades. The stator includes an upstream tooth-seal region, a downstream brush-seal region, and an intervening fluid expansion chamber all radially near the blade tips. Debris in the fluid stream is broken down into smaller particles by the tooth-seal region, and the smaller particles are slowed down by the fluid expansion chamber such that minimal damage is caused to the downstream bristles in the brush seal region.

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patent: 6036437 (2000-03-01), Wolfe et al.
patent: 6045134 (2000-04-01), Turnquist et al.
U.S. application No. 09/159,196, filed Sep. 23, 1998, Bagepalli et al., "Hybrid Seal and Rotary Machine Containing Such Hybrid Seal".
U.S. application No. 09/131,486, filed Aug. 10, 1998, Turnquist et al., "Seal Assembly and Rotary Machine Containing Such Seal Assembly".
U.S. application No. 09/131,485, filed Aug. 10, 1998, Turnquist et al., "Brush Seal Segment".
Wolfe et al., "Brush Seals in Industrial Gas Turbines", 33rd AIAA/ASME/SAE/ASEE Joint Propusion Conference & Exhibit, Jul. 6-9, 1997, Seattle, WA.

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