Pressure balanced brush seal

Details Pressure balanced brush seal Pressure balanced brush seal

2007-08-14

2007-08-14

Patel, Vishal (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Brush seal

Reexamination Certificate

active

11237976

ABSTRACT:
A brush seal extends between static and rotary components. The brush seal includes a fence on the high pressure side, a bristle pack behind the fence, a bristle pack backing plate and a pressure plate. The backing plate includes a plurality of circumferentially and radially spaced arcuate slots arrayed in staggered relation about the brush seal segment. The pressure plate includes radially extending grooves opening toward the backing plate and intersecting each of the slots along that radius to afford a substantially uniform distribution of pressure on the downstream side of the bristle backing plate. In another embodiment, the grooves extend along the downstream faces of the bristle backing plate.

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Couture et al., U.S. Appl. No. 11/237,824, entitled: A Method of Manufacturing a Brush Seal for Sealing Between Stationary and Rotary Components, filed Sep. 29, 2005.

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