Brush seal with porous upstream side-plate

Details Brush seal with porous upstream side-plate Brush seal with porous upstream side-plate

1994-08-16

1996-03-05

Cummings, Scott W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

4151735, 4151745, F16J 15447

Patent

active

054960452

ABSTRACT:
In a brush seal adapted for use in disturbed fluid flow conditions the upstream side-plate is formed of porous material or has foraminate region. In conventional seals disturbed flow can generate a flow adjacent the face of the seal bristle pack which tends to lift bristles away from the second sealing element. Seal leakage is consequently increased. The foraminate or porous upstream side-plate reduces disturbing forces on the bristles by modifying flow patterns to avoid forces which lift the bristles.

REFERENCES:
patent: 4060250 (1977-11-01), Davis et al.
patent: 4277072 (1981-07-01), Forch
patent: 5106104 (1992-04-01), Atkinson et al.
patent: 5308088 (1994-05-01), Atkinson et al.
patent: 5318309 (1994-06-01), Tseng et al.
patent: 5401036 (1995-03-01), Basu

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