Labyrinth compression seal and turbine incorporating the same

Details Labyrinth compression seal and turbine incorporating the same Labyrinth compression seal and turbine incorporating the same

2007-09-04

2011-11-29

Wiehe, Nathaniel (Department: 3745)

Rotary kinetic fluid motors or pumps

Including means for handling working fluid leakage

Leakage through seal between runner or shaft and static part

C415S174500

Reexamination Certificate

active

08066475

ABSTRACT:
A uniquely configured rotating seal tooth is used in conjunction with commonly used labyrinth-type seals that provide a seal between a rotating component and a stationary component. The uniquely configured rotating seal tooth produces a compression mechanism to counter leakage flow through the labyrinth of seal teeth, thereby lessening the pressure gradient that drives leakage and reversing the direction of some of the leakage flow.

REFERENCES:
patent: 3945758 (1976-03-01), Lee
patent: 4113406 (1978-09-01), Lee et al.
patent: 4273510 (1981-06-01), Ambrosch et al.
patent: 4420161 (1983-12-01), Miller
patent: 5088889 (1992-02-01), Wolff
patent: 6588764 (2003-07-01), Fuller
patent: 7004475 (2006-02-01), McHale et al.

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