Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1996-02-09
1998-09-29
Kwon, John T.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
4151742, 415229, 277 58, 277192, F04D 2908
Patent
active
058138307
ABSTRACT:
A carbon seal contaminant barrier system for a gas turbine engine including a lip seal for wiping the surface of a rotating seal runner, and a baffle spaced from the rotating seal runner to prevent the impingement of the contaminants on the lip seal. The lip seal and the baffle are spaced axially and cooperate to minimize the contaminants passed to a carbon sealing system. The circumferential carbon sealing ring having a plurality of passages therethrough for delivering pressurized gas adjacent the carbon sealing ring. The pressurized gas being utilized to reduce the drag on the lip seal and to reduce the migration of contaminants onto the carbon seal. The barrier system being utilized to reduce the contamination of the carbon seal and prevent the inherent leakages associated therewith and the potential contamination of the environmental system of the aircraft.
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Black Joseph D.
Bowman Mark E.
Smith Joseph C.
Allison Engine Company, Inc.
Kwon John T.
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