Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1995-05-04
1998-06-23
Kwon, John T.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
277 74, F04D 2908
Patent
active
057696047
ABSTRACT:
A rotary seal assembly for preventing leakage of a fluid from a region of high pressure in a housing to a region of relatively lower pressure includes a first member mounted within the housing and having a central axis and an annular sealing face extending in a direction substantially radial the central axis, and a second member located in the housing and having an annular sealing face extending in a direction substantially radial to the central axis and opposing the first member sealing face. The second member sealing face has a first set of grooves and a second set of grooves arranged circularly thereabout, the second set of grooves being spaced radially inward of the first set of grooves. One of the first and second members is a rotor and the other is a stator. A stator holding assembly supports the stator within the housing, the rotor being rotatable about the central axis. The stator holding assembly secures the stator against rotation and urges the stator sealing face toward the rotor sealing face. Pressurized fluid flows between the sealing faces and within the first and second set of grooves, thereby forming a gas film seal between the sealing faces.
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Cunningham Matthew D.
Gardner James F.
EG&G Sealol Inc.
Kwon John T.
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