Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-05-24
2008-10-07
Le, Dang D (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C277S422000, C277S579000
Reexamination Certificate
active
07432620
ABSTRACT:
A seal assembly is provided to prevent leakage of cooling fluid from a generator housing. A bracket26includes an inlet connectable to power plant piping for receiving a supply of sealing fluid. The inlet is in communication with a bracket passageway32for admitting the sealing fluid in a radially inner section of the bracket. A sealing cartridge28is mountable in an annulus defined by the bracket. The sealing cartridge includes at least one cartridge passageway44in communication with the bracket passageway for admitting the supply of sealing fluid and passing the supply of sealing fluid to establish a sealing boundary about the rotor shaft. At least one of the bracket or the sealing cartridge includes a first sealing fluid-distribution channel30extending along a radial direction for providing fluid communication between the bracket passageway and the at least one passageway in the sealing cartridge.
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P.C. Stein, Shaft Seals, “Circumferential Seals for Use as Oil Seals”, presented Apr. 18, 1978, 33rd Annual Meeting of ASLE, Dearborn Michigan.
Emery Joseph Marcus
Farley Samuel R.
Freal David M.
Le Dang D
Siemens Power Generation, Inc.
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