Rotary kinetic fluid motors or pumps – With passage in blade – vane – shaft or rotary distributor...
Patent
1996-10-28
1998-05-12
Verdier, Christopher
Rotary kinetic fluid motors or pumps
With passage in blade, vane, shaft or rotary distributor...
4151737, 4151744, 4151745, 277 53, F01D 1102
Patent
active
057497010
ABSTRACT:
A seal assembly positioned between forward and aft rotor stages of a turbine separates a forward cavity and an aft cavity on each side thereof. The seal assembly includes a seal body connected to a platform portion of a stator nozzle located between the forward and aft rotor stages, wherein an inner seal cavity in flow communication with an insert in the stator nozzle is formed therebetween. A static seal member is arranged in sealing relationship with a rotary toothed member between the forward and aft cavities, with the static seal member being connected to the seal body. An intermediate member is positioned between the seal body and the static seal member to define a plenum therebetween in flow communication with the inner seal cavity, the intermediate member having a plurality of angled passages formed therein in which a first end thereof is in flow communication with the plenum and a second end thereof is in flow communication with the aft cavity. Accordingly, air entering the stator nozzle insert flows into the inner seal cavity and then into the plenum so that it exits through the angled passages into the aft cavity at an angle with respect to an axis of rotation of the aft rotor stage. In this way, such air will acquire a tangential velocity component in the direction of rotation of the aft rotor stage.
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Bauer Randall C.
Clarke Jonathon P.
Durgin George A.
McMahan Kevin W.
Steckle Charles E.
General Electric Company
Hess Andrew C.
Traynham Wayne O.
Verdier Christopher
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