Ovate band turbine stage

Details Ovate band turbine stage Ovate band turbine stage

2006-12-19

2009-08-25

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

C415S173700, C415S174500, C415S189000, C415S191000, C415S209200, C415S210100, C416S095000, C416S09700R

Reexamination Certificate

active

07578653

ABSTRACT:
A turbine stage includes a stator nozzle having a row of vanes mounted between inner and outer bands. The inner band terminates in an ovate ledge converging aft from the vanes with radially outer and inner convex surfaces joined at a convex apex. The ovate ledge reduces aerodynamic losses at the rotary seal with a row of following turbine rotor blades.

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Co-pending U.S. Appl. No. 11/642,002, filed Dec. 19, 2006.

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