Fluid reaction surfaces (i.e. – impellers) – Method of operation
Reexamination Certificate
2006-10-10
2006-10-10
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Method of operation
C416S09700R
Reexamination Certificate
active
07118337
ABSTRACT:
A gas turbine airfoil (10) includes a pressure sidewall (12) and a suction sidewall (14) joined along respective leading (16) and trailing edges (18) and extends radially outward from a root (20) to a tip (22). The airfoil also includes a trailing edge corner (24) comprising a metering hole (36) receiving a cooling fluid flow (26) from an interior fluid flow channel (e.g.,32) and discharging a metered flow (40). A dispersion cavity (42) receives the metered flow and discharges a dispersed flow (44). The dispersion cavity includes a cross sectional area (46) greater than a cross sectional area (48) of the metering hole. An open flow channel (52) receives the dispersed flow and conducts the dispersed flow to a periphery (54) of the airfoil, the open flow channel controlling mixing of the cooling fluid flow with a process gas (e.g.,28) flowing around an exterior (34) of the airfoil.
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Edgar Richard A.
Look Edward K.
Siemens Power Generation, Inc.
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