Apparatus and methods for impingement cooling of an undercut region adjacent a side wall of a turbine nozzle segment

Patent · Mon Jan 01 04:00:00 EST 2001

OSTI ID:874170

Burdgick, Steven Sebastian ^[1]; Itzel, Gary Michael ^[2]

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1. Schenectady, NY
2. Simpsonville, SC

A gas turbine nozzle segment has outer and inner bands. Each band includes a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band and inturned flange define with the nozzle wall an undercut region. The inturned flange has a plurality of apertures for directing cooling steam to cool the side wall between adjacent nozzle segments.

• Research Organization: General Electric Company (Schenectady, NY)
• DOE Contract Number: FC21-95MC31176
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 6331096
• OSTI ID: 874170
• Country of Publication: United States
• Language: English

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