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Title: Apparatus and methods for impingement cooling of a side wall of a turbine nozzle segment

Abstract

A gas turbine nozzle segment has outer and inner bands and a vane therebetween. Each band includes a nozzle wall, a side wall, a cover and an impingement plate between the cover and the 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 impingement plate has a turned flange welded to the inturned flange. A backing plate overlies the turned flange and aligned apertures are formed through the backing plate and turned flange to direct and focus cooling flow onto the side wall of the nozzle segment.

Inventors:
 [1]
  1. (Schenectady, NY)
Publication Date:
Research Org.:
General Electric Company (Schenectady, NY)
OSTI Identifier:
874421
Patent Number(s):
US 6386825
Assignee:
General Electric Company (Schenectady, NY) NETL
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; methods; impingement; cooling; wall; turbine; nozzle; segment; gas; outer; inner; bands; vane; therebetween; band; cover; plate; defining; cavities; opposite; steam; supplied; cavity; flow; apertures; cool; inturned; flange; define; undercut; region; welded; overlies; aligned; formed; direct; focus; gas turbine; turbine nozzle; nozzle segment; /415/

Citation Formats

Burdgick, Steven Sebastian. Apparatus and methods for impingement cooling of a side wall of a turbine nozzle segment. United States: N. p., 2002. Web.
Burdgick, Steven Sebastian. Apparatus and methods for impingement cooling of a side wall of a turbine nozzle segment. United States.
Burdgick, Steven Sebastian. Tue . "Apparatus and methods for impingement cooling of a side wall of a turbine nozzle segment". United States. https://www.osti.gov/servlets/purl/874421.
@article{osti_874421,
title = {Apparatus and methods for impingement cooling of a side wall of a turbine nozzle segment},
author = {Burdgick, Steven Sebastian},
abstractNote = {A gas turbine nozzle segment has outer and inner bands and a vane therebetween. Each band includes a nozzle wall, a side wall, a cover and an impingement plate between the cover and the 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 impingement plate has a turned flange welded to the inturned flange. A backing plate overlies the turned flange and aligned apertures are formed through the backing plate and turned flange to direct and focus cooling flow onto the side wall of the nozzle segment.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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