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Title: Gas turbine nozzle vane insert and methods of installation

Abstract

A pair of hollow elongated insert bodies are disposed in one or more of the nozzle vane cavities of a nozzle stage of a gas turbine. Each insert body has an outer wall portion with apertures for impingement-cooling of nozzle wall portions in registration with the outer wall portion. The insert bodies are installed into the cavity separately and spreaders flex the bodies toward and to engage standoffs against wall portions of the nozzle whereby the designed impingement gap between the outer wall portions of the insert bodies and the nozzle wall portions is achieved. The spreaders are secured to the inner wall portions of the insert bodies and the bodies are secured to one another and to the nozzle vane by welding or brazing.

Inventors:
 [1];  [2];  [3]
  1. Simpsonville, SC
  2. Clifton Park, NY
  3. West Chester, OH
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
OSTI Identifier:
874728
Patent Number(s):
6450759
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
gas; turbine; nozzle; vane; insert; methods; installation; pair; hollow; elongated; bodies; disposed; cavities; stage; outer; wall; portion; apertures; impingement-cooling; portions; registration; installed; cavity; separately; spreaders; flex; engage; standoffs; designed; impingement; gap; achieved; secured; inner; welding; brazing; gas turbine; wall portion; /415/416/

Citation Formats

Miller, William John, Predmore, Daniel Ross, and Placko, James Michael. Gas turbine nozzle vane insert and methods of installation. United States: N. p., 2002. Web.
Miller, William John, Predmore, Daniel Ross, & Placko, James Michael. Gas turbine nozzle vane insert and methods of installation. United States.
Miller, William John, Predmore, Daniel Ross, and Placko, James Michael. Tue . "Gas turbine nozzle vane insert and methods of installation". United States. https://www.osti.gov/servlets/purl/874728.
@article{osti_874728,
title = {Gas turbine nozzle vane insert and methods of installation},
author = {Miller, William John and Predmore, Daniel Ross and Placko, James Michael},
abstractNote = {A pair of hollow elongated insert bodies are disposed in one or more of the nozzle vane cavities of a nozzle stage of a gas turbine. Each insert body has an outer wall portion with apertures for impingement-cooling of nozzle wall portions in registration with the outer wall portion. The insert bodies are installed into the cavity separately and spreaders flex the bodies toward and to engage standoffs against wall portions of the nozzle whereby the designed impingement gap between the outer wall portions of the insert bodies and the nozzle wall portions is achieved. The spreaders are secured to the inner wall portions of the insert bodies and the bodies are secured to one another and to the nozzle vane by welding or brazing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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Works referenced in this record:

Development Requirements for an Advanced Gas Turbine System
journal, October 1995


Advances in Steam Path Technology
journal, April 1996