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:
-
- Simpsonville, SC
- Clifton Park, NY
- 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 F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS
- 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 = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
Works referenced in this record:
Development Requirements for an Advanced Gas Turbine System
journal, October 1995
- Bannister, R. L.; Cheruvu, N. S.; Little, D. A.
- Journal of Engineering for Gas Turbines and Power, Vol. 117, Issue 4
Advances in Steam Path Technology
journal, April 1996
- Cofer, J. I.
- Journal of Engineering for Gas Turbines and Power, Vol. 118, Issue 2