Cooling circuit for steam and air-cooled turbine nozzle stage
Abstract
The turbine vane segment includes inner and outer walls with a vane extending therebetween. The vane includes leading and trailing edge cavities and intermediate cavities. An impingement plate is spaced from the outer wall to impingement-cool the outer wall. Post-impingement cooling air flows through holes in the outer wall to form a thin air-cooling film along the outer wall. Cooling air is supplied an insert sleeve with openings in the leading edge cavity for impingement-cooling the leading edge. Holes through the leading edge afford thin-film cooling about the leading edge. Cooling air is provided the trailing edge cavity and passes through holes in the side walls of the vane for thin-film cooling of the trailing edge. Steam flows through a pair of intermediate cavities for impingement-cooling of the side walls. Post-impingement steam flows to the inner wall for impingement-cooling of the inner wall and returns the post-impingement cooling steam through inserts in other intermediate cavities for impingement-cooling the side walls of the vane.
- Inventors:
-
- Clifton Park, NY
- Guilderland, NY
- Issue Date:
- Research Org.:
- General Electric Co., Schenectady, NY (United States)
- OSTI Identifier:
- 874517
- Patent Number(s):
- 6406254
- 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
- DOE Contract Number:
- FC21-95MC31176
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- cooling; circuit; steam; air-cooled; turbine; nozzle; stage; vane; segment; inner; outer; walls; extending; therebetween; leading; trailing; edge; cavities; intermediate; impingement; plate; spaced; wall; impingement-cool; post-impingement; air; flows; holes; form; air-cooling; film; supplied; insert; sleeve; openings; cavity; impingement-cooling; afford; thin-film; provided; passes; pair; returns; inserts; air flow; steam flow; turbine vane; /415/
Citation Formats
Itzel, Gary Michael, and Yu, Yufeng. Cooling circuit for steam and air-cooled turbine nozzle stage. United States: N. p., 2002.
Web.
Itzel, Gary Michael, & Yu, Yufeng. Cooling circuit for steam and air-cooled turbine nozzle stage. United States.
Itzel, Gary Michael, and Yu, Yufeng. Tue .
"Cooling circuit for steam and air-cooled turbine nozzle stage". United States. https://www.osti.gov/servlets/purl/874517.
@article{osti_874517,
title = {Cooling circuit for steam and air-cooled turbine nozzle stage},
author = {Itzel, Gary Michael and Yu, Yufeng},
abstractNote = {The turbine vane segment includes inner and outer walls with a vane extending therebetween. The vane includes leading and trailing edge cavities and intermediate cavities. An impingement plate is spaced from the outer wall to impingement-cool the outer wall. Post-impingement cooling air flows through holes in the outer wall to form a thin air-cooling film along the outer wall. Cooling air is supplied an insert sleeve with openings in the leading edge cavity for impingement-cooling the leading edge. Holes through the leading edge afford thin-film cooling about the leading edge. Cooling air is provided the trailing edge cavity and passes through holes in the side walls of the vane for thin-film cooling of the trailing edge. Steam flows through a pair of intermediate cavities for impingement-cooling of the side walls. Post-impingement steam flows to the inner wall for impingement-cooling of the inner wall and returns the post-impingement cooling steam through inserts in other intermediate cavities for impingement-cooling the side walls of the vane.},
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