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Title: Rotor bore and turbine rotor wheel/spacer heat exchange flow circuit

Abstract

In a turbine having closed-circuit steam-cooling passages about the rim of the rotor during steady-state operation, compressor discharge air is supplied to the rotor bore for passage radially outwardly into the wheel space cavities between the wheels and spacers. Communicating slots and channels in the spacers and wheels at circumferentially spaced positions enable egress of the compressor discharge air into the hot gas flow path. At turbine startup, cooling air flows through the closed-circuit steam passages to cool the outer rim of the rotor while compressor discharge air pre-warms the wheels and spacers. At steady-state, cooling steam is supplied in the closed-circuit steam-cooling passages and compressor discharge air is supplied through the bore and into the wheel space cavities to cool the rotor.

Inventors:
 [1];  [2];  [3];  [3];  [4];  [4];  [5];  [6]
+ Show Inventor Affiliations
  1. Selkirk, NY
  2. Saratoga Springs, NY
  3. Niskayuna, NY
  4. Clifton Park, NY
  5. Scotia, NY
  6. Schenectady, NY
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
OSTI Identifier:
874397
Patent Number(s):
6382903
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 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
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DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
rotor; bore; turbine; wheelspacer; heat; exchange; flow; circuit; closed-circuit; steam-cooling; passages; rim; steady-state; operation; compressor; discharge; air; supplied; passage; radially; outwardly; wheel; space; cavities; wheels; spacers; communicating; slots; channels; circumferentially; spaced; positions; enable; egress; hot; gas; path; startup; cooling; flows; steam; cool; outer; pre-warms; heat exchange; gas flow; air flow; hot gas; flow path; compressor discharge; cooling passages; flow circuit; discharge air; /415/416/

Citation Formats

Caruso, Philip M, Eldrid, Sacheverel Quentin, Ladhani, Azad A, DeMania, Alan Richard, Palmer, Gene David, Wilson, Ian David, Rathbun, Lisa Shirley, and Akin, Robert Craig. Rotor bore and turbine rotor wheel/spacer heat exchange flow circuit. United States: N. p., 2002. Web.
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Caruso, Philip M, Eldrid, Sacheverel Quentin, Ladhani, Azad A, DeMania, Alan Richard, Palmer, Gene David, Wilson, Ian David, Rathbun, Lisa Shirley, & Akin, Robert Craig. Rotor bore and turbine rotor wheel/spacer heat exchange flow circuit. United States.
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Caruso, Philip M, Eldrid, Sacheverel Quentin, Ladhani, Azad A, DeMania, Alan Richard, Palmer, Gene David, Wilson, Ian David, Rathbun, Lisa Shirley, and Akin, Robert Craig. Tue . "Rotor bore and turbine rotor wheel/spacer heat exchange flow circuit". United States. https://www.osti.gov/servlets/purl/874397.
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@article{osti_874397,
title = {Rotor bore and turbine rotor wheel/spacer heat exchange flow circuit},
author = {Caruso, Philip M and Eldrid, Sacheverel Quentin and Ladhani, Azad A and DeMania, Alan Richard and Palmer, Gene David and Wilson, Ian David and Rathbun, Lisa Shirley and Akin, Robert Craig},
abstractNote = {In a turbine having closed-circuit steam-cooling passages about the rim of the rotor during steady-state operation, compressor discharge air is supplied to the rotor bore for passage radially outwardly into the wheel space cavities between the wheels and spacers. Communicating slots and channels in the spacers and wheels at circumferentially spaced positions enable egress of the compressor discharge air into the hot gas flow path. At turbine startup, cooling air flows through the closed-circuit steam passages to cool the outer rim of the rotor while compressor discharge air pre-warms the wheels and spacers. At steady-state, cooling steam is supplied in the closed-circuit steam-cooling passages and compressor discharge air is supplied through the bore and into the wheel space cavities to cool the rotor.},
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}
}
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