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Title:
VENTURI FOR USE IN SWIRL CUP PACKAGE OF GAS TURBINE COMBUSTOR HAVING WATER INJECTED THEREIN
Document Type and Number:
Japanese Patent JP2000320835
Kind Code:
A
Abstract:

To obtain a venturi improved to be protected against axial stresses imposed on the venturi, which stresses are caused by a temperature gradient generated by water injection into a combustor.

A combustion apparatus for a gas-turbine engine includes a combustor structure having at least one combustion chamber 14, a dual cone fuel nozzle 24 for injecting both fuel and water to the combustion chamber 14 and a swirl cup package upstream of and adjacent to this combustion chamber 14. The swirl cup package 22 further includes a swirler 28 and a venturi 34 extending in the axial direction between the fuel nozzle 24 and the combustion chamber 14 for mixing the fuel and water with air. The venturi 34 is configured to have a thickness (t) from an upstream end 44 to a downstream end 46, which thickness provides a heat transfer conduction path that reduces axial stresses imposed on the venturi 34 when water impinges on an upstream portion of the venturi 34.


Inventors:
GILBERT FARMER
GROESCHEN JAMES ANTHONY
RETTIG MARK GERARD
Application Number:
JP2000096071A
Publication Date:
November 24, 2000
Filing Date:
March 31, 2000
Export Citation:
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Assignee:
GEN ELECTRIC
International Classes:
F23R3/02; F02C3/30; F23D14/48; F23D14/64; F23L7/00; F23R3/00; F23R3/14; (IPC1-7): F23R3/02; F02C3/30; F23D14/48; F23D14/64; F23R3/00
Domestic Patent References:
JPH10185193A1998-07-14
JPS4968105A1974-07-02
JPS5575535A1980-06-06
JPH04227410A1992-08-17
JPH09145058A1997-06-06
JPS5935724A1984-02-27
JPS5538494A1980-03-17
Foreign References:
US5220786A1993-06-22
US5274995A1994-01-04
Attorney, Agent or Firm:
Kenichi Matsumoto



 
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