Pyrometer mount for a closed-circuit thermal medium cooled gas turbine

Jones, Raymond Joseph; Kirkpatrick, Francis Lawrence; Burns, James Lee; Fulton, John Robert

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Title: Pyrometer mount for a closed-circuit thermal medium cooled gas turbine

Abstract

A steam-cooled second-stage nozzle segment has an outer band and an outer cover defining a plenum therebetween for receiving cooling steam for flow through the nozzles to the inner band and cover therefor and return flow through the nozzles. To measure the temperature of the buckets of the stage forwardly of the nozzle stage, a pyrometer boss is electron beam-welded in an opening through the outer band and TIG-welded to the outer cover plate. By machining a hole through the boss and seating a linearly extending tube in the boss, a line of sight between a pyrometer mounted on the turbine frame and the buckets is provided whereby the temperature of the buckets can be ascertained. The welding of the boss to the outer band and outer cover enables steam flow through the plenum without leakage, while providing a line of sight through the outer cover and outer band to measure bucket temperature.

Inventors:

Jones, Raymond Joseph ^[1]; Kirkpatrick, Francis Lawrence ^[2]; Burns, James Lee ^[3]; Fulton, John Robert ^[4]

Duanesburg, NY
late of Galway, NY
Schenectady, NY
Clifton Park, NY

Issue Date:: Tue Jan 01 00:00:00 EST 2002

Research Org.:: General Electric Co., Schenectady, NY (United States)

OSTI Identifier:: 874620

Patent Number(s):: 6425241

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

Show more

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D17/085 - {to temperature}
F01D21/003 - {Arrangements for testing or measuring
F01D9/02 - Nozzles

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS
F02C7/16 - characterised by cooling medium

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
F05D2260/2322 - steam
F05D2260/80 - Diagnostics

Show less

DOE Contract Number:: FC21-95MC31176

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: pyrometer; mount; closed-circuit; thermal; medium; cooled; gas; turbine; steam-cooled; second-stage; nozzle; segment; outer; band; cover; defining; plenum; therebetween; receiving; cooling; steam; flow; nozzles; inner; return; measure; temperature; buckets; stage; forwardly; boss; electron; beam-welded; tig-welded; plate; machining; hole; seating; linearly; extending; tube; line; sight; mounted; frame; provided; ascertained; welding; enables; leakage; providing; bucket; electron beam; gas turbine; steam flow; nozzle segment; /60/

Citation Formats


                    Jones, Raymond Joseph, Kirkpatrick, Francis Lawrence, Burns, James Lee, and Fulton, John Robert. Pyrometer mount for a closed-circuit thermal medium cooled gas turbine.  United States: N. p., 2002. 
        Web.

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                    Jones, Raymond Joseph, Kirkpatrick, Francis Lawrence, Burns, James Lee, & Fulton, John Robert. Pyrometer mount for a closed-circuit thermal medium cooled gas turbine.  United States.

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                    Jones, Raymond Joseph, Kirkpatrick, Francis Lawrence, Burns, James Lee, and Fulton, John Robert. Tue .  
        "Pyrometer mount for a closed-circuit thermal medium cooled gas turbine".  United States.  https://www.osti.gov/servlets/purl/874620.

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@article{osti_874620,

  title        = {Pyrometer mount for a closed-circuit thermal medium cooled gas turbine},

  author       = {Jones, Raymond Joseph and Kirkpatrick, Francis Lawrence and Burns, James Lee and Fulton, John Robert},

  abstractNote = {A steam-cooled second-stage nozzle segment has an outer band and an outer cover defining a plenum therebetween for receiving cooling steam for flow through the nozzles to the inner band and cover therefor and return flow through the nozzles. To measure the temperature of the buckets of the stage forwardly of the nozzle stage, a pyrometer boss is electron beam-welded in an opening through the outer band and TIG-welded to the outer cover plate. By machining a hole through the boss and seating a linearly extending tube in the boss, a line of sight between a pyrometer mounted on the turbine frame and the buckets is provided whereby the temperature of the buckets can be ascertained. The welding of the boss to the outer band and outer cover enables steam flow through the plenum without leakage, while providing a line of sight through the outer cover and outer band to measure bucket temperature.},

  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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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
https://doi.org/10.1115/1.2815458

Advances in Steam Path Technology
journal, April 1996

Cofer, J. I.
Journal of Engineering for Gas Turbines and Power, Vol. 118, Issue 2
https://doi.org/10.1115/1.2816595

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Title: Pyrometer mount for a closed-circuit thermal medium cooled gas turbine

Abstract

Citation Formats

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

Advances in Steam Path Technology journal, April 1996

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

Advances in Steam Path Technology
journal, April 1996