Gas turbine nozzle vane insert and methods of installation

Miller, William John; Predmore, Daniel Ross; Placko, James Michael

Title: 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:

Miller, William John ^[1]; Predmore, Daniel Ross ^[2]; Placko, James Michael ^[3]

Simpsonville, SC
Clifton Park, NY
West Chester, OH

Issue Date:: 2002-01-01

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 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

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

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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
F05D2260/205 - Cooling fluid recirculation, i.e. after cooling one or more components is the cooling fluid recovered and used elsewhere for other purposes

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/49323 - Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles

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
F05D2260/30 - Retaining components in desired mutual position

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/189 - {the insert having a tubular cross-section, e.g. airfoil shape}

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
F05D2260/201 - by impingement of a fluid
F05D2240/81 - Cooled platforms

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/187 - {Convection cooling}

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS
F02C7/18 - the medium being gaseous, e.g. air {

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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.

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                    Miller, William John, Predmore, Daniel Ross, & Placko, James Michael. Gas turbine nozzle vane insert and methods of installation.  United States.

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                    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.

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@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         = {2002},

  month        = {1}

}

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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: Gas turbine nozzle vane insert and methods of installation

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