Cooling system for a gas turbine using a cylindrical insert having V-shaped notch weirs

Grondahl, Clayton M; Germain, Malcolm R

Title: Cooling system for a gas turbine using a cylindrical insert having V-shaped notch weirs

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Abstract

An improved cooling system for a gas turbine is disclosed. A plurality of V-shaped notch weirs are utilized to meter a coolant liquid from a pool of coolant into a plurality of platform and airfoil coolant channels formed in the buckets of the turbine. The V-shaped notch weirs are formed in a separately machined cylindrical insert and serve to desensitize the flow of coolant into the individual platform and airfoil coolant channels to design tolerances and non-uniform flow distribution.

Inventors:

Grondahl, Clayton M ^[1]; Germain, Malcolm R ^[2]

Clifton Park, NY
Ballston Lake, NY

Issue Date:: 1981-01-01

Research Org.:: General Electric Co., Boston, MA (United States)

OSTI Identifier:: 863766

Patent Number(s):: 4244676

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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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/185 - {Liquid cooling

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
F05D2250/231 - cylindrical

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T50/60 - Efficient propulsion technologies

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
F05D2240/81 - Cooled platforms

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/20 - Specially-shaped blade tips to seal space between tips and stator {

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
F05D2250/182 - crenellated, notched

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DOE Contract Number:: EX-76-C-01-1806

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: cooling; gas; turbine; cylindrical; insert; v-shaped; notch; weirs; improved; disclosed; plurality; utilized; meter; coolant; liquid; pool; platform; airfoil; channels; formed; buckets; separately; machined; serve; desensitize; flow; individual; design; tolerances; non-uniform; distribution; cylindrical insert; coolant channel; channels formed; gas turbine; coolant liquid; v-shaped notch; notch weirs; flow distribution; uniform flow; coolant channels; improved cooling; /416/

Citation Formats


                    Grondahl, Clayton M, and Germain, Malcolm R. Cooling system for a gas turbine using a cylindrical insert having V-shaped notch weirs.  United States: N. p., 1981. 
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                    Grondahl, Clayton M, & Germain, Malcolm R. Cooling system for a gas turbine using a cylindrical insert having V-shaped notch weirs.  United States.

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                    Grondahl, Clayton M, and Germain, Malcolm R. Thu .  
        "Cooling system for a gas turbine using a cylindrical insert having V-shaped notch weirs".  United States.  https://www.osti.gov/servlets/purl/863766.

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@article{osti_863766,

  title        = {Cooling system for a gas turbine using a cylindrical insert having V-shaped notch weirs},

  author       = {Grondahl, Clayton M and Germain, Malcolm R},

  abstractNote = {An improved cooling system for a gas turbine is disclosed. A plurality of V-shaped notch weirs are utilized to meter a coolant liquid from a pool of coolant into a plurality of platform and airfoil coolant channels formed in the buckets of the turbine. The V-shaped notch weirs are formed in a separately machined cylindrical insert and serve to desensitize the flow of coolant into the individual platform and airfoil coolant channels to design tolerances and non-uniform flow distribution.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1981},

  month        = {1}

}

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