Gas turbine blade with intra-span snubber

Merrill, Gary B.; Mayer, Clinton

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
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B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
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C05 - fertilisers
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C08 - organic macromolecular compounds
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C10 - petroleum, gas or coke industries
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C14 - skins
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C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
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D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
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E01 - construction of roads, railways, or bridges
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E06 - doors, windows, shutters, or roller blinds in general
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F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
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F17 - storing or distributing gases or liquids
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F22 - steam generation
F23 - combustion apparatus
F24 - heating
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F26 - drying
F27 - furnaces
F28 - heat exchange in general
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F42 - ammunition
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G - physics
G01 - measuring
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G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
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G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
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H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
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Title: Gas turbine blade with intra-span snubber

Abstract

A gas turbine blade (10) including a hollow mid-span snubber (16). The snubber is affixed to the airfoil portion (14) of the blade by a fastener (20) passing through an opening (24) cast into the surface (22) of the blade. The opening is defined during an investment casting process by a ceramic pedestal (38) which is positioned between a ceramic core (32) and a surrounding ceramic casting shell (48). The pedestal provides mechanical support for the ceramic core during both wax and molten metal injection steps of the investment casting process.

Inventors:: Merrill, Gary B.; Mayer, Clinton

Issue Date:: Tue Jul 29 00:00:00 EDT 2014

Research Org.:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1149933

Patent Number(s):: 8790082

Application Number:: 12/848,456

Assignee:: Siemens Energy, Inc. (Orlando, FL)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

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B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING
B22C9/04 - Use of lost patterns
B22C9/10 - Cores

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/147 - {Construction, i.e. structural features, e.g. of weight-saving hollow blades
F01D5/16 - for counteracting blade vibration
F01D5/187 - {Convection 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
F05D2230/21 - by casting
F05D2230/236 - Diffusion bonding
F05D2230/237 - Brazing
F05D2300/21 - Oxide ceramics

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/49336 - Blade making

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DOE Contract Number:: FC26-05NT42644

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Merrill, Gary B., and Mayer, Clinton. Gas turbine blade with intra-span snubber.  United States: N. p., 2014. 
        Web.

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                    Merrill, Gary B., & Mayer, Clinton. Gas turbine blade with intra-span snubber.  United States.

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                    Merrill, Gary B., and Mayer, Clinton. Tue .  
        "Gas turbine blade with intra-span snubber".  United States.  https://www.osti.gov/servlets/purl/1149933.

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@article{osti_1149933,

  title        = {Gas turbine blade with intra-span snubber},

  author       = {Merrill, Gary B. and Mayer, Clinton},

  abstractNote = {A gas turbine blade (10) including a hollow mid-span snubber (16). The snubber is affixed to the airfoil portion (14) of the blade by a fastener (20) passing through an opening (24) cast into the surface (22) of the blade. The opening is defined during an investment casting process by a ceramic pedestal (38) which is positioned between a ceramic core (32) and a surrounding ceramic casting shell (48). The pedestal provides mechanical support for the ceramic core during both wax and molten metal injection steps of the investment casting process.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 29 00:00:00 EDT 2014},

  month        = {Tue Jul 29 00:00:00 EDT 2014}

}

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Works referenced in this record:

Damping element for independent turbomachine blades
patent, March 1988

Battig, Josef
US Patent Document 4,734,010
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4734010

Device for damping vibrations in turbomachinery blades
patent, October 1991

Roberts, Michael C.
US Patent Document 5,052,890
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5052890

Components made of hardenable and non-hardenable materials
patent, September 1993

Ortolano, Ralph J.; Ball, Kenneth A.; Serpa, Richard E.
US Patent Document 5,248,241
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5248241

Investment casting
patent, April 1996

Jago, Michael
US Patent Document 5,505,250
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5505250

Aerodynamically optimized mid-span snubber for combustion turbine blade
patent, December 1997

Pfeifer, Nathan R.; Thomas, John P.; Dangerfield, Wally N.
US Patent Document 5,695,323
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5695323

High efficiency blade configuration for steam turbine
patent, April 2002

Tanuma, Tadashi; Sakamoto, Taro
US Patent Document 6,375,420
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6375420

Blade with optimized vibration behavior
patent, January 2003

Huebner, Norbert
US Patent Document 6,503,053
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6503053

Moving blades for steam turbine
patent, January 2004

Murakami, Itaru; Suzuki, Toshio; Okuno, Kenichi
US Patent Document 6,682,306
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6682306

Investment casting cores
patent, August 2005

Beals, James T.; Draper, Samuel David; Lopes, Jose
US Patent Document 6,929,054
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6929054

Aero-mixing of rotating blade structures
patent-application, June 2008

Truckenmueller, Franl; Stueer, Heinrich; Martin, Harry F.
US Patent Application 11/639962; 20080145228
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20080145228

Snubber Assembly for Turbine Blades
patent-application, August 2011

Marra, John J.
US Patent Application 12/701041; 20110194939
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110194939

Cooled Snubber Structure for Turbine Blades
patent-application, August 2011

Mayer, Clinton A.; Campbell, Christian X.; Whalley, Andrew
US Patent Application 13/023651; 20110194943
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110194943

Works referencing / citing this record:

Turbine blade mid-span shroud
patent, March 2017

Collins, Daryl R.; Butz, David
US Patent Document 9,587,496
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9587496

Turbine blade mid-span shroud assembly
patent, February 2017

Spracher, David Randolph; Bruce, Kevin Leon; Harris, Jr., John Wesley
US Patent Document 9,574,450
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9574450

Tapered part-span shroud
patent, January 2017

Chouhan, Rohit; Davis, Holly Renae; Valliappan, Lakshmanan
US Patent Document 9,546,555
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9546555

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Similar Records

Title: Gas turbine blade with intra-span snubber

Abstract

Citation Formats

Damping element for independent turbomachine blades patent, March 1988

Device for damping vibrations in turbomachinery blades patent, October 1991

Components made of hardenable and non-hardenable materials patent, September 1993

Investment casting patent, April 1996

Aerodynamically optimized mid-span snubber for combustion turbine blade patent, December 1997

High efficiency blade configuration for steam turbine patent, April 2002

Blade with optimized vibration behavior patent, January 2003

Moving blades for steam turbine patent, January 2004

Investment casting cores patent, August 2005

Aero-mixing of rotating blade structures patent-application, June 2008

Snubber Assembly for Turbine Blades patent-application, August 2011

Cooled Snubber Structure for Turbine Blades patent-application, August 2011

Turbine blade mid-span shroud patent, March 2017

Turbine blade mid-span shroud assembly patent, February 2017

Tapered part-span shroud patent, January 2017

Damping element for independent turbomachine blades
patent, March 1988

Device for damping vibrations in turbomachinery blades
patent, October 1991

Components made of hardenable and non-hardenable materials
patent, September 1993

Investment casting
patent, April 1996

Aerodynamically optimized mid-span snubber for combustion turbine blade
patent, December 1997

High efficiency blade configuration for steam turbine
patent, April 2002

Blade with optimized vibration behavior
patent, January 2003

Moving blades for steam turbine
patent, January 2004

Investment casting cores
patent, August 2005

Aero-mixing of rotating blade structures
patent-application, June 2008

Snubber Assembly for Turbine Blades
patent-application, August 2011

Cooled Snubber Structure for Turbine Blades
patent-application, August 2011

Turbine blade mid-span shroud
patent, March 2017

Turbine blade mid-span shroud assembly
patent, February 2017

Tapered part-span shroud
patent, January 2017