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:
- Issue Date:
- 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):
-
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
B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING
- 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.
Merrill, Gary B., & Mayer, Clinton. Gas turbine blade with intra-span snubber. United States.
Merrill, Gary B., and Mayer, Clinton. Tue .
"Gas turbine blade with intra-span snubber". United States. https://www.osti.gov/servlets/purl/1149933.
@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 = {2014},
month = {7}
}
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Works referenced in this record:
Aero-mixing of rotating blade structures
patent-application, June 2008
- Truckenmueller, Franl; Stueer, Heinrich; Martin, Harry F.
- US Patent Application 11/639962; 20080145228
Snubber Assembly for Turbine Blades
patent-application, August 2011
- Marra, John J.
- US Patent Application 12/701041; 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