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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:
;
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1149933
Patent Number(s):
8,790,082
Application Number:
12/848,456
Assignee:
Siemens Energy, Inc. (Orlando, FL)
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. 2014. "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 = {},
url = {https://www.osti.gov/biblio/1149933}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 29 00:00:00 EDT 2014},
month = {Tue Jul 29 00:00:00 EDT 2014}
}

Works referenced in this record:

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


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


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


Works referencing / citing this record:

Turbine blade mid-span shroud
patent, March 2017


Turbine blade mid-span shroud assembly
patent, February 2017


Tapered part-span shroud
patent, January 2017