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Title: Rotor blades for turbine engines

Abstract

A tip shroud that includes a plurality of damping fins, each damping fin including a substantially non-radially-aligned surface that is configured to make contact with a tip shroud of a neighboring rotor blade. At least one damping fin may include a leading edge damping fin and at least one damping fin may include a trailing edge damping fin. The leading edge damping fin may be configured to correspond to the trailing edge damping fin.

Inventors:
;
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1083205
Patent Number(s):
8371816
Application Number:
12/533,378
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
DOE Contract Number:  
FC26-05NT42643
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Piersall, Matthew R, and Potter, Brian D. Rotor blades for turbine engines. United States: N. p., 2013. Web.
Piersall, Matthew R, & Potter, Brian D. Rotor blades for turbine engines. United States.
Piersall, Matthew R, and Potter, Brian D. Tue . "Rotor blades for turbine engines". United States. https://www.osti.gov/servlets/purl/1083205.
@article{osti_1083205,
title = {Rotor blades for turbine engines},
author = {Piersall, Matthew R and Potter, Brian D},
abstractNote = {A tip shroud that includes a plurality of damping fins, each damping fin including a substantially non-radially-aligned surface that is configured to make contact with a tip shroud of a neighboring rotor blade. At least one damping fin may include a leading edge damping fin and at least one damping fin may include a trailing edge damping fin. The leading edge damping fin may be configured to correspond to the trailing edge damping fin.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {2}
}

Works referenced in this record:

Interblade Baffle and Damper
patent, August 1973


Blade Assembly for a Fluid Flow Machine
patent, November 1975


Coverplate damping arrangement
patent, May 1978


Turbine blade damper
patent, January 1980


Cantilevered structures
patent, January 1981


Aerofoil blade damping
patent, April 1990


Blade-to-blade vibration damper
patent, June 1990


Shroud insert for turbomachinery blade
patent, January 1992


Rotor tip shroud damper including damper wires
patent, April 1993


Gas turbine blade damper
patent, May 1994


Vibration damping
patent, March 1998


Turbine blade platform seal
patent, July 1999


Method of applying wear-resistant materials to turbine blades, and turbine blades having wear-resistant materials
patent, December 2000


Aerofoil blade damper
patent, September 2001


Steam turbine
patent, January 2002


Turbine bucket damper pin
patent, August 2004


Vibration damper assembly for the buckets of a turbine
patent, February 2005


Shrouded turbine blades with locally increased contact faces
patent, February 2006


Rotor blade for a rotary machine
patent, June 2006


Rotor blade for a rotary machine
patent, July 2008


Gas turbine blade shroud
patent, December 2009


Turbine blade tip shroud
patent, July 2010


Gas turbine blade shroud
patent-application, January 2008


Turbine Blade Tip Shroud
patent-application, February 2008


Systems for preventing wear on turbine blade tip shrouds
patent-application, June 2008