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Title: Nozzle airfoil having movable nozzle ribs

Abstract

A nozzle vane or airfoil structure is provided in which the nozzle ribs are connected to the side walls of the vane or airfoil in such a way that the ribs provide the requisite mechanical support between the concave side and convex side of the airfoil but are not locked in the radial direction of the assembly, longitudinally of the airfoil. The ribs may be bi-cast onto a preformed airfoil side wall structure or fastened to the airfoil by an interlocking slide connection and/or welding. By attaching the nozzle ribs to the nozzle airfoil metal in such a way that allows play longitudinally of the airfoil, the temperature difference induced radial thermal stresses at the nozzle airfoil/rib joint area are reduced while maintaining proper mechanical support of the nozzle side walls.

Inventors:
 [1];  [1]
  1. Greenville, SC
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
OSTI Identifier:
874422
Patent Number(s):
6386827
Assignee:
General Electric Company (Schenectady, NY)
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
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nozzle; airfoil; movable; ribs; vane; structure; provided; connected; walls; provide; requisite; mechanical; support; concave; convex; locked; radial; direction; assembly; longitudinally; bi-cast; preformed; wall; fastened; interlocking; slide; connection; andor; welding; attaching; metal; allows; play; temperature; difference; induced; thermal; stresses; airfoilrib; joint; reduced; maintaining; proper; thermal stresses; mechanical support; /415/416/

Citation Formats

Yu, Yufeng Phillip, and Itzel, Gary Michael. Nozzle airfoil having movable nozzle ribs. United States: N. p., 2002. Web.
Yu, Yufeng Phillip, & Itzel, Gary Michael. Nozzle airfoil having movable nozzle ribs. United States.
Yu, Yufeng Phillip, and Itzel, Gary Michael. Tue . "Nozzle airfoil having movable nozzle ribs". United States. https://www.osti.gov/servlets/purl/874422.
@article{osti_874422,
title = {Nozzle airfoil having movable nozzle ribs},
author = {Yu, Yufeng Phillip and Itzel, Gary Michael},
abstractNote = {A nozzle vane or airfoil structure is provided in which the nozzle ribs are connected to the side walls of the vane or airfoil in such a way that the ribs provide the requisite mechanical support between the concave side and convex side of the airfoil but are not locked in the radial direction of the assembly, longitudinally of the airfoil. The ribs may be bi-cast onto a preformed airfoil side wall structure or fastened to the airfoil by an interlocking slide connection and/or welding. By attaching the nozzle ribs to the nozzle airfoil metal in such a way that allows play longitudinally of the airfoil, the temperature difference induced radial thermal stresses at the nozzle airfoil/rib joint area are reduced while maintaining proper mechanical support of the nozzle side walls.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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