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Title: Gas-path leakage seal for a gas turbine

Abstract

A gas-path leakage seal is described for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine (such as combustor casing segments). The seal includes a generally imperforate foil-layer assemblage which is generally impervious to gas and is located in the leakage-gap. The seal also includes a cloth-layer assemblage generally enclosingly contacting the foil-layer assemblage. In one seal, the first edge of the foil-layer assemblage is left exposed, and the foil-layer assemblage resiliently contacts the first member near the first edge to reduce leakage in the ``plane`` of the cloth-layer assemblage under conditions which include differential thermal growth of the two members. In another seal, such leakage is reduced by having a first weld-bead which permeates the cloth-layer assemblage, is attached to the metal-foil-layer assemblage near the first edge, and unattachedly contacts the first member. 4 figs.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
RTI International, Research Triangle Park, NC (United States)
OSTI Identifier:
224979
Patent Number(s):
5,509,669
Application Number:
PAN: 8-491,757
Assignee:
General Electric Co., Schenectady, NY (United States)
DOE Contract Number:  
AC21-93MC30244
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 23 Apr 1996
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; GAS TURBINES; SEALS; DESIGN; OPERATION; LEAKS; FABRICATION; COMBUSTION CHAMBERS

Citation Formats

Wolfe, C E, Dinc, O S, Bagepalli, B S, Correia, V H, and Aksit, M F. Gas-path leakage seal for a gas turbine. United States: N. p., 1996. Web.
Wolfe, C E, Dinc, O S, Bagepalli, B S, Correia, V H, & Aksit, M F. Gas-path leakage seal for a gas turbine. United States.
Wolfe, C E, Dinc, O S, Bagepalli, B S, Correia, V H, and Aksit, M F. Tue . "Gas-path leakage seal for a gas turbine". United States.
@article{osti_224979,
title = {Gas-path leakage seal for a gas turbine},
author = {Wolfe, C E and Dinc, O S and Bagepalli, B S and Correia, V H and Aksit, M F},
abstractNote = {A gas-path leakage seal is described for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine (such as combustor casing segments). The seal includes a generally imperforate foil-layer assemblage which is generally impervious to gas and is located in the leakage-gap. The seal also includes a cloth-layer assemblage generally enclosingly contacting the foil-layer assemblage. In one seal, the first edge of the foil-layer assemblage is left exposed, and the foil-layer assemblage resiliently contacts the first member near the first edge to reduce leakage in the ``plane`` of the cloth-layer assemblage under conditions which include differential thermal growth of the two members. In another seal, such leakage is reduced by having a first weld-bead which permeates the cloth-layer assemblage, is attached to the metal-foil-layer assemblage near the first edge, and unattachedly contacts the first member. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {4}
}