Global to push GA events into
skip to main content

Title: Gas-path leakage seal for a gas turbine

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:
OSTI Identifier:
224979
Assignee:
General Electric Co., Schenectady, NY (United States) PTO; SCA: 421000; PA: EDB-96:080964; SN: 96001577520
Patent Number(s):
US 5,509,669/A/
Application Number:
PAN: 8-491,757
Contract Number:
AC21-93MC30244
Resource Relation:
Other Information: PBD: 23 Apr 1996
Research Org:
Research Triangle Institute
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; GAS TURBINES; SEALS; DESIGN; OPERATION; LEAKS; FABRICATION; COMBUSTION CHAMBERS