Gas-path leakage seal for a gas turbine

Patent · 01 January 1996

OSTI ID:870382

Wolfe, Christopher E ^[1]; Dinc, Osman S ^[2]; Bagepalli, Bharat S ^[1]; Correia, Victor H ^[3]; Aksit, Mahmut F ^[2]

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1. Schenectady, NY
2. Troy, NY
3. New Lebanon, NY

A gas-path leakage seal 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.

• Research Organization: GENERAL ELECTRIC CO
• DOE Contract Number: AC21-93MC30244
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 5509669
• OSTI ID: 870382
• Country of Publication: United States
• Language: English

Related Subjects

/277/415/
assemblage
attached
casing
casing segments
cloth-layer
combustor
combustor casing
conditions
contacting
contacts
differential
differential thermal
edge
enclosingly
exposed
foil-layer
gas
gas turbine
gas-path
gas-path leakage
gas-path leakage-gap
growth
imperforate
impervious
leakage
leakage seal
leakage-gap
left
located
metal-foil-layer
near
permeates
plane
reduce
reduced
resiliently
seal
sealing
segments
spaced-apart
thermal
thermal growth
turbine
unattachedly
weld-bead