Claims
- 1. A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine, said seal comprising:
- a) a generally imperforate foil-layer assemblage generally impervious to gas, disposed in said gas-path leakage-gap, and having a first edge, wherein said foil-layer assemblage resiliently contacts said first member proximate said first edge; and
- b) a cloth-layer assemblage contacting said first and second members, wherein said cloth-layer assemblage generally enclosingly contacts said foil-layer assemblage leaving said first edge exposed.
- 2. The seal of claim 1, wherein said foil-layer assemblage consists essentially of metal, and also including a weld-bead permeating said cloth-layer assemblage attaching together said foil-layer assemblage and said second member, wherein said foil-layer assemblage is spaced apart from said second member and has a second edge generally opposite said first edge and enclosed by said cloth-layer assemblage, and wherein said weld-bead is disposed between said first and second edges.
- 3. The seal of claim 1, wherein said foil-layer assemblage has a second edge generally opposite said first edge and left exposed by said cloth-layer assemblage, and wherein said foil-layer assemblage resiliently contacts said second member proximate said second edge.
- 4. The seal of claim 1, wherein said foil-layer assemblage has a second edge generally opposite said first edge, said first member has a first surface with a first slot, said second member has a second surface with a second slot generally opposing said first slot, said first edge is disposed within said first slot, said second edge is disposed within said second slot, said gas-path leakage-gap has a higher-pressure end and a lower-pressure end, said first slot has a slot wall surface generally facing said higher-pressure end and inclined toward said second surface.
- 5. The seal of claim 1, wherein said first member has a first surface, said second member has a second surface with a slot, said first edge resiliently contacts said first surface, said second edge is disposed within said slot, said gas-path leakage-gap has a higher-pressure end and a lower-pressure end, said slot has a surface opening, and said slot is inclined toward said higher pressure end proximate said surface opening.
- 6. A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine, said seal comprising:
- a) a generally imperforate metal-foil-layer assemblage generally impervious to gas, disposed in said gas-path leakage-gap, and having a first edge;
- b) a cloth-layer assemblage contacting said first and second members, wherein said cloth-layer assemblage generally enclosingly contacts said metal-foil-layer assemblage; and
- c) a first weld-bead permeating said cloth-layer assemblage, attached to said metal-foil-layer assemblage proximate said first edge, and unattachedly contacting said first member.
- 7. The seal of claim 6, also including a second weld-bead permeating said cloth-layer assemblage attaching together said metal-foil-layer assemblage and said second member, wherein said metal-foil-layer assemblage is spaced apart from said second member and has a second edge generally opposite said first edge and enclosed by said cloth-layer assemblage, and wherein said second weld-bead is disposed between said first and second edges.
- 8. The seal of claim 6, wherein said metal-foil-layer assemblage has a second edge generally opposite said first edge, and also including a second weld-bead permeating said cloth-layer assemblage, attached to said metal-foil-layer assemblage proximate said second edge, and unattachedly contacting said second member.
- 9. The seal of claim 6, wherein said metal-foil-layer assemblage has a second edge generally opposite said first edge, said first member has a first surface with a first slot, said second member has a second surface with a second slot generally opposing said first slot, said first edge is disposed within said first slot, said second edge is disposed within said second slot, said gas-path leakage-gap has a higher-pressure end and a lower-pressure end, said first slot has a slot wall surface generally facing said higher-pressure end and inclined toward said second surface.
- 10. The seal of claim 6, wherein said first member has a first surface, said second member has a second surface with a slot, said first weld-bead contacts said first surface, said second edge is disposed within said slot, said gas-path leakage-gap has a higher-pressure end and a lower-pressure end, said slot has a surface opening, and said slot is inclined toward said higher pressure end proximate said surface opening.
Government Interests
This invention was made with Government support under Government Contract No. DEAC21-93-MC30244 awarded by the Department of Energy. The Government has certain rights to this invention.
US Referenced Citations (17)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0135653 |
Jun 1988 |
JPX |