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.
- Research Organization:
- RTI International, Research Triangle Park, NC (United States)
- DOE Contract Number:
- AC21-93MC30244
- Assignee:
- General Electric Co., Schenectady, NY (United States)
- Patent Number(s):
- US 5,509,669/A/
- Application Number:
- PAN: 8-491,757
- OSTI ID:
- 224979
- Resource Relation:
- Other Information: PBD: 23 Apr 1996
- Country of Publication:
- United States
- Language:
- English
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Gas-path leakage seal for a turbine
Gas-path leakage seal for a turbine