Supplemental seal for the chordal hinge seals in a gas turbine
US6719295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jun 26, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a gas turbine having a chordal hinge seal between an inner rail of each nozzle segment and an annular axially facing sealing surface of a nozzle support ring, a supplemental seal is disposed between the support ring and inner rail of the nozzle segment on a lower pressure side of the chordal hinge seal. The supplemental seal comprises a segmented annular composite tubular woven compliant seal disposed in a cavity along a sealing surface of the inner rail of the segment. The seal bears against the annular sealing surface of the nozzle support ring, which compresses the seal. Because of the compliant nature of the seal, a supplemental seal is formed on the low pressure side of the chordal hinge seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.