Supplemental seal for the chordal hinge seals in a gas turbine
US6568903B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Dec 28, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C7/28
- 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 band of the nozzle segment on a lower pressure side of the chordal hinge seal. To minimize or prevent leakage flow across the chordal hinge seal, a generally U-shaped portion seals between radially opposed surfaces of the nozzle support ring and inner band, the legs of the U-shaped portion engaging those surfaces. In a further embodiment, an arcuate sheet metal supplemental seal having a sinuous shape is disposed and seals between the radially opposed surfaces of the nozzle support ring and inner band, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.