Seal assembly for an intershaft seal in a gas turbine engine
US6196790A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1998 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3472
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal assembly for use in an intershaft seal includes a first seal that seals to a seal plate on an inner rotor shaft, a second seal that seals to a seal plate on an outer rotor shaft, and an intermediate seal that is supported by a stator assembly and seals to the first seal and the second seal. The intermediate seal may include a seal segment affixed to the stator assembly, a ring seal between the seal segment and the first seal, and a ring seal between the seal segment and the second seal. An intershaft seal with this seal assembly has less flex than a prior art intershaft seal and thereby results in greater durability and less seal wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.