Seal arrangement in a machine
US7192246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2004 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Jul 12, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/445
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal arrangement, for example a brush seal 8′ in a gas turbine engine, includes thermal matching means for matching the rates of response of a supporting ring 14′, 16′ of the seal, and of a rotatable component 4 with which the seal cooperates, to thermal changes in the environment of the seal induced by changes in operating conditions. The thermal matching means may comprise a slugging mass 24 and/or thermal insulation 28. Alternatively, or in addition, the region 24 of the housing at which the seal 8′ is mounted may be made from a relatively low thermal expansion material. These measures reduce the rate of expansion and contraction of the seal 8′ as the temperature in the engine varies so as to match more closely the rate of expansion and contraction of a rotatable component with which the seal cooperates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.