Air riding seal for a turbine
US9394799B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2015 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3448
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air riding seal between a rotor and a stator in a turbine of a gas turbine engine, where an annular piston is movable in an axial direction within a housing that extends from the stator, and a bellows is secured to the annular piston to form a flexible air passageway from a compressed air inlet through the annular piston and into a cushion cavity that forms an air riding seal between the annular piston and the rotor sealing surface. In another embodiment, a flexible seal secured to and extending from the annular piston forms a sealing surface between the annular piston chamber and the annular piston to provide a seal and allow for axial movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.