Exhaust case for a turbomachine with a flexible hub
US9435225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2012 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Sep 17, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/941
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust case for a turbomachine includes, from outside towards inside, yokes, a collar and a hub, which are annular and coaxial. The hub is connected to the collar by radial arms and extends between an annular flange and an inner collar capable of guiding a gas flow. In the hub each arm includes a rib in a shape of a triangle which ends with the flange. The inner collar is extended into the hub by a plate capable of transferring forces between the flange and the yokes. The plate can be advantageously inclined with respect to a radial plane. Two portions, which enclose a cut-out formed in a minimum-stress region along the plate, are coupled with pre-set plays. The case is capable of absorbing compression and traction at a thermal gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.