Self-adjusting device for controlling the clearance between rotating and stationary components of a thermally loaded turbo machine
US9963988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2012 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Mar 31, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A self-adjusting device for controlling the clearance (C), especially in the radial direction, between rotating and stationary components of a thermally loaded turbo machine, changes clearance (C) in a linear and/or non-linear way during transition of the machine between standstill and steady-state operation. Simple and effective control can be achieved, even in the case of a nonlinear variation of the clearance during transitional operation, by the self-adjusting device including at least two different driving elements (A, B) to move the rotating and fixed components relative to each other in order to change the clearance (C) between them, and by the different driving elements (A, B) being configured to be activated at different times during the transition of the machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.