Impeller shroud with thermal actuator for clearance control in a centrifugal compressor
US11002284B2 · kind B2 · utility
1Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jun 7, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/624
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of an impeller shroud in a turbine engine. The system comprises a thermal driver coupled between the impeller shroud and engine casing by hinged linkages. The thermal driver includes an annular ring and annular seal which together define thermal driver cavity. Relatively warm or relatively cool air supplied to the thermal driver cavity cause expansion and contraction, respectively, of the annular ring which is translated by linkages into axially forward and aft motion, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.