Clearance arrangement
US8272835B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jan 23, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine comprising of a turbine blade, an adjustable casing, and a clearance control arrangement. The clearance control arrangement further comprises an actuator operatively connected to a piston within a cylinder wherein the piston divides the cylinder by a sealing engagement with a wall of the cylinder into a first volume and a second volume. The first volume is operatively connected to a first piezo electric pump that increases a pressure in the first volume, and the second volume is operatively connected to a second piezo electric pump that increases a second pressure in the second volume, such that the relative displacement of the piston is determined by a pressure balance between the first and second pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.