Turbomachine stator including a stage of stator vanes actuated by an automatically centered rotary ring
US7938620B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2007 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Feb 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The stator includes a casing and at least one stage of variable-pitch stator vanes. The vanes are moved by an actuator ring outside the casing and are carried thereby. The ring is connected by links to the vanes in order to actuate them simultaneously. The casing includes a stationary coaxial rail projecting from the outside surface of the casing and at least three circumferentially spaced-apart groups of wheels are constrained to move along the rail. Each group of wheels is coupled to the ring by a radial guidance arrangement. Each group of wheels includes at least two wheels engaged with the rail, and each wheel being mounted to rotate on a radially-oriented pin, said pin being mounted directly on said ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.