Hydraulic seal arrangement, more particularly on a gas turbine
US6568688B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Apr 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a hydraulic seal arrangement between two, more particularly co-rotating shafts of especially a gas turbine engine, where the radially outer shaft when viewed with reference to the shafts' axis of rotation has an annulus extending radially outward along its circumference into which the radially inner shaft when viewed with reference to the shafts' axis of rotation projects with a web that extends radially outward across its circumference, and which annulus can through an inlet area be filled siphon-fashion under centrifugal effect with a hydraulic medium at least in the area of the free end of the web when the shaft(s) is (are) rotating. In accordance with the present invention, means are provided for exhausting part of the hydraulic medium, said means branching off from an annulus area that is farthest away from the inlet area. In this manner the hydraulic medium in the annulus is continuously being renewed, so that even in a hot environment, coking of the hydraulic medium, here oil taken from the engine's oil circuit, is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.