Face seal device for high rotational speeds
US6616145B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Nov 23, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3468
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A face seal device for use with components rotating at a high rotational speed includes a non-rotating face seal ring (5) and a rotary face seal ring (11) mounted in a loose fit on and rotatable together with the rotary component. The rotary face seal ring includes a sealing face (6) which, in operation, is essentially radially aligned for cooperation with an opposite sealing face (16) of the non-rotating face seal ring. The rotary face seal ring is formed of at least a base portion (20) and an extension portion (21). The extension portion provides an additional mass and has an areal center of gravity axially spaced from the areal center of gravity of the base portion An axial spacing z between the areal centers of gravity and the mass m of the extension portion are in specific relationship with each other, whereby in operation a torque directed towards the non-rotating face seal ring is applied to the rotary face seal ring. This torque arises from the centrifugal forces that are a function of the mass of the extension portion and the spacing between the areal centers of gravity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.