Dry gas seal
US7144016B2 · kind B2 · utility
67Cited by
15References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Apr 24, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/342
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gas seal assembly comprises a pair of mutually rotatable sealing members A, B, each of which has a face adjacent a gap between the two members. One of the members B is urged in a direction attempting to close the gap h which constitutes a leakage path through the seal assembly. A gas bleed arrangement 7 allows gas from a high pressure side P3 of the seal assembly to bleed into the gap at a position radially spaced between an inner diameter of the members and an outer diameter of the members A,B so as to apply a force tending to separate the members, the force decreasing as the size of the gap increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.