Hybrid seal dual runner
US11549444B2 · kind B2 · utility
4Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2021 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Feb 5, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbomachine has a bearing in a bearing compartment. A first seal system isolates the bearing compartment and has: a first runner; a second runner; an inner seal encircling the first runner; and an outer seal encircling the second runner. The inner seal has a static clearance with the first runner. The outer seal has a static clearance with the second runner, greater than the inner seal static clearance. The first runner has an inner portion cantilevered inward. The second runner has an outer portion cantilevered outward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.