Sealing arrangement for hot bearing housings
US4339160A · kind A · utility
8Cited by
11References
13Claims
0Family size
Inventor
Key dates
| Filing date | Jan 12, 1981 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Jan 12, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An arrangement for minimizing blockage of drain back holes from bearing housings seal cavity areas is provided. Leakage drain tubes, made of high thermal conductivity material, are positioned in the path of lube oil drain flow and serve to carry leakage oil from seal air cavities back to the lube oil drain flow path. The leakage drain tubes are cooled by the lubricating oil in the drain flow path, extending from the sump to the oil drain pipe and include flow restrictor portions at their ends to minimize hot gas leakage around the labyrinth seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.