Centrufugal pump with thermally isolated and dynamically air cooled shaft seal assembly
US5624245A · kind A · utility
15Cited by
26References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1994 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Oct 26, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2240/61
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A high temperature, centrifugal pump includes a thermally isolated and dynamically air cooled shaft seal. Carbon graphite insulators formed of plural elements juxtaposed together (46) insulate the seal assembly (34) from the pump housing (16). A hollow drive shaft limits heat conducted from the impeller during operation while a fan (56) forcibly flows air past the seal assembly to conduct heat energy away from the shaft seal. The insulator (46) reduces heat energy conducted to the seal assembly (42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.