Abrasion resistant centrifugal pump
US5722812A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1997 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jan 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/901
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal well pump has modules of pumping stages, each module having a separate thrust bearing. The thrust bearing for each module is supported by an uppermost diffuser of the module. A thrust runner rotates with the shaft and engages the stationary thrust bearing. A tension member engages the runner and extends downward through the stages. The tension member has a number of upward facing load shoulders, one for each impeller within the module. Each of the load shoulders supports the hub of one of the impellers. Downthrust on each impeller transfers through the load shoulder to the tension member, and from there to the thrust runner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.