Centrifugal pump stage with abrasion resistant elements
US4781531A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Oct 13, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/506
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal submersible pump has wear resistant features to resist erosion due to sand laden fluid from a well. The pump has a plurality of stages, each having a diffuser and an impeller located within a housing. The diffuser has a sleeve in its inner portion that has a flange on its upper end. The sleeve is a separate component from the remaining portions of the diffuser and harder. The impeller has a vane section and a hub. The hub is carried inside the sleeve. The hub has a flange that bears against the flange of the diffuser sleeve. The impeller hub is a separate component from the vane section of the impeller and is of a harder material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.