Resistant components for submersible pump stages
US4678399A · kind A · utility
18Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1985 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Oct 23, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D7/02
- 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 diffusers and impellers located within a housing. Wear resistant inserts are secured to the diffusers and impellers. The inserts include inserts with cylindrical surfaces for radial support and sealing, and inserts with flat transverse surfaces for thrust. The inserts are preferably formed of tungsten carbide and are harder than the material of the impellers and the diffusers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.