Pump diffuser anti-spin device
US6726449B2 · kind B2 · utility
20Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Apr 16, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D13/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a downhole centrifugal pump, diffusers are stacked one on top of each other inside of tubular pump housing without contacting the pump drive shaft or impellers. A first compressive device applies a pre-compressive force to a stack of diffusers to prevent the diffusers from rotating inside the tubular housing of the pump with the drive shaft. A second compressive device located between the first compressive device and the stack of diffusers applies another compressive load on the stack of diffusers in the event the first compressive device ceases to apply the compressive load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.