Pump modification for matching performance
US4219917A · kind A · utility
4Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1976 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Jun 21, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49243
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The operating characteristics and the nominal, best operating point of a multi-stage centrifugal pump are shifted to lower flow rates without loss of nominal head and without substantial loss of efficiency by machining or otherwise shortening the trailing edge of all or some of the stationary guide vanes of the diffusers between impeller stages. By so doing, a single pump size can be adapted to a range of flow requirements, as desired. Thus, it is possible to reduce the number of pump sizes manufactured, and yet supply the needs of customers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.