Surge control and recovery for a centrifugal compressor
US5306116A · kind A · utility
58Cited by
25References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1993 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Mar 10, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for controlling working fluid surge in a centrifugal compressor include preventing surge by using a variable-speed prime-mover to achieve a minimum desired surge margin. Surge prevention is also accomplished by continuously modulating a blowoff valve to maintain an actual compressor pressure ratio at a predetermined target maximum value. Surge detection is accomplished by monitoring the time rate of change of the final stage discharge pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.