Single-shaft multi-stage centrifugal compressor
US4725196A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1987 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Mar 16, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/444
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A single-shaft multi-stage centrifugal compressor has a multiplicity of impellers for compressing a main gas and an impeller for compressing an intermediate suction gas which are carried by the same impeller shaft. The suction pressure of the impeller constituting the final stage for the compression of the main gas is maintained higher than the suction pressure of the impeller for compressing the intermediate suction gas. With this arrangement, a part of the main gas of a pressure slightly higher than the intermediate suction gas is introduced into the shaft seals, and the shaft seals and drainers are protected from any corrosive and toxic components which may be contained by the intermediate suction gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.