Interstage capacity control valve with side stream flow distribution and flow regulation for multi-stage centrifugal compressors
US11391289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2020 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Centrifugal compressors can incorporate a side stream flow of intermediate pressure vapor between stages of that compressor. The side stream flow can be controlled by a side stream injection port controlled by a capacity control valve that has a curved surface facing a flow of refrigerant from the first stage to the second stage. The capacity control valve can allow or obstruct flow through the side stream injection port. The capacity control valve can extend and retract in a direction substantially perpendicular to the direction of flow from the first stage impeller to the second stage impeller. The side stream injection port and the capacity control valve can be ring-shaped. The side stream injection port and the capacity control valve can allow at least some of the side stream to be introduced on a side of the capacity control valve opposite the curved surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.