Servo-controlled metering valve and fluid injection system
US11873921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2022 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Aug 9, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is directed to a metering valve for controlling the amount of a fluid passed through the valve and a servo-valve for controlling the metering valve, wherein the servo-valve is decoupled from the metering valve to thermally distance or thermally isolate the servo-valve from any heat from the fluid passing through the metering valve. The metering valve and servo-valve may be used to attemperate a steam stream in a power plant attemperation system, such as a system for attemperating a superheated steam gas stream from a power plant being used for a heat-recovery steam generator. An integrated metering valve and discharge valve for discharging fluid during periods of non-use is also provide. Changeable throttle plates are also provided that control the flow of the fluid through the control chamber of the metering valve and the discharge valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.