Fluid admission valve structure
US4456032A · kind A · utility
10Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1982 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Jan 18, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87016
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an admission valve structure for a turbine all of the valves except the first opening one are spring biased closed, when seated. Because of the sequential opening of the valves, the valve closing bias of each spring acts as an opening bias relative to all earlier opening valves until that valve is opened. The combined spring forces act to open at least some of the valves thus permitting the governor to attain minimum speed once the throttle valve is opened in the steam header.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.