Valve for dynamic control of fuel flow rate in gas turbine power plant, power plant and components thereof employing such valve, and method of constructing such valve
US6997437B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 24, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Jan 18, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C7/232
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a valve comprising a valve stem threaded with a translator having a flow modulating region, in which rotation of the valve stem about its axis causes the translator to move axially relative to the valve stem. In one aspect, the threads on the translator and the valve stem threads have substantially similar coefficients of thermal expansion. In another aspect, a protrusion limits axial movement of the valve stem in one direction, the valve stem has at least one protuberance, at least one gland is engaged with the valve body, and at least one shim is positioned between the protuberance and the gland so as to limit axial movement of the valve stem relative to the valve body in an opposite direction. There are also disclosed power generating systems including such valves, and methods of constructing such valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.