Control apparatus and a control method of a gas turbine combustor
US5339620A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23R3/26
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control apparatus of a gas turbine combustor obtains a stable combustion with limited NOx emission through a control of a fuel flow rate according to a turbine output and a control of a flow rate of intake air mixed with the fuel. The control apparatus includes an apparatus for detecting at least one of the temperature and the humidity of intake air taken into the combustor, an apparatus for determining and storing, in advance, a stable combustion limit line between a stable combustion region and an unstable combustion region, on a plane of coordinates of a ratio of fuel flow rate to an intake air flow rate or an intake air flow rate and the temperature or the humidity of the intake air, on each turbine load, an apparatus for detecting an instant operational point of the combustor on the plane of coordinates, and an apparatus for correcting the intake air flow rate or the ratio of fuel flow rate to the intake air flow rate according to an increase in the detected temperature or humidity so that the instant operational point does not cross the stable combustion limit line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.