Center burner in a multi-burner combustor
US5729968A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1997 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Mar 17, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/00008
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a gas turbine having a plurality of combustors, each having an annular array of outer fuel nozzles arranged about a center fuel nozzle. A method for operating the combustors wherein the annular array is supplied with fuel from a diffusion manifold and at least one pre-mix manifold, and further wherein the center nozzle is supplied with fuel from a center premix manifold includes the steps of: PA1 a) at start-up, supplying some of the annular array nozzles with diffusion fuel; PA1 b) at part speed supplying pre-mix fuel to one of the nozzles in the annular array; PA1 c) at full speed, part load, transferring the annular array nozzles receiving diffusion fuel to pre-mix fuel; PA1 d) as load is increased supplying pre-mix fuel to the center nozzle; and then PA1 e) supplying additional pre-mix to all nozzles as load increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.