Fuel injector arrangement for gas-or liquid-fuelled turbine

摘要

The arrangement comprises means (16) for producing at least one air stream for mixing with a supply of fuel but wherein the supply of fuel is initially injected into at least one zone (32) adjacent a said air stream but shielded therefrom, whereby fuel-rich pockets of fluid are formed in the zone(s) (32). The pockets ensure flame stability at least at lower power settings. As shown, the zone is defined by a wall of a swirler (16). The fuel is shown injected through nozzles (20). Additional nozzles (23) for supplementary supply of fuel may be provided in a block (15); a plate (17) is arranged between block (15) and swirler (16).