Fuel nozzle configuration for a fluid-fuel burner, oil burner using the fuel nozzle configuration and method for regulating the fuel supply of a fluid-fuel burner

摘要

A fuel nozzle configuration for a fluid-fuel burner includes a main axis, a backflow region, a fuel nozzle and an inflow region disposed along the main axis between the fuel nozzle and the backflow region. A swirl flow of fuel can be generated in the inflow region. The backflow region has an annular gap adjacent the inflow region which narrows in the direction downstream of the inflow region and merges into a backflow conduit. An oil burner for a gas turbine uses the fuel nozzle configuration and a method is provided for regulating the fuel supply of a fluid-fuel burner.