Mitsubishi Heavy Industries Limited

Kouichi Nishida

Shigemi Mandai

Katsunori Tanaka

Satoshi Tanimura

Tatsuo Ishiguro

Mitsuru Inada

Tetsuo Gora

A gas turbine combustor, in which plural pre-mixers that inject fuel into swirling air passages are arranged to surround a pilot burner, and a pilot flame, guided by a pilot cone in the shape of a flaring pipe and provided at the rear end of the pilot burner, is mixed with a pre-mixture blown out from the pre-mixers to obtain a combustion gas, comprising flame-stabilizing means. The flame-stabilizing means lower the disturbance in a region where the pre-mixture and the pilot flame are mixed or stabilize the pilot flame, so that the flame generated by igniting the pre-mixture with the pilot flame is stabilized. By stabilizing the flame, combustion with a leaner air-fuel ratio is possible, and thereby the amount of NOx can be decreased.

Gas turbine combustor

A multi-nozzle combustor comprising a pilot nozzle for flame retention and a plurality of main nozzles arranged around the pilot nozzle, each of the nozzles including an outer cylinder, an inner cylinder, and an annular passage defined between the outer and inner cylinders and forming therein a mixture-evaporation region for a fuel ejected and atomized by an airflow.

Multi-nozzle combustor

Growing community of inventors

Hyogo-ken, Japan

Kouichi Nishida