Kawasaki Jukogyo Kabushiki Kaisha

Shinichi Kajita

Junichi Kitajima

Kenji Mori

Provided is a lean fuel sucking gas turbine system including a compressor for compressing a mixed gas having a fuel and air mixed to a concentration of an inflammable limit or lower, thereby producing a compressed gas, a first catalyst combustor for burning the compressed gas by a catalyst reaction, a turbine adapted to be driven by a combustion gas from a second catalyst combustor, and a reproducer for heating the compressed gas to be introduced into the first catalyst combustor with an exhaust gas from the turbine. Between the turbine and the reproducer, there is arranged a duct burner for flame-burning a first auxiliary fuel in the exhaust gas. Thus, it is possible to attain efficient operation of the system while simplifying the entire constitution and to prevent the blow-by of the mixed gas.

Lean fuel intake gas turbine system

A combustor device of a gas turbine engine, which combustor device is supplied with compressed air from a compressor and delivers combustion gas to a turbine, comprises an outer casing and an inner casing defining therein a combustion chamber and forming between the outer and inner casings an annular passage for the intake of the compressed air, a swirler opening being provided at the innermost end of the inner casing for taking the compressed air into the combustion chamber. Swirling motion of the compressed air around the inlet of the swirler opening, which causes static pressure drop at the swirler opening inlet and resultant undesirable combustion, is effectively prevented by providing swirl preventing vanes between the inner and outer casings. When the swirl preventing vanes are provided near the swirler opening, guide vanes may be provided near the upstream end of the annular passage to intentionally impart swirling motion to the compressed air to prevent non-uniform distribution of the supplied compressed air.

Growing community of inventors

Kobe, Japan

Shinichi Kajita