摘要:
In a gas turbine combustor, mixing of a fuel and air is accelerated in a mixing chamber of a burner as well as in air introduction passages provided in a wall of the mixing chamber, whereby NOx emissions from premixed combustion are reduced while at the same time, ignition characteristics and flame propagation characteristics improve. The gas turbine combustor includes a plurality of combustors 10, a spark plug 13, and a cross-fire tube 15 that propagates a flame between the combustors 10. Each combustor 10 includes the burner 30 equipped with a fuel nozzle and the mixing chamber wall 32 forming the mixing chamber 31. A plurality of air introduction holes 35, 36 for introducing combustion air, along with the fuel from the fuel nozzle, into the mixing chamber 31, are provided in the mixing chamber wall 32. The combustion air and fuel jetted from the air introduction hole 35 into the mixing chamber 31 are mixed in the form of a mixture "m1" , "m2" and directed towards the spark plug 13 and the cross-fire tube 15.
摘要:
An apparatus for controlling a gas turbine combustor having a diffusion combustion burner and a premix combustion burner comprising: a rotating speed detector for detecting a rotating speed of gas turbine, a recorder for recording the detected value of the rotating speed of gas turbine detected by the rotating speed detector, an arithmetic unit for calculating a change with time of the rotating speed of gas turbine in accordance with details of the detected value of the rotating speed of gas turbine recorded in the recorder, and a fuel control unit for judging a starting situation of reduction in the rotating speed of gas turbine on the basis of the change with time of the rotating speed of gas turbine calculated by the arithmetic unit and controlling respectively a fuel flow rate for the diffusion combustion burner to be fed to the diffusion combustion burner installed in the gas turbine combustor and a fuel flow rate for the premix combustion to be fed to the premix combustion burner.
摘要:
The present invention improves the reliability of a combusting system including multiple combustors 3a, 3b and improves an environmental performance thereof. The invention includes a device that delays the start time of fuel injection from a fuel nozzle 10 of a combustor including a ignitor 9 from the start time of fuel injection from a fuel nozzle 10 of the combustor not including the ignitor 9.
摘要:
A highly-reliable combustor is provided that allows flash back of flame into a premixer to be suppressed. The combustor has a mixing chamber forming member 110 that forms a mixing chamber thereinside. The mixing chamber includes a first mixing chamber 200 broadening toward a downstream side. The member 110 includes air introduction holes 202, 203, 204 formed in a plurality of rows in an axial direction, with the air introduction holes being arranged plurally in a circumferential direction of the mixing chamber. The member 110 includes a fuel ejection hole 206 provided in a wall surface which forms the air introduction hole. The air introduction holes 202, 203, 204 are circumferentially eccentrically installed. The air introduction holes 202 located in the most upstream row are more inclined toward the downstream side than the air introduction holes 203, 204 located in the rows other than the most upstream row.
摘要:
The present invention improves the reliability of a combusting system including multiple combustors 3a, 3b and improves an environmental performance thereof. The invention includes a device that delays the start time of fuel injection from a fuel nozzle 10 of a combustor including a ignitor 9 from the start time of fuel injection from a fuel nozzle 10 of the combustor not including the ignitor 9.
摘要:
In addition to a first fuel gas heater (6) utilizing the heated water from the outlet of an economizer (10) of a heat recovery steam boiler (8), there is provided a second fuel gas heater (7) utilizing as the heat source the bleed air of a compressor (2) of a gas turbine (1). A control device (30) opens a bleed air control valve (17) of the piping (204) for supplying bleed air to the second fuel gas heater (7) at the time of starting the gas turbine combined cycle system (1000) to heat a fuel gas by the bleed air.