| 摘要 |
PURPOSE:To avoid abnormal vibration of a gas turbine due to combustion vibration by dividing fuel nozzles into plural groups and fixing fuel quantity adjustment valves and fuel volume detectors to fuel pipes of respective groups. CONSTITUTION:Of fuel nozzles 13 of a combustion chamber 10, fuel nozzles adjoining alternately 13a, c, e, g are connected with a fuel pipe 30, and the remaining fuel nozzles 13b, d, f, h are connected with a fuel pipe 40. To the fuel pipes 30, 40, fuel quantity adjustment valves 31, 41 and fuel volume detectors 32, 42 are fixed. The fuel quantity adjustment valves 31, 41 are adjusted on the basis of output from a fuel-air ratio discriminator 65. As this makes it possible to adjust the fuel flow volume of respective groups separately, abnormal vibration die to combustion vibration can be prevented. |
