| 摘要 |
<p>PURPOSE:To permit the restraining of combustion vibration upon non-stationary operation by a method wherein the control device of air for combustion in a combustion device is added with an operating end automatic tuning circuit having the restraining function of feedback. CONSTITUTION:The mixing amount of waste gas, the delay of charging of the same gas and the like are detected by a pressure gauge 101 upon changing a load and the change of power spectrum of a pressure of gas in a boiler furnace 1, which is generated by the delay of charging and the like, is analysed sequentially. An operating amount, linked with the positive feedback of the resonance phenomenon of the change of a gas pressure, is specified to restrain the development of feedback in a combustion system by undershooting or overshooting the operating amount or the changing rate of the operating amount through an automatic tuning circuit 310.</p> |
