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FLUIDIZED BED BOILER MONITORING DEVICE, AND ITS METHOD, PROGRAM AND RECORDING MEDIUM
FLUIDIZED BED BOILER MONITORING DEVICE, AND ITS METHOD, PROGRAM AND RECORDING MEDIUM
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机译：流化床锅炉监控装置及其方法，程序和记录介质
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摘要
PROBLEM TO BE SOLVED: To provide a fluidized bed boiler monitoring device for accurately detecting abnormality in a fluidized condition or in a furnace in a short time.;SOLUTION: The fluidized bed boiler monitoring device comprises a FFT frequency property calculating means 95 for calculating a power spectrum per frequency and a dimensionless power spectrum per frequency in which the power spectrum per frequency is made dimensionless in accordance with a differential pressure value inside a fluidized bed and a differential pressure value outside the fluidized bed, a first abnormality determining means 97 for calculating a high frequency strength factor as a change factor before/after a FFT treatment interval for all power spectrums in a first preset frequency band based on the power spectrum per frequency and determining abnormality in the furnace, and a second abnormality determining means 99 for determining that a fluidization index value in which an average value for all power spectrums in a preset time is made dimensionless, in a second preset frequency band based on the power spectrum per frequency in which a decibel value for the dimensionless power spectrum per frequency is a preset decibel value or greater, shows the abnormality of fluidization.;COPYRIGHT: (C)2005,JPO&NCIPI
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