Heating furnace dew point value control method

The invention relates to a heating furnace dew point value control method which comprises the following steps: step 1, sampling by a dew point sensor, and reading an actual dew point value of a heating furnace; 2, an AD module converts the actual dew point value and outputs a digital quantity signal...

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Bibliographische Detailangaben
Hauptverfasser: HONG HANYOU, LI RUYUN, FENG FUQIANG, DENG AICHUN, ZHU JIUHUI, CAO WENYONG, YANG XIONGZHI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a heating furnace dew point value control method which comprises the following steps: step 1, sampling by a dew point sensor, and reading an actual dew point value of a heating furnace; 2, an AD module converts the actual dew point value and outputs a digital quantity signal; 3, inputting the digital quantity signal into a PID (Proportion Integration Differentiation) controller for operation, and then outputting an adjusting signal; 4, the DA module converts the adjusting signal and outputs a control signal; 5, the air proportional valve automatically adjusts the output flow of the dry air according to the control signal; and the dew point sensor synchronously reads the actual dew point value of the heating furnace, and the operation is cyclically executed from the first step and is repeated in this way. According to the control method for the dew-point value of the heating furnace, the inflation volume can be automatically adjusted according to the change of the dew-point value, so t