Control method for boiler main steam pressure

The invention relates to a control method for boiler main steam pressure. When the desuperheating water quantity increases, if the change trend of the main steam pressure rises, the coal feed quantity is reduced, and if the change trend of the main steam pressure drops, then the coal feed quantity d...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LIU YONGHONG, LIANG ZHENWU, LI XIAOHONG, HAN HAIFENG, QIANG ZHIWEN, LI MING, CHEN ERNING, ZHAO JIKANG
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING METHODS OF STEAM GENERATION STEAM BOILERS STEAM GENERATION WEAPONS
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	The invention relates to a control method for boiler main steam pressure. When the desuperheating water quantity increases, if the change trend of the main steam pressure rises, the coal feed quantity is reduced, and if the change trend of the main steam pressure drops, then the coal feed quantity does not need to be adjusted; when desuperheating water quantity decreases, if the change trend of the main steam pressure drops, the coal feed quantity is increased, and if the change trend of the main steam pressure rises, then the coal feed quantity does not need to be adjusted. According to the control method for the boiler main steam pressure, through consideration of the change trends of both the desuperheating water quantity and the main steam pressure, the coal quantity feed-forward is obtained, therefore, correction is conducted on the main steam pressure, and the influence of the desuperheating water quantity on the main steam pressure is reduced sharply.