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为了维护锅炉气鼓水位在允许范围内,并保持锅炉给水量的稳定,以确保锅炉安全高效地产生蒸汽,对两种锅炉均设且了锅炉汽鼓给水自动调节系统。其主回路都是串级三冲量给水调节系统,如图1所示。它是具有蒸汽流量前馈信号及给水流量反馈信号和水位主信号的三冲量双回路系统。这种系统的特点是给水流量反馈形成的副回路能迅速消除给水侧的扰动,稳定给水流量,蒸汽流量的馈调节能克服虚假水位而引起的调节器误动作;水位信号形成的主回路能消除各
In order to maintain the boiler drum water level within the allowable range, and to maintain the stability of the boiler feed water to ensure the safe and efficient production of steam boiler, boilers and drums for both boilers have set up an automatic adjustment system. The main circuit is a cascade three impulse water supply regulation system, shown in Figure 1. It is a three-impulse double-loop system with a feed-forward steam flow signal, feedwater flow feedback signal, and water level main signal. The characteristic of this system is that the secondary circuit formed by feed water flow feedback can quickly eliminate the disturbance on the water supply side and stabilize the feed water flow and the steam feed can overcome the malfunction of the regulator caused by the false water level. The main circuit formed by the water level signal can be eliminated each