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凝汽器在冬季运行时,一般需要通过调整循环水上水塔防冻门开度,提高循环水入口温度,以避免凝汽器真空过高导致的机组振动等安全隐患。这种常规控制方式对双压凝汽器而言,在避免双压凝汽器低压侧真空过高的同时,也人为降低了高压侧真空,一定程度上影响了双压凝汽器运行经济性。
Condenser operation in winter, the general need to adjust the circulating water tower antifreeze door opening to improve the inlet temperature of circulating water to avoid excessive condenser vacuum caused by the unit vibration and other security risks. This conventional control method for double-pressure condenser, to avoid double-pressure condenser low-pressure side of the vacuum is too high, but also artificially reduce the high-pressure side of the vacuum, to a certain extent, affected the operation of dual-pressure condenser economy .