介绍了某电厂的汽动给水泵乏汽吸收式热泵机组系统，对该厂的给水泵汽轮机乏汽至主机凝汽器蝶阀进行流量计算，分析蝶阀特性，利用汽动给水泵排汽中间容积特性分析得出热泵机组故障后蝶阀动作时间与汽动给水泵排汽压力的关系，并制定合理的控制逻辑为机组的安全运行提供指导。%Waste-heat-absorbing heat pump unit of steam feed pump in a power plant was introduced. The exhausted steam flow rate between feed water pump turbine and butterfly valve of condenser was calculated. Based on the analysis of butterfly valve feature and steam volume feature,the relationship between the action time of butterfly valve and the discharge pressure of water feed pump was concluded. Besides,reasonable control logic was formulated to provide guidance for safe operation of unit.
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