基于EBSILON的AP1000核电站给水泵在给水管路位置研究  

Research on the Position of Water Supply Pipeline of AP1000 Nuclear Power Plant Based on EBSILON

作　　者：王渡 丁文博 黄嘉 刘玉贤 WANG Du;DING Wen-bo;HUANG Jia;LIU Yu-xian(Shanghai University of Electric Powe,Shanghai 200090,China)

机构地区：[1]上海电力大学,上海200090

出　　处：《汽轮机技术》2020年第6期462-465,472,共5页Turbine Technology

摘　　要：针对AP1000核电站二回路回热系统,高压加热器(简称高加)汽水两侧压差较大,提出改变给水泵位置的两种方案。考虑到给水泵位置改变的可靠性问题,计算、比较两种方案的有效汽蚀余量,确保核电机组给水泵能够长期安全运行。利用EBSILON仿真软件搭建模型,分别对TMCR、90%THA、70%THA、50%THA工况下模拟仿真运行,比较和分析两种方案的热经济性,认为优选将给水泵移至7号高加出口给水管道上的方案,该方案在TMCR工况供电热耗率降低3.335 kJ/(kW•h),在变工况运行时随机组负荷的降低热经性增加,50%THA供电热耗率下降值达到5.818 kJ/(kW•h)。In this paper,for the second-circuit regenerative system of AP1000 nuclear power plant,the pressure difference between the two sides of the high-pressure heater(referred to as high-altitude)is large,and two schemes for changing the position of the feed pump are proposed.Considering the reliability problem of the position change of the feed pump,calculate and compare the effective NPSH of the two schemes to ensure the long-term safe operation of the feed pump of the nuclear power unit.The model was built by EBSILON simulation software,and the simulation operation was carried out under TMCR,90%THA,70%THA and 50%THA conditions respectively.The thermal economy of the two schemes was compared and analyzed.It is considered that the feed pump is preferably moved to No.7 high.Adding the scheme on the outlet water supply pipeline,the heating rate of the power supply in the TMCR working condition is reduced by 3.335 kJ/(kW•h).The thermal load of the random group load increases during the variable operating condition.The 50%THA power supply heat consumption rate dropped to 5.818kJ/(kW•h).

关 键 词：给水管路位置 高压加热器 给水泵 热经济性 

分 类 号：TK113[动力工程及工程热物理—热能工程]