核电汽水分离再热器内部循环蒸汽流动特性研究  

Study on characteristics of internal cycle steam flow in moisture separator and reheater of nuclear power plant

作　　者：杨雨峤 袁益超[1] YANG Yu-qiao;YUAN Yi-chao(Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《能源工程》2020年第3期63-70,共8页Energy Engineering

摘　　要：利用计算流体力学(CFD)软件对循环蒸汽在一种典型结构汽水分离再热器(MSR)内的流动进行了数值模拟,分析造成分离器入口汽流分布不均匀的原因,提出更加合理的多孔板开孔率的布置方案,使得分离器入口的速度偏差处于0.9~1.1之间。结果表明:MSR进汽分配装置进汽口的流量不均和多孔板上游环形腔体的结构是造成分离器入口汽流分布不均的原因;在不增加蒸汽通过MSR压力损失的前提下,通过调整多孔板不同区域的开孔率,在分离器入口可获得更加均匀的汽流。The computational fluid dynamics(CFD)software was used to numerically simulate the flow of cycle steam in a typical structure moisture separator and reheater(MSR).The reason for the nonuniform distribution of steam flow at the inlet of the separator was analyzed,and a structural optimization scheme by changing porosity of the perforated plate was proposed,the variation of steam velocities at inlet of separator were reduced to 0.9~1.1 m/s after optimization.Results showed that the nonuniformity in steam flow distribution atthe inlet of MSR and the structure of the annular cavity of the upstream porous plate resulted in the nonuniform distribution of the inlet steam flow.The nonuniformity can be mediated by adjusting the open porosity of different regions of the perforated plate without sacrificing the steam pressure loss through MSR.

关 键 词：汽水分离再热器 速度分布 多孔板 

分 类 号：TK224.2[动力工程及工程热物理—动力机械及工程]