运行参数对曲臂式汽水分离器性能的影响机理  

Influence Mechanism of Operating Parameters on Performance of Curved-arm Steam Water Separator

作　　者：杨雪龙 朱陈兵 邹道杭 牟介刚 YANG Xuelong;ZHU Chenbing;ZOU Daohang;MOU Jiegang(College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量大学计量测试工程学院,杭州310018

出　　处：《动力工程学报》2023年第8期1015-1021,1046,共8页Journal of Chinese Society of Power Engineering

基　　金：浙江省科技计划资助项目(2021C01052)。

摘　　要：采用计算流体动力学技术计算分析了蒸汽负荷、循环倍率和水位等运行参数对CANDU6堆蒸汽发生器用曲臂式汽水分离器性能的影响。选取水滴粒径x为100μm、200μm和300μm,采用欧拉双流体模型模拟分离器内汽水两相流动。结果表明:运行参数对分离器性能的影响趋势在不同粒径下基本一致,满足粒径无关性;当x=300μm时能够获得较为准确的分离效率和压损值;随着蒸汽负荷增加,分离效率升高,出口湿度降低,而循环倍率和水位对分离效率和出口湿度的影响则与之相反;随着蒸汽负荷或循环倍率的增加,压损升高,压损系数却降低,而水位对压损和压损系数的影响可以忽略。The effects of operating parameters,such as steam load,circulation ratio and water level,on the performance of curved-arm steam water separator for steam generator of CANDU6reactor were calculated and analyzed by computational fluid dynamics(CFD)technology.Euler two fluid model and three sizes of the water droplets,which were 100μm,200μm and 300μm respectively,were used to simulate the twophase flow of steam and water in the separator.Results show that the influential trend of operating parameters on separation performance is basically identical for all the three droplet sizes,the droplet size independence law applies.When the droplet size is 300μm,more accurate separation efficiency and pressure loss value can be obtained.As the steam load is increased,the separation efficiency increases and the outlet humidity decreases,while the circulation ratio and the water level result an opposite influential trend.The pressure loss increases as steam load or circulation ratio increases,but the pressure loss coefficient decreases,the influence of water level on pressure loss and pressure loss coefficient can be ignored.

关 键 词：CANDU6堆 蒸汽发生器 汽水分离器 运行参数 水滴粒径 CFD 

分 类 号：TL334[核科学技术—核技术及应用]