大连理工大学学报2017，Vol.57Issue(5)：453-458,6.DOI:10.7511/dllgxb201705003
入口非均匀流对核主泵性能影响研究
Research on effects of non-uniform suction flow on performance in reactor coolant pump
摘要
Abstract
Reactor coolant pump (RCP )of CAP1400 reactor coolant system is designed welded directly to the steam generator (SG)channel head,which makes the flow field in the SG channel head outlet nozzle non-uniform. To study the influence of inflow distortion on RCP performances, comparisons of energy, hydrodynamics and cavitation characteristics between non-uniform and uniform inflow conditions are carried out by CFD method through modelling integrally the channel head of SG and RCP impellers.Calculation results show that at 0.7Q0-1.2Q0 the inflow distortion reduces pump head and impeller torque by 1.8％-5.1％ and 1.9％-6.4％ respectively,and efficiency is not affected.With the decrease of head,axial loading drops slightly whereas radial loading increases significantly under non-uniform suction flow.As cavitation occurs,the critical NPSH of the pump increases,anti-cavitation performance is reduced and cavitation area appears obvious asymmetric.关键词
核主泵/非均匀入流/能量特性/径向力/空化性能Key words
reactor coolant pump/non-uniform suction flow/energy characteristic/radial loading/cavitation characteristic分类
机械制造引用本文复制引用
王巍,王亚云,卢盛鹏,侯腾飞,羿琦,王晓放..入口非均匀流对核主泵性能影响研究[J].大连理工大学学报,2017,57(5):453-458,6.基金项目
"九七三"国家重点研究发展计划资助项目(2015CB057301). （2015CB057301）
