西华大学学报（自然科学版）2025，Vol.44Issue(2)：1-10,10.DOI:10.12198/j.issn.1673-159X.5516
考虑预旋特性的核主泵叶片安放角修正策略
Analysis on the Optimization Strategy of Nuclear Main Pump Hydraulic Performance Considering Pre-swirling Characteristics
摘要
Abstract
To explore the influence mechanism of pre-swirling characteristics on the rotation field of the nuclear main pump,the primary system of the"Hualong one"reactor is taken as the research object,and the correction strategy of impeller blade placement angle is proposed through numerical simulation analys-is.The results show that the main pump inlet produces a reverse swirl,and along the flow direction,the reg-ularity of swirls is enhanced.The negative pre-swirling becomes relatively stable near the impeller inlet.The helix angle of the pre-swirling ranges from-15°to 13°,and the average swirl strength is 3.5°.The pre-swirling increases the inflow angle of the liquid.When the inflow Angle increases,the liquid flow direction deflects to the working surface,which aggravates the separation flow loss at the inlet of the working sur-face.According to the determined value 0.2 of inlet velocity-moment to adjust the impeller inlet blade placement angle,the leading edge flow separation of the blade was eliminated.At the same time,the blade outlet angle was adjusted accordingly,which improved the pressure energy conversion efficiency of the im-peller.关键词
核主泵/管路系统/预旋特性/叶片安放角Key words
nuclear main pump/pipeline system/pre-swirling characteristics/blade placement angle分类
核科学引用本文复制引用
黎义斌,牛藤,周欢,杨从新,郭艳磊,王秀勇..考虑预旋特性的核主泵叶片安放角修正策略[J].西华大学学报（自然科学版）,2025,44(2):1-10,10.基金项目
甘肃省教育厅高校科研创新平台重大培育项目(2024CXPT-09). （2024CXPT-09）
