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作 者:王延鹏 朱荣生[1,3] 智一凡 付强 王秀礼[1,3] WANG Yan-peng;ZHU Rong-sheng;ZHI Yi-fan;FU Qiang;WANG Xiu-li(National Research Center of Pumps,Jiangsu University,Zhenjiang 212001,China;China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China;Joint Laboratory of Intelligent Diagnosis Operation and Maintenance of Nuclear Power Pumps and Devices,Zhenjiang 212013,China)
机构地区:[1]江苏大学流体机械技术研究中心,江苏镇江212001 [2]中国核电工程有限公司,北京100840 [3]核电泵及装置智能诊断运维联合实验室,江苏镇江212013
出 处:《机电工程》2023年第5期764-772,共9页Journal of Mechanical & Electrical Engineering
基 金:国家自然科学基金资助项目(U20A20292)。
摘 要:在某核电站海水循环泵实际运行中,其选型扬程高于实际需要扬程的上限值,针对这一问题,以原模型额定工况点扬程的80%为变型目标,提出了一种基于多参数组合变型的叶轮改造设计方法。首先,在原有模型的基础上,选择叶轮外径、叶片出口安放角、叶片包角和叶轮出口宽度为研究因素,通过基于计算流体力学(CFD)数值模拟的正交试验设计,进行了变型参数分析;然后,总结了各参数与海水循环泵性能之间的关系,进行了变型方案设计,并比较了单因素变型设计与多因素耦合变型设计之间的区别,得到了主要参数的组合变型方案;最后,通过适配其他变型参数,得到了最优变型组合方案,分析了降低扬程和提升效率的流场特点,得到了多参数组合变型对海水循环泵叶轮性能的影响规律。研究结果表明:在额定工况点,变型后的海水循环泵扬程降低了18.57%,效率提升了0.63%,相比仅改变叶轮外径和仅改变叶片出口安放角降低扬程,循环泵的效率分别提高了7.52%和3.27%。Aiming at the problem that the selected head of the seawater circulating pump of a nuclear power plant was higher than the upper limit of the actual required head,a transformation method based on the multi-parameter combined variant design of the impeller was proposed with 80%of the head of the rated working condition of the original model as the variant target.On the basis of the original model,80%of the rated working point head of the original model was used as the variant target.Firstly,the outer diameter of the impeller,the installation angle of the blade outlet,the blade wrapping angle and the impeller outlet width were selected as the research factors,and the variant parameters were analyzed by orthogonal experimental design based on computational fluid dynamics(CFD)numerical simulation.Then,the relationship between each parameter and the performance of the seawater circulating pump was summarized,the variant scheme design was carried out,and the difference between the single-factor variant design and the multi-factor coupling variant design was compared,and the combined variant scheme of the main parameters was obtained.Finally,by adapting to other variant parameters,the variant combination was further optimized.The flow field characteristics of reducing the lift and improving the efficiency were analyzed,and the influence law of multi-parameter combination on the performance of seawater circulating pump impeller was obtained.The results show that the head of the deformed seawater circulating pump is reduced by 18.57%and the efficiency is increased by 0.63%,which is respectively 7.52%and 3.27%higher than that when the head is reduced by only changing the outer diameter of the impeller and only changing the blade outlet angle.
关 键 词:循环泵 叶轮外径 叶片出口安放角 计算流体力学 正交试验 数值模拟 泵的扬程和效率
分 类 号:TH31[机械工程—机械制造及自动化] TM623.9[电气工程—电力系统及自动化]
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