进口预旋对低比速离心泵无过载性能的影响  

Effect of Prewhirl Flow on Non-overload Performance of Low-specific-speed Centrifugal Pumps

作　　者：施卫东[1] 李辉[1] 陆伟刚[1] 戴吉隆 李绪良 

机构地区：[1]江苏大学流体机械工程技术研究中心,镇江212013 [2]海城三鱼泵业有限公司,海城114216

出　　处：《农业机械学报》2013年第5期50-54,112,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(51279069);江苏高等学校优秀科技创新团队资助项目(苏教科(2009)10号);江苏高校优势学科建设工程资助项目

摘　　要：采用径向前置导叶实现预旋,将叶轮与前置导叶结合进行研究,推导了有预旋离心泵的最大轴功率及其对应流量的计算公式。分析了导叶几何参数对泵理论扬程曲线、功率曲线、理论最大流量、最大轴功率及最大轴功率对应流量的影响。利用CFD软件对几何参数不同的8组方案进行数值模拟,将模拟结果与公式计算结果进行对比。验证了公式的正确性,该公式对无过载离心泵设计具有指导作用。Both the impeller and inlet guided vanes were studied. Considering the inlet prewhirl by using radial inlet guided vanes, the calculation formula of the pump＇s maximum shaft power and its corresponding flow rate were deduced. The effects of inlet guided vanes＇ geometric parameters on theoretical head curves, power curves, theoretical maximum flow rate, maximum shaft power and its corresponding flow rate were also analyzed. Then eight schemes with different geometric parameters were numerically simulated by using CFD software, the validity of the formula was verified by comparing numerical result and formula calculation, indicating that it can provide guidance for the design of non-overload centrifugal pump.

关 键 词：离心泵 预旋 前置导叶 无过载 

分 类 号：TH311[机械工程—机械制造及自动化]