用正交试验研究分流叶片主要参数对性能影响  

Orthogonal experimental study effect of main geometry factors of splitter blades on pump performance

作　　者：袁寿其[1] 张金凤[1] 袁建平[1] 付跃登[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《排灌机械》2008年第2期1-5,共5页Drainage and Irrigation Machinery

基　　金：国家自然科学基金资助项目(50649029);高等学校博士点基金资助项目(20050299006)

摘　　要：选择分流叶片周向偏置角度、偏转角、分流叶片进口直径以及叶片数4因素,每个因素各取3水平,制定了L9(34)正交试验方案.采用熔丝沉积成形(Fused Deposition Modeling,FDM)工艺制作叶轮,并同时制作了不含分流叶片的三个叶片数的叶轮.对其进行外特性试验研究,结果表明:添加分流叶片后对性能的共同影响趋势是泵的Q-H曲线更加平坦,Q-η曲线向大流量偏移,高效区变宽,Q-P曲线更加陡峭.分析了各个因素水平对性能的影响趋势,经过极差R分析得出各因素对扬程和效率影响的主次顺序.还针对大流量点的试验结果进行分析,发现其各个因素对性能的影响顺序不变,性能达标的方案数增多,说明在同样设计条件下,带分流叶片离心泵更适合于大流量工况运行.A L9 （3^4） orthogonal experiment was designed with four factors and three values respectively, including splitters bias angle in peripheral direction, deflection angle, its inlet diameter and blades numbers. Fused Deposition Modeling craft was adopted to make the nine impellers and three impellers with different blade numbers and without splitter blades. Performance tests were conducted. The test results show the common effects of splitter blades as follows： the curves of Q -H are more fiat, the curves of Q - ηmove to the larger flow rate, the district with high is efficient broadened, and the curves of Q - P are steeper. By range analysis, the primary and secondary sequence of the four design parameters of splitter blades were obtained, meanwhile the test results in larger flow rate were also analyzed, which has the same primary and secondary sequence, and more schemes that can meet the design request. It shows that the pump with splitter blades can be operated in larger flow rate.

关 键 词：离心泵 低比速 分流叶片 正交试验 熔丝沉积成形 

分 类 号：TH137.22[机械工程—机械制造及自动化]