基于正交试验的纸浆泵叶轮排气孔参数设计及试验  

Design and Test of Degas Hole on Impeller in Pulp Pump based on Orthogonal Experiment

作　　者：叶道星[1] 赖喜德 李红[3] YE Dao-xing;LAI Xi-de;LI Hong(Key Laboratory of Fluid and Power Machinery,Ministry of Education,School of Energy and Environment,Xihua University,Chengdu,China,Post Code ： 610039;School of Energy and Environment,Xihua University,Chengdu,China,Post Code ： 610039;National Research Center of Pumps,Jiangsu University,Zhenjiang,China,Post Code ： 212013)

机构地区：[1]西华大学流体及动力机械教育部重点实验室,四川成都610039 [2]西华大学能源与动力工程学院,四川成都610039 [3]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013

出　　处：《热能动力工程》2018年第7期44-48,共5页Journal of Engineering for Thermal Energy and Power

基　　金：四川省教育厅项目(172467);西华大学校重点基金(Z1620408);西华大学青年学者后备人才项目~~

摘　　要：采用正交试验的方法对纸浆泵叶轮上排气孔参数进行设计。通过数值模拟性能预测、研究分析,确定排气孔参数对性能影响的主次关系。采用综合性能评价函数确定排气孔参数最佳方案：排气孔个数Zd为8,直径D为20 mm,径向距离R1为130 mm,周向位置θ为15°。如通过样机试验得到优化后纸浆泵的性能特性,研究发现流量在0.8Q、1.0Q、1.2Q时,优化后的扬程、水力效率和气液分离效率分别提高了5%、7%和20%,排气孔参数优化后气液分离效果尤为明显,满足设计要求。The parameters of degas hole on impeller were optimized by the orthogonal test. 4 factors, degas hole number Za, diameter of degas hole D, Radial distance, R1, and circumferential position 0, were tested with each factor having 3 different levels. Based on L9 （34） orthogonal experiment,9 cases were designed. The best case was chosen after orthogonal test analysis and experimentally tested according to the numerical results of pulp pump model. The head, hydraulic efficiency and gas-liquid separation were improved by 5 % ,7% and 20% at 0. 8 Q, 1.0Q and 1.2Q flow rates, respectively, compared to those before optimization.

关 键 词：设计 正交试验 气液分离 排气孔 纸浆泵 

分 类 号：TH31[机械工程—机械制造及自动化]