双吸泵吸入室挡板的数值模拟和正交试验

王洋; 吕忠斌; 曹璞钰; 刘洁琼; 梁龙一

doi:10.3969/j.issn.1671-7775.2014.05.006

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江苏大学学报（自然科学版） ›› 2014, Vol. 35 ›› Issue (5) : 525-530. DOI: 10.3969/j.issn.1671-7775.2014.05.006

论文

双吸泵吸入室挡板的数值模拟和正交试验

作者信息 +

Numerical simulation and orthogonal test of baffle in suction chamber of doublesuction pump

Author information +

文章历史 +

摘要

为了研究半螺旋型吸入室中挡板的结构参数对双吸泵性能的影响,以输油双吸式离心泵为研究对象,利用流场分析软件AnsysCFX对其进行数值模拟．选取半螺旋型吸入室中挡板厚度S、挡板水平方向长度L、挡板出口与水平方向夹角θ为试验因素,每个因素选取2个水平,建立L4(23)正交试验方案．按照试验方案修改双吸泵水力模型,分别在0.6QN,0.8QN,1.0QN和1.2QN工况下进行试验模型的数值模拟,得到双吸泵挡板结构的最佳参数组合．按照最佳挡板尺寸修改吸入室,将优化后水泵外特性试验结果与原泵的进行比较分析．结果表明:影响双吸泵性能的主要挡板结构参数是其厚度;优化吸入室后水泵效率较原泵提高近2％．

Abstract

To investigate the influence of structural parameters of the baffle in semivolute suction chamber on the performance of doublesuction pump, a doublesuction centrifugal pump for transporting oil was numerically simulated to analyze the flow field with AnsysCFX software. The baffle thickness of S of the semivolute suction chamber, the length of L in horizontal direction and the included angle of θ between exit and horizontal direction were selected as experimental factors. Two levels were selected for every experimental factor to establish orthogonal test scheme of L4（23）. The computation models of doublesuction pump were modified according to the scheme tab. The numerical simulation of test models was carried out under four operating points of 0.6QN，0.8QN，1.0QN and 1.2QN to obtain the optimum assembly of baffle structural parameters. The suction chamber was modified based on the optimum baffle size to compare the optimized pump with the original pump. The results show that the main structural parameter of baffle thickness is the key influence factor on the influent performance of doublesuction pump, and the efficiency of optimized pump is nearly increased by 2% than that of original pump.

导出引用

王洋, 吕忠斌, 曹璞钰, 等. 双吸泵吸入室挡板的数值模拟和正交试验[J]. 江苏大学学报（自然科学版）, 2014, 35(5): 525-530 https://doi.org/10.3969/j.issn.1671-7775.2014.05.006

WANG Yang, 吕Zhong-Bin , CAO Pu-Yu, et al. Numerical simulation and orthogonal test of baffle in suction chamber of doublesuction pump[J]. Journal of Jiangsu University(Natural Science Edition), 2014, 35(5): 525-530 https://doi.org/10.3969/j.issn.1671-7775.2014.05.006

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