胡敬宁,潘金秋,杨孙圣,王俊,肖霞平
HU Jing-ning,PAN Jin-qiu,YANG Sun-sheng,WANG Jun,XIAO Xia-ping (Jiangsu University

• 1:江苏大学

摘要(Abstract)：

为提高反渗透海水淡化高压泵轴向力计算的准确性,应用CFD技术对模型泵内部的流动进行数值模拟,得到不同流量下前后泵腔的静压分布。并对模型泵样机进行试验研究,实测出不同流量下前后泵腔在不同半径处的静压值。应用多项式拟合分别绘制出两种方法下的压力分布曲线,对盖板进行面积分,计算轴向力大小。与通过试验数据计算出的结果相比,数值模拟计算出来的轴向力相对误差在9%以内,而经验公式计算的轴向力相对误差为14%,采用数值模拟方法计算轴向力具有更高的精度,对多级离心泵轴向力平衡的研究具有指导意义。
In order to improve the axial thrust calculation accuracy of high pressure pump for SWRO,the CFD technology was applied to simulate the 3D flow in the pump chamber of the model pump to acquire the distribution of static pressure in different working conditions.Experiment research on the model pump was made.The value of static pressure in the different radius of the pump chamber was measured in the different working conditions.Polynomial fitting was used to map out the pressure distribution curve of numerical simulation and test results.The value of axial thrust was calculated through impeller shroud surface integral.Compared the value of test with simulation,the relative error of axial thrust is less than 9% which is more accurate than empirical formula value of 14%.The numerical calculation has guiding significance to the axial thrust balance of multistage pump.

关键词(KeyWords)： 反渗透海水淡化;高压泵;轴向力;数值模拟;压力分布
SWRO;high pressure pump;axial thrust;numerical simulation;pressure distribution

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑项目(2006BAB03A02);; 江苏省高新技术项目(BG2006024)

作者(Author): 胡敬宁,潘金秋,杨孙圣,王俊,肖霞平
HU Jing-ning,PAN Jin-qiu,YANG Sun-sheng,WANG Jun,XIAO Xia-ping (Jiangsu University

参考文献(References)：

• [1]叶晓琰,许国乐.反渗透海水淡化高压泵优化选择[J].水处理技术,2008,34(9):79-81.
• [2]张楚华,刘正先,古传纲,等.离心叶轮及无叶扩器内湍流的非结构化网格数值解法[J].航空学报,1998,19(5):556-559.
• [3]王文全,张立翔,闫妍,等.节能离心泵全流道内部湍流的动态大涡模拟[J].流体机械,2008,36(1):14-18.
• [4]杨敏官,李辉,高波,等.液下泵内三维湍流流动的数值模拟[J].机械工程学报,2008,44(3):160-165.
• [5]Plutecki Janusz,Skrzypacz Janusz.CFD simulations of3D flowin a pump stator with a spherical surface[J].World Pumps,2003,443:28-31.
• [6]张学静,李德明.多级导叶式离心泵导叶内部CFD计算分析[J].甘肃科学学报,2006,8(3):47-50.
• [7]Yan J,Smith D G.CFD Simulation of 3-DimensionalFlow in Turbomachinery Applications[Z].FLUENTTechnical Notes.Turbomachinery Flow Prediction VI-II,2000,ERCOFTAC Workshop.
• [8]杨敏官,李辉,高波,等.离心泵内流场计算及空间导叶内流动分析[J].流体机械,2008,36(7):16-19.
• [9]关醒凡.现代泵技术手册[M].北京:宇航出版社,1995.