挖泥船泥泵泵轴轴向力和径向力的计算方法综述  

Review of calculation methods for dredge pump′s shaft axial and radial thrust

作　　者：陈功[1] 郑琳珠[1] 钱胜君[1] 庄海飞[1] 胡京招[1] 

机构地区：[1]中交疏浚技术装备国家工程研究中心,上海201208

出　　处：《中国港湾建设》2016年第1期63-67,共5页China Harbour Engineering

摘　　要：泥泵作为离心泵的一种，在挖泥船疏浚作业中，断轴的现象时有发生。为了避免断轴的发生，在设计时需准确计算泵轴所受轴向力和径向力。文章对国内外关于离心泵泵轴轴向力和径向力的产生原因、危害以及计算方法的研究进行归纳整理，发现离心泵泵轴的水力径向力的稳定部分可以由Stepanoff公式较准确的估计，并已被数值计算和试验证明，而数值模拟显示不稳定径向力的最大值大约是稳定径向力大小的40％～70％；离心泵轴向力的经验公式缺乏试验或数值模拟的验证，只能做参考；基于CFD软件计算径向力和轴向力的方法得到了试验的验证，成为求解泵轴受力计算的有效工具。The dredge pump as a kind of centrifugal pump, frequently occurred broken shaft during dredging operation. In order to avoid this phenomenon, the pump shaft＇s axial and radial thrust should be calculated accurately. We summarized domestic and foreign researches about the causes, harm and calculation methods of centrifugal pump, found that the stable part of the hydraulic radial force of centrifugal pump shaft can be accurately estimated by Stepanoff formula, and had been proven by numerical calculation and test. Numerical simulation show the maximum instable part of radial force was about 40 % to 70 % the mount of the stable part; empirical formula of axial thrust was just for reference because of its lack of test or numerical simulation validation and great difference between experimental and formula value, the CFD software used for calculating the shaft axial and radial thrust was validated by the experiment, it is an effective tool for pump shaft thrust calculation.

关 键 词：泥泵 泵轴 轴向力 径向力 CFD 

分 类 号：U615.351[交通运输工程—船舶及航道工程]