磁力联轴器涡流损失的数值计算与试验  

Numerical analysis and experiment on eddy current loss in magnetic coupling

作　　者：汪家琼[1,2] 王凯 孙静如[3] 赵瑞杰 童凯 柏宇星 WANG Jiaqiong;WANG Kai;SUN Jingru;ZHAO Ruijie;TONG Kai;BAI Yuxing(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China;Zhenjiang Institute of Fluid Engineering Equipment Technology,Jiangsu University,Zhenjiang,Jiangsu 212013,China;Samsung Electronics Suzhou Company,Suzhou,Jiangsu 215000,China;Autobio Diagnostics Co.Ltd.,Zhengzhou,Henan 450000,China)

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [2]江苏大学镇江流体工程装备技术研究院,江苏镇江212013 [3]苏州三星电子有限公司,江苏苏州215000 [4]郑州安图生物工程股份有限公司,河南郑州450000

出　　处：《排灌机械工程学报》2020年第3期230-235,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：江苏省重点研发计划项目(BE2018085)。

摘　　要：为研究转速、隔离套材料以及转角差对磁力联轴器涡流损失的影响规律,对圆筒型磁力联轴器进行稳态磁场数值计算.计算结果表明:涡流损失随转速的提高成倍增长,转速为3000 r/min时的涡流损失值约为500 r/min时的24倍;材料电导率不同,所制成的隔离套涡流损失也不同,钛板TP340电导率为304SS的1.65倍,其涡流损失为后者的1.61倍;在1个磁极周期内,转角差增大1°,涡流损失值约增大1%.对该磁转子进行试验测试,结果表明:在转速分别为3000,500 r/min条件下,304SS隔离套的涡流损失之比是23.0,而TP340隔离套的涡流损失之比为24.6;涡流损失随耦合长度减小而减小,且在高速下减小更多,耦合长度每减小10 mm,转速500 r/min时涡流损失值约下降3.6%,转速3000 r/min时涡流损失值约下降10%.对比数值计算与试验结果,其能量损失变化趋势较一致.The transient magnetic field of a cylindrical magnetic coupling was numerically simulated to obtain the influencing rules of speed,containment can material and slip angle on eddy current loss in magnetic couplings.It is shown that the eddy current loss increases in several folds with increasing rotational speed,at 3000 r/min,for example,it is about 24 times that at 500 r/min.Additionally,the loss depends on the conductivity of containment can material.The conductivity of titanium plate TP340 is 1.65 times that of 304SS,as a result,the eddy current loss of TP340 is 1.61 times that of 304SS.In one magnetic pole period,a 1°slip angle increase leads to an about 1%eddy current loss rise.The experimental results show that the ratio of the eddy current loss in the containment can of 304SS at 3000 r/min to that at 500 r/min is 23.0,while the ratio is 24.6 in the containment can of TP340.The eddy current loss is decreased with decreasing coupling length,especially at high speeds.When the coupling length is decreased by 10 mm,the eddy current loss is decreased by 3.6%at 500 r/min.The eddy current loss is decreased by about 10%at 3000 r/min.Compared the experimental results,the numerically simulated eddy current losses are consistent with the former.

关 键 词：磁力联轴器 涡流损失 磁场 数值模拟 

分 类 号：TH133[机械工程—机械制造及自动化] S277.9[农业科学—农业水土工程]