摘要
磁力泵磁性联轴器的结构参数和转矩对磁力泵的性能有重要影响。考虑到端部效应,在传统的二维磁场求解分析的基础上对磁性联轴器建立了三维计算模型,利用ANSYS软件进行模拟分析,得到了三维模型总磁感应强度分布,气隙处磁场强度分布等,并对磁性联轴器三维模拟的端部效应进行分析。通过比对表明,由于三维模型考虑端部效应,高温高压磁力泵磁性联轴器的磁转矩模拟计算值比二维的减少21.92%。应用传统经验公式计算的磁转矩损失百分比为14.52%,比三维模拟的损失计算值少7.4个百分点,表明传统经验公式对于端部漏磁所产生的损失考虑不够,设计的磁性联轴器可能因为端部效应而达不到所传递的扭矩。由数值模拟计算的结果,理论上推导出了由于端部漏磁而损失的转矩值,对磁性联轴器的设计和应用提供了参考。
The structure parameter and the torque of the magnetic coupling have significant influence on the performance of magnetic driving pump. Considering the end effect, the three --dimensional calculation model of magnetic coupling was established based on the two-dimensional magnetic field model. The three-dimensional field distribution of magnetic coupling and the magnetic field intensity on the air gap were simulated by the ANSYS software, and the end effect of magnetic coupling had also been analyzed. In comparison with the two models, the result calculated by the three-dimensional magnetic torque of high temperature and high pressure magnetic pump is 21.92% smaller than the two-dimensional one because of the end effect. The magnetic torquc loss percentage is 14.52% by the traditional empirical formula and it＇s 7.4% smaller than that of the three-dimensional simulation, which indicates that the consideration of the end of magnetic flux leakage loss is not enough for the traditional empirical formula, and the （newly designed） magnetic coupling may not provide enough transmission of torque because of the end effect. Based on the numerical simulation results, the loss of torque caused by the end effect is theoretically deduced, providing references for both the design and the practical application of magnetic coupling.
出处
《机械设计与制造》
北大核心
2014年第10期36-39,共4页
Machinery Design & Manufacture
基金
国家科技支撑计划(2013BAK06B02)
江苏省科技支撑技术项目(BE2012147)
关键词
磁力泵
磁性联轴器
转矩
端部效应
Magnetic Driving Pump
Magnetic Coupling
Torque
End Effect
