磁力泵磁力联轴器传动的影响因素

为研究磁力泵磁力联轴器的传动性能影响因素,基于Ansoft-Maxwell软件对设计模型进行数值计算,定性分析模型在不同磁极对数和磁钢间隙时对磁转子传动性能的影响.以磁转矩与磁涡流损耗作为评价指标,分别设计4～26对不同排列方式的磁块,并对磁转子的磁场分布进行分析,求得不同磁极对数下磁转子的磁转矩峰值、磁涡流损耗平均值以及离套所受内外磁块的合力F的大小,得到设计模型在16对时磁转矩与磁涡损达到最佳值.以16对磁极对数磁转子为例,单一改变相邻磁钢间的间隙度数,分别从1°,2°,3°,4°共4种不同情况下,研究间隙大小对磁转矩与磁涡流损耗的影响规律,结果表明,增大磁钢间隙会导致磁转矩与磁涡流损耗有小幅度减小,但在间隙中间加入基体A3钢且保持其他条件不变时,会导致磁涡流损耗值增大1.2倍左右.研究的结果可为磁力泵磁转子参数化设计提供一定参考.

Influencing factors of magnetic coupling transmission of magnetic pump

In order to study the influence factors of transmission performance of magnetic coupling of magnetic pump, the design model is numerically calculated based on Ansoft-Maxwell software, and the influence of the model on the transmission performance of magnetic rotor under different magnetic steel gap is qualitatively analyzed. Taking the magnetic torque and magnetic eddy current loss as the evaluation indexes, 4-26 pairs of magnetic blocks with different arrangement are designed respectively, and the magnetic field distribution of magnetic rotor is analyzed. The peak value of the magnetic torque, the average value of the eddy current loss and the resultant force(F_n)of the inner and outer magnetic blocks are obtained. It is concluded that the magnetic torque and eddy loss of the model reach the optimal value at 16 pairs. Taking 16 pairs of log-pole magnetic rotors as an example, the influence law of clearance size on transmission torque and magnetic vortex loss was investigated under the condition of changing the clearance degree of adjacent magnetic steel: 1°, 2°, 3° and 4°, respectively. The results show that increasing the magnetic steel clearance will reduce the magnetic torque and magnetic eddy current loss slightly, but when the matrix A3 steel is added in the middle of the clearance and other conditions remain unchanged, the magnetic eddy current loss will increase by about 1.2 times. The results can provide a useful reference for the parametric design of magnetic rotor of magnetic pump.