磁流体密封的磁场有限元分析

In this paper the principle of magnetic fluid seal is discussed. Base on the finite element software ANSYS, the magnetic field of magnetic fluid sealing device with three slot four pole teeth is analyzed. The results show that the difference between the maximum and minimum intensity of magnetic field in the area near the shaft decide sealing capacity of sealing device; the gap of seal should not over 0.3mm.