Torque calculation of magnetic couplings
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I would like to ask the experts: In the torque calculation for magnetic couplings on page P855 of the \"Chemical Engineering Equipment Design Manual\", once it is determined that the pole material is SmCo (a rare earth metal alloy), how should the magnetic flux density of the poles be determined? In magnetic sealing: how is the thickness of the isolation seal cover determined (under different pressures and temperatures of the container)? How much has the pressure decreased from inside the container to the isolation seal?
Regarding the thickness of the isolation sleeve, the original poster can refer to this article: \"Magnetic-Driven Sealing Devices and Their Applications\" written by Yan Kejing. The formula is s > (d*p)/(2*h-p), where s represents the thickness, d the inner diameter, stress the allowable stress, h the weld coefficient, and p the design pressure. I’ve assigned these letters myself; it’s difficult to type Greek letters.