Experimental study of self-healing of symmetric single-source magneto-fluid seals with large clearances

Abstract

In order to reduce the leakage of vacuum sealing equipment due to vibration and effectively improve the self-healing (SH) performance of magneto-fluid seals (MFS), a symmetric single-source MFS structure is proposed. Experimental research was done to determine how the structure's SH capabilities were affected by various radial and axial sealing clearances (SC), the number of axial and radial pole teeth (PT), step height, and PT positions. According to findings, symmetric MFS' ability to SH gradually decreases as SC increases. As the symmetric MFS's axial teeth count increases, its SH capabilities progressively get better. When the step height and the number of radial PT were increased, respectively, the SH ability first trended downward before increasing. When the PT are all on the shaft, the MFS's capacity for SH is at its peak.