The Theoretical and Experimental Research on Combination Rotary Sealing of Ferrofluid and Magnetic Grease

Ji, Jun; Xing, Feifei; Du, Jun; Shi, Ning

doi:10.14257/ijca.2016.9.5.08

Cited by 3 publications

(1 citation statement)

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“…A characteristic feature is the possibility to rebuild the liquid ring when the pressure drops below a critical value. This is called the self repair or reseal mechanism [8]. When there is a critical pressure recurrence, the value of this pressure is less than the previous time [9].…”

Section: Introductionmentioning

confidence: 99%

Influence of Selected Parameters on the Reseal Instability Mechanism in Magnetic Fluid Seals

Szczęch¹

2019

JMAG

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Magnetic fluid has many technical applications and many new ones are being developed. One of the applications is in magnetic fluid seals. This publication describes the new phenomenon of the magnetic fluid seal reseal mechanism, discovered while carrying out research. This phenomenon is manifested by the pressure oscillation medium being sealed, which results from the instability (cyclic destruction and rebuild of the liquid ring) in the magnetic fluid seal. It occurs in an inhomogeneous magnetic field and, in this case, is caused by the eccentricity of the seal components. In order to study this mechanism, magnetic fluid characterized by different physical properties was selected. Numerical simulations were performed to determine the magnetic field distribution in the seal. Research results showed the possibility of measuring the eccentricity of the magnetic fluid seal elements. Studies have shown that it is possible to determine the displacement of about 0.01 mm.− 33 − occur. This phenomenon occurred in the case of a nonhomogeneous magnetic field distribution in the ferrofluid. The publication describes the influence of selected parameters on this phenomenon, such as: the magnetic field value, ferrofluid volume, linear velocity of the seal and some physical properties of the ferrofluid.

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Section: Introductionmentioning

confidence: 99%