<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The operating conditions of magnetic fluid seals during reciprocating motion are so different from those observed in rotating motion that the use of their conventional structures for reciprocating motion seals yields no good results. The analysis of the sealing mechanism of magnetic fluid seals in reciprocating motion shows that the operation of these seals is affected by the carry-over phenomenon and magnetic fluid film deformation in the sealing gap, which depends on the velocity of the reciprocating motion. The reduced amount of magnetic fluid in the sealing gap caused by the reciprocating motion of the shaft is the main reason for seal failures. The paper presents a short characterisation of magnetic fluid sealing technology, the principle of sealing, the operation of the magnetic fluid and the seal failure mechanism in linear motion of the shaft. Moreover, some new structural designs of hybrid seals, being combinations of typical hydraulic seals with magnetic fluid seals for reciprocating motion, and some examples of magnetic fluid sealing structures for hydraulic cylinders and piston compressors which have practical application values are presented.</p>
</abstract>

The operating conditions of magnetic fluid seals during reciprocating motion are so different from those observed in rotating motion that the use of their conventional structures for reciprocating motion seals yields no good results. The analysis of the sealing mechanism of magnetic fluid seals in reciprocating motion shows that the operation of these seals is affected by the carry-over phenomenon and magnetic fluid film deformation in the sealing gap, which depends on the velocity of the reciprocating motion. The reduced amount of magnetic fluid in the sealing gap caused by the reciprocating motion of the shaft is the main reason for seal failures. The paper presents a short characterisation of magnetic fluid sealing technology, the principle of sealing, the operation of the magnetic fluid and the seal failure mechanism in linear motion of the shaft. Moreover, some new structural designs of hybrid seals, being combinations of typical hydraulic seals with magnetic fluid seals for reciprocating motion, and some examples of magnetic fluid sealing structures for hydraulic cylinders and piston compressors which have practical application values are presented.

New Designs of Magnetic Fluid Seals for Reciprocating Motion

Polish Maritime Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"New Designs of Magnetic Fluid Seals for Reciprocating Motion"}

The operating conditions of magnetic fluid seals during reciprocating motion are so different from those observed in rotating motion that the use of their...

New Designs of Magnetic Fluid Seals for Reciprocating Motion

Publié en ligne: 01 janv. 2022

Pages: 151 - 159

DOI: https://doi.org/10.2478/pomr-2021-0057

Mots clés
magnetic fluid seal, reciprocating motion, critical pressure, sealing mechanism, failure reason of the seal, new seal designs

© 2021 Mathematical Institute, Slovak Academy of Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

New Designs of Magnetic Fluid Seals for Reciprocating Motion

Publié en ligne: 01 janv. 2022

Pages: 151 - 159

DOI: https://doi.org/10.2478/pomr-2021-0057

Mots clésmagnetic fluid seal, reciprocating motion, critical pressure, sealing mechanism, failure reason of the seal, new seal designs

© 2021 Mathematical Institute, Slovak Academy of Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
magnetic fluid seal, reciprocating motion, critical pressure, sealing mechanism, failure reason of the seal, new seal designs