NEW DESIGNS OF MAGNETIC FLUID SEALS FOR RECIPROCATING MOTION

Leszek Matuszewski; Piotr Bela

doi:10.2478/pomr-2021-0057

NEW DESIGNS OF MAGNETIC FLUID SEALS FOR RECIPROCATING MOTION

Abstrakt

T he 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. T he 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.

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Wersja publikacji: Accepted albo Published Version
DOI:: Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.2478/pomr-2021-0057
Licencja: otwiera się w nowej karcie

Słowa kluczowe

MAGNETIC FLUID SEAL, RECIPROCATING MOTION, CRITICAL PRESSURE, SEALING MECHANISM, FAILURE REASON OF THE SEAL, NEW SEAL DESIGNS

Informacje szczegółowe

Kategoria:: Publikacja w czasopiśmie
Typ:: artykuły w czasopismach
Opublikowano w:: Polish Maritime Research nr 28, strony 151 - 159,
ISSN: 1233-2585
Język:: angielski
Rok wydania:: 2021
Opis bibliograficzny:: Matuszewski L., Bela P.: NEW DESIGNS OF MAGNETIC FLUID SEALS FOR RECIPROCATING MOTION// Polish Maritime Research -Vol. 28,iss. 4(112) (2021), s.151-159
DOI:: Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.2478/pomr-2021-0057
Weryfikacja:: Politechnika Gdańska