New designs of magnetic fluid seals for reciprocating motion

• Autorzy: Matuszewski Leszek , Bela Piotr

Identyfikatory

DOI

10.2478/pomr-2021-0057

• Języki publikacji: EN

Abstrakty

EN

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 havepractical application values are presented.

Słowa kluczowe

EN

magnetic fluid seal; reciprocating motion; critical pressure; sealing mechanism; failure reason of the seal; new seal designs

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2021
• Tom: nr 4
• Strony: 151--159
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Matuszewski Leszek

• Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Bela Piotr

• Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).