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2011 | 18 | 2 |
Tytuł artykułu

Life tests of a rotary single-stage magnetic-fluid seal for shipbuilding applications

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Use of the magnetic fluid seal technology in water is much more difficult technological problem in comparison to gas or vacuum environment. Some seals constructed up to time been are designed as hybrid, two stage sealing structures with shields or mechanical seals used as protection measures to the magnetic fluid seal. Anyway, there is always problem with immediate contact between magnetic fluid and the environmental liquid. In the paper are presented results of experiments carried out with one stage rotating magnetic fluid seal operating in immediate contact with utility water. The special test procedures have been elaborated and practically used, with the aim to define main characteristics of magnetic fluid seals and to simplify experiments. These characteristics were: critical pressure, critical motion velocity and working life of the seal. Four grades of commercial, silicon based magnetic fluids of hydrophobic properties were tested in a single stage sealing system. The results of tests are presented in the form of tables and diagrams. It is concluded that hydrophobic commercial magnetic fluids could be efficiently used in rotating shaft seals however in a limited range of motion velocity
Słowa kluczowe
Wydawca
-
Rocznik
Tom
18
Numer
2
Opis fizyczny
p.51-59,fig.,ref.
Twórcy
  • Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdansk, Poland
autor
  • Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Al.Mickiewicza 30, 30-059 Krakow, Poland
Bibliografia
  • 1. Szydło, Z., Zachara, B., Ochoński, W.: Ferro-magnetic fluids and their application in machine building (in Polish). 1st Conference on automation of machines, devices and processes, Krynica, 1999
  • 2. Rosensweig, R.E.: Ferrohydrodynamics. Dover Publications, Inc. Mineola, New York, 1997
  • 3. Rinaldi, C., Chaves,A., Elborai, S.,He, X., Zahn, M.: Magnetic fluid rheology and flows. Current Opinion in Colloid & Interface Science Vol.10, Issue 3÷4, October, 2005
  • 4. Orlov, D. B., at al..: Eksperimentalnoe issledovanie resursa magnitozidkostnych uplotnenij pri germetazicii zidkich sred (in Russian). Magnitnaya Gidrodinamika, No 4, 1989.
  • 5. Kurfess,J., Muller, H.K.: Sealing liquids with magnetic fluids. Journal of Magnetism and Magnetic Materials,85,(1990)
  • 6. Vihersalo, J., at al.: Sealing of Liquids with Magnetic Fluid Seals. Proc. of 6th Nordic Symposium on Tribology, NORDTRIB’94, Uppsala, Sweden, 12÷15 June 1994.
  • 7. Chorney, Alvan F.; Mraz, Will.: Hermetic Sealing with Magnetic Fluids. Machine Design; ProQuest Science Journals May 64, 9, 7, 1992
  • 8. Mitamura, Y., Arioka, S., Sakota, K., Azegami, M.: Application of a magnetic fluid seal to rotary blood pumps. J. Phys.: Condens. Matter 20 (2008) 204145
  • 9. Szydło Z., Ochoński W., Zachara B. (inventors): Measurement head for the testing of parameters of ferro-magnetic fluid seals (in Polish). Stanisław Staszic Mining and Metallurgy Academy (AGH), Cracow, Patent application specification No. PL 377598 A1, dated 2005-10-12; published on 2007-04-16. Bulletin of Polish State Patent Office No. 8, 2007
  • 10. Szydło, Z., Matuszewski, L.: Ring thruster – a preliminary optimisation study of ferro-fluid seal and propeller. Polish Maritime Research, Special issue No. S1, 2007
  • 11. Szydło, Z., Matuszewski, L.: The application of magnetic fluids in sealing nodes designed for operation in difficult conditions and in machines used in sea environment. Polish Maritime Research, No. 3, Vol. 15, 2008
  • 12. Szydło, Z.: Tests of a seal with applied magnetic fluids (water – air) –preliminary determination of its life and permissible linear speed (in Polish). Research project No. 6.6.130.261, AGH, 2008, (unpublished)
  • 13. Bonvouloir, J.: Experimental Study of High Speed Sealing Capability of Single stage Ferro fluidic Seal. ASME Transactions, Journal of Tribology, Vol.119, July, 1997
  • 14. Ferrolabs, Inc., Sterling, VA, United States: http://www. ferrolabs.com/ 2010 15. ”ENES”, Zientek P., Warsaw: www.magnesy.pl/ 2010
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-d055c4b3-c6ef-4323-b0cf-4c3f82b5c2a4
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