FEASIBILITY STUDY OF A NOVEL SLEEVE TYPE SWITCHING VALVE
Keywords:
fast switching valve, bistable valve, seat type valve, sleeve valveAbstract
Digital hydraulics became an area of high interest in the last years. Its success depends heavily on cheap and fast switching valves which also feature compact design, low leakage, low electrical current and power requirements, and easy integration into the hydraulic system. This paper presents a feasibility study of a novel magnetically actuated, two coil, bistable 3/2 way sleeve type seat valve. The applicability of the valve was analysed by analytical models, a prototypal design, by measurements of the prototype, and by CFD simulation of flow forces. The sleeve concept turned out to have several inherent problems: insufficient closing-capability due to pressure forces and a pressure dependent clamping of the sleeve; some leakage because of manufacturing tolerances of the contact surfaces, and a complex design with many precise and costly parts to obtain compactness.
Downloads
References
Falkner, J. 2009. Entwicklung eines schnell schaltenden
/2-Wege Sitzventils. Master Thesis, Johannes
Kepler University Linz.
Garstenauer, M. 2001. Theoretical and Experimental
Investigations of a Novel Concept for Hydraulic,
High-speed, Switching Valves. PhD Thesis, Johannes
Kepler University Linz, Austria.
Garstenauer, M. and Scheidl, R. 1999. High-Speed
Switching Valves Actuated by Parametrically Excited
Structures. Bath Workshop on Power Transmission
and Motion Control (PTMC 99), pp. 137-150.
Kallenbach, E. et al. 2003. Elektromagnete Grundlagen,
Berechnung Entwurf und Anwendung, Teubner
Verlag.Laamanen, A. and Linjama, M. (Editors) 2010. Proceedings
of the Third Workshop on Digital Fluid
Power, Tampere, Finland.
Laamanen, A., Linjama, M. and Vilenius, M. 2007.
On the pressure peak minimization in digital hydraulics,
The 10th Scandinavian International Conference
on Fluid Power, SICFP’07, May 21-23,
, Tampere, Finland.
Lauttamus, T., Linjama, M., Nurmia, M. and
Vilenius, M. 2006. A Novel Seat Valve with Reduced
Axial Forces. Proc. Symposium on Power
Transmission and Motion Control (PTMC 2006),
Bath University, England.
Linjama, M. and Laamanen, A. (Editors) 2008. The
First Workshop on Digital Fluid Power, Vol. 3,
Tampere, Finland.
Linjama, M. and Scheidl, R. (Editors) 2010. Special
Issue on Digital Fluid Power, International Journal
of Fluid Power.
Mahrenholz, J. and Lumkes, J. 2010. Analytical
Coupled Modeling and Model Validation of Hydraulic
On/Off Valves. Journal of Dynamic Systems
Measurement and Control, Vol. 132, Issue 1.
Manhartsgruber, B. 2006. A hydraulic control valve
for PWM actuation at 400Hz. Proc. Symposium on
Power Transmission and Motion Control (PTMC
, Bath University, England.
Merritt, H. 1967. Hydraulic Control Systems. John
Wiley & Sons.
Ouyang, X. P., Yang, H. Y., Jiang, H. Y., and Xu, B.,
Simulation of the piezoelectric high-speed on/off
valve. Chinese Science Bulletin, Vol. 53, No. 17,
pp. 2706 - 2711.
Platzer, T., Vael, G. and Achten, P. 2009. The flexible
seat valve. www.innas.com, Innas BV, NL.
Ploeckinger. 2008. Fast Development and Rapid Prototyping
of a Compact Fast 3/2 Way Switching
Valve. Proc. 20th International Conference on Hydraulics
and Pneumatics, ISBN 978-80-02-02074-
, pp. 137 - 143, Prag, Czech Republic.
Scheidl, R. and Winkler, B. (Editors) 2009. The Second
Workshop on Digital Fluid Power, Linz, Austria.
Sturman, O. E. and Masey, S. 1994. Static and Dynamic
Pressure Balance Double Flow Three-Way
Control Valve. U.S. Patent 5,598,871.
Szeri, A. 1998. Fluid Film Lubrication Theory and
Design. Cambridge University Press.
The Autocar. 1919. Autocar Handbook (Ninth ed.).
pp. 36 - 38.
Uusitalo, J. P., Soederlung, L., Kettunen, L., Ahola,
V. and Linjama, M. 2009. Novel Bistable Hammer
Valve for Digital Hydraulics. Proc. 2nd Workshop
on Digital Fluid Power, Linz, Austria.Winkler, B. Development of a Fast Low-cost Switching
Valve for Big Flow Rates. Proc. 3rd FPNI-PhD
Symposium on Fluid Power, Terrassa, Spain.
Winkler, B. 2009. Ploeckinger, A. and Scheidl, R.
A Novel Piloted Fast Switching Multi Poppet
Valve. 2nd Workshop on Digital Fluid Power
(DFP’09), Linz, Austria.
Winkler, B. and Scheidl, R., Development of a Fast
Seat Type Switching Valve for Big Flow Rates.
Proc. Tenth Scandinavian International Conference
on Fluid Power, SICFP’07, Tampere, Finland.
