Flow forces acting on the spool of directional control valve

Janusz Rajda,

Edward Lisowski

Abstrakt

This paper presents a method with the use of CFD analysis for calculating the forces acting on the spool during the flow of working liquid stream through the electro-hydraulic pilot operated directional control valve. The liquid stream flowing through the directional valve causes hydrodynamic response according to the principle of conservation of momentum. Liquid pressure acting on the spool surface affects the forces balance of valve spool as well. An object of the research is the pilot operated directional control valve WEH22 type with flow rate up to 450 dm3/min. For the analysis ANSYS/Fluent software was used.

Słowa kluczowe: CFD modelling, directional control valve, Fluent/Ansys
References

Launder B.E., Spalding D.B., The Numerical Computation of Turbulent Flows. Computer Methods in Applied Mechanics and Engineering, no. 3, 1974, 269-289.

Lisowski E., Domagala M., Determination of static characteristic of direct acting relief valve, Proceedings of the 1st international conference on computational methods in fluid power technology, Melbourne 2003, 211-220.

Lisowski E., Rajda J., CFD analysis of pressure loss during flow by hydraulic directional control valve constructed from logic valves, Energy Conversion and Management 65, 2013, 285-291.

Renn J-C., Kao T-C., Application of CFD to design a power-saving hydraulic directional two-land-four-way-valve, Proceedings of the 1st international conference on computational methods in fluid power technology, Melbourne 2003, 26-28.

Del Vescovo G., Lippolis A., Three-dimensional analysis of flow forces on directional control valves, International Journal of Fluid Power, 4(2), 2003.

ANSYS/Fluent Inc. 13.0 users guide; 2011.

Catalogue Directional spool valve type WEH22 electrically operated, Ponar Wadowice, WK 491 800 01.2013.