“Flow Characteristics and Sizing of Annular Seat Valves for Digital Displacement Machines”
Authors: Christian Nørgård, Michael Møller Bech, Torben Ole Andersen and Jeppe Hals Christensen,Affiliation: Aalborg University
Reference: 2018, Vol 39, No 1, pp. 23-35.
Keywords: Digital fluid power, CFD analysis, active check-valves, annular seat valve
Abstract: This paper investigates the steady-state flow characteristics and power losses of annular seat valves for digital displacement machines. Annular seat valves are promising candidates for active check-valves used in digital displacement fluid power machinery which excels in efficiency in a broad operating range. To achieve high machine efficiency, the valve flow losses and the required electrical power needed for valve switching should be low. The annular valve plunger geometry, of a valve prototype developed for digital displacement machines, is parametrized by three parameters: stroke length, seat radius and seat width. The steady-state flow characteristics are analyzed using static axi-symmetric computational fluid dynamics. The pressure drops and flow forces are mapped in the valve design space for several different flow rates. The simulated results are compared against measurements using a valve prototype. Using the simulated maps to estimate the flow power losses and a simple generic model to estimate the electric power losses, both during digital displacement operation, optimal designs of annular seat valves, with respect to valve power losses, are derived under several different operating conditions.
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DOI: 10.4173/mic.2018.1.3DOI forward links to this article:
| [1] Niels C. Bender, Torben Ole Andersen and Henrik C. Pedersen (2019), doi:10.4173/mic.2019.2.1 |
| [2] Christian Noergaard, Esben L. Madsen, Janus M. T. Joergensen, Jeppe H. Christensen and Michael M. Bech (2018), doi:10.1109/TMECH.2018.2866914 |
| [3] Jianfeng Li, Mingqing Xiao, Yao Sun, Guangshu Nie, Yaojun Chen and Xilang Tang (2020), doi:10.1109/ACCESS.2020.2982941 |
[1] Heikkila, M. (2016). Heikkila, M, Energy Efficient Boom Actuation Using a Digital Hydraulic Power Management System. Ph.D. thesis, Tampere University of Technology. .
[2] Heikkila, M., Tammisto, J., Huova, M., Huhtala, K., and Linjama, M. (2010). Heikkila, M, , Tammisto, J., Huova, M., Huhtala, K., and Linjama, M. Experimental evaluation of a piston-type digital pump-motor-transformer with two independent outlets. In Proc. of ASME/Bath Fluid Power and Motion Control. Bath, UK, pages 83--97. .
[3] Holland, M.A., Merrill, K.J., and Lumkes, J.H. (2011). Holland, M, A., Merrill, K.J., and Lumkes, J.H. Experimental evaluation of digital pump/motor operating strategies with a single-piston pump/motor. In Proc. of the 52^nd National Conference on Fluid Power. Las Vegas, US. .
[4] Lauttamus, T., Linjama, M., Nurmia, M., and Vilenius, M. (2007). Lauttamus, T, , Linjama, M., Nurmia, M., and Vilenius, M. A novel seat valve with reduced axial forces. In Proc. of Power Transmission And Motion Control. Bath, UK, pages 415--427. .
[5] Linjama, M. and Huhtala, K. (2009). Linjama, M, and Huhtala, K. Digital pump-motor with independent outlets. In Proc. of the 11^th Scandinavian International Conference on Fluid Power. Linkobing , Sweden. .
[6] Merrill, K.J., Holland, M.A., and Lumkes, J.H. (2010). Merrill, K, J., Holland, M.A., and Lumkes, J.H. Efficiency analysis of a digital pump/motor as compared to a valve plate design. In Proc. of the 7th International Fluid Power Conference. Aachen, Germany. .
[7] Merritt, H.E. (1967). Merritt, H, E. Hydraulic control systems. New York, Wiley. .
[8] Noergaard, C., Bech, M.M., Roemer, D.B., and Pedersen, H.C. (2016). Noergaard, C, , Bech, M.M., Roemer, D.B., and Pedersen, H.C. Optimisation of moving coil actuators for digital hydraulic machines. In Proc. of the 8th Workshop on Digital Fluid Power. Tampere, Finland, pages 39--54. .
[9] Nordaas, S., Andersen, T.O., and Ebbesen, M.K. (2017). Nordaas, S, , Andersen, T.O., and Ebbesen, M.K. Feasibility study of a digital hydraulic winch system. In Proc. of the Ninth Workshop on Digital Fluid Power. Aalborg, Denmark. .
[10] Rampen, W. (2010). Rampen, W, The development of digital displacement technology. In Proc. of the Fluid Power & Motion Control. ASME/Bath, Bath, UK, pages 12--17. Keynote adress. .
[11] Roemer, D.B. (2014). Roemer, D, B. Design and Optimization of Fast Switching Valves for Large Scale Digital Hydraulic Motors. Ph.D. thesis, Department of Energy Technology, Aalborg University, 2014. .
[12] Roemer, D.B., Johansen, P., Pedersen, H., and Andersen, T. (2013). Roemer, D, B., Johansen, P., Pedersen, H., and Andersen, T. Analysis of valve requirements for high-efficiency digital displacement fluid power motors. In Proc. of the 8th International Conference on Fluid Power Transmission and Control. Hangzhou, China, pages 122--126. .
[13] Roemer, D.B., Johansen, P., Schmidt, L., and Andersen, T.O. (2015). Roemer, D, B., Johansen, P., Schmidt, L., and Andersen, T.O. Modeling of movement-induced and flow-induced fluid forces in fast switching valves. In Proc. of 2015 International Conference on Fluid Power and Mechatronics. Harbin, China, pages 978--983. doi:10.1109/FPM.2015.7337257
[14] Roemer, D.B., Noergaard, C., Bech, M.M., and Johansen, P. (2016). Roemer, D, B., Noergaard, C., Bech, M.M., and Johansen, P. Valve and manifold considerations for digital hydraulic machines. In Proc. of the 8th Workshop on Digital Fluid Power. Tampere, Finland, pages 213--227. .
[15] Sasaki, M., Yuge, A., Hayashi, T., Nishino, H., Uchida, M., and Noguchi, T. (2014). Sasaki, M, , Yuge, A., Hayashi, T., Nishino, H., Uchida, M., and Noguchi, T. Large capacity hydrostatic transmission with variable displacement. In Proc. of the 9th International Fluid Power Conference. Aachen, Germany. .
[16] Soerensen, R.M., Hansen, M.R., and Mouritsen, O. (2012). Soerensen, R, M., Hansen, M.R., and Mouritsen, O. Numerical and Experimental Study of Friction Loss in Hydrostatic Motor. Modeling, Identification and Control. 33(3):99--109. doi:10.4173/mic.2012.3.2
[17] Tammisto, J., Huova, M., Heikkilä, M., Linjama, M., and Huhtala, K. (2010). Tammisto, J, , Huova, M., Heikkilä, M., Linjama, M., and Huhtala, K. Measured characteristics of an in-line pump with independently controlled pistons. In Proc. of the 7th International Fluid Power Conference. Aachen, Germany, pages 1--12. .
[18] Taylor, J., Rampen, W., Abrahams, D., and Latham, A. (2015). Taylor, J, , Rampen, W., Abrahams, D., and Latham, A. Demonstration of a digital displacement hydraulic hybrid - a globally affordable way of saving fuel. In Proc. of the Annual JSAE Congress. Pacifico Yokohama, Japan. .
[19] Taylor, J., Rampen, W., Robertson, A., and Caldwell, N. (2011). Taylor, J, , Rampen, W., Robertson, A., and Caldwell, N. Digital displacement hydraulic hybrids - parallel hybrid drives for commercial vehicles. Technical report, Artemis Intelligent Power, Ltd., Paper presented at the annual JSAE congress, Kyoto, Japan. .
BibTeX:
@article{MIC-2018-1-3,
title={{Flow Characteristics and Sizing of Annular Seat Valves for Digital Displacement Machines}},
author={Nørgård, Christian and Bech, Michael Møller and Andersen, Torben Ole and Christensen, Jeppe Hals},
journal={Modeling, Identification and Control},
volume={39},
number={1},
pages={23--35},
year={2018},
doi={10.4173/mic.2018.1.3},
publisher={Norwegian Society of Automatic Control}
};