Abstract
Hydropneumatic transformer (short for HP transformer) is used to pump pressurized hydraulic oil. Whereas, due to its insufficient usage of energy and low efficiency, a new kind of HP transformer: EEUHP transformer (Expansion energy used hydropneumatic transformer) was proposed. To illustrate the characteristics of the EEUHP transformer, a mathematical model was built. To verify the mathematical model, an experimental prototype was setup and studied. Through simulation and experimental study on the EEUHP transformer, the influence of five key parameters on the output flow of the EEUHP transformer were obtained, and some conclusions can be drawn. Firstly, the mathematical model was proved to be valid. Furthermore, the EEUHP transformer costs fewer of compressed air than the normal HP transformer when the output flow of the two kinds of transformers are almost same. Moreover, with an increase in the output pressure, the output flow decreases sharply. Finally, with an increase in the effective area of hydraulic output port, the output flow increases distinctly. This research can be referred to in the performance and design optimization of the EEUHP transformers.
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Yan Shi is an associate professor of School of Automation Science and Electrical Engineering, Beihang University, Beijing, China. He received his doctor degree in mechanical engineering from Beihang University. His research interests include intelligent mechanical devices and energy-saving technologies of pneumatic system.
Tiecheng Wu was born in 1991. Now he is a master at School of Automation Science and Electrical Engineering, Beihang University, China. He received his bachelor degree from Yanshan University, China in 2014. His research interests include power transmission and motion control.
Maolin Cai is a professor of School of Automation Science and Electrical Engineering, Beihang University, Beijing, China. He received his doctor degree in Tokyo Institute of Technology. His research interests include energy saving, measurement, simulation and control of pneumatic system, Research on the technology of high efficiency and large scale compressed air energy storage and so on.
Chong Liu is a post doctor of school of Automation Science and Electrical Engineering, Beihang University, Beijing, China. He received his doctor degree in mechanical engineering from Beihang University. His research interests include Energy storage and Intelligent distributed integrated energy system.
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Shi, Y., Wu, T., Cai, M. et al. Modelling and study on the output flow characteristics of expansion energy used hydropneumatic transformer. J Mech Sci Technol 30, 1163–1170 (2016). https://doi.org/10.1007/s12206-016-0220-8
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DOI: https://doi.org/10.1007/s12206-016-0220-8