Analysis and design of an axial piston water-pump with piston valve

• Published in: Journal of mechanical science and technology Vol. 25; no. 2; pp. 371 - 378
• Main Authors: Luo, Xiaohui, Niu, Zihua, Shi, Zhaocun, Hu, Junhua
• Format: Journal Article
• Language: English
• Published: Heidelberg Korean Society of Mechanical Engineers 01-02-2011; Springer Nature B.V; 대한기계학회
• Subjects: Applied sciences; Chambers; Control; Drains; Dynamical Systems; Engineering; Exact sciences and technology; Industrial and Production Engineering; Intakes; Mechanical Engineering; Mechanical engineering. Machine design; Optimization; Outlets; Pistons; Ports; Pump and compressors (turbocompressors, fans, etc.); Valves; Vibration; 기계공학; Axial piston water-pump; Piston valve; Optimum design; Pressure surge; Measuring machine; Phase change; Leak; Modeling; Optimization; Hydraulic pump; Phase transformation; Piston pump; Distributor; Pressure wave; Valve; Axial pump
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-010-1214-6

In this paper, we present a novel axial piston water-pump with piston valve, which carries out the flow distribution to drain and sucks water by the interaction of each piston. This novel water-pump could achieve change in-phase between flow rate and the passage areas of the intake and outlet ports. In order to completely achieve the in-phase change, the pressure that is assigned a fixed value in the piston chamber is optimized. On these grounds, the optimum shapes of the intake and outlet ports have been found to be rectangular according to theoretical analysis. The simulation results indicated that the optimum intake and outlet port shapes keeps the pressure in the piston chamber constant, and there is almost no pressure surge except for a very small pressure wave in the piston chamber. Finally, the test of model machine showed that the pressures of the intake and outlet port are very steady, but the leakage is large and the volumetric efficiency is 74.7%.