Thermal-hydraulic modeling and analysis ofspool valve with sloping U-shape notch by bond graph
来源期刊：中南大学学报(英文版)2015年第11期
论文作者：LOU Lei WU Wan-rong WANG Zhao-qiang LIANG Xiang-jing
文章页码：4205 - 4212
Key words：thermodynamics; hydraulic system; spool valve; bond graph; sloping U-shape notch
Abstract: To increase the efficiency and reliability of the thermodynamics analysis of the spool valve, the precise function expression of the flow area for the sloping U-shape notch orifice versus the spool stroke and thermal-hydraulic bond graph based on the conservation of mass and energy were introduced. Subsequently, the connection rule for the bond graph elements and the method to construct the complete thermal-hydraulic system model were proposed. On the basis of heat transfer analysis of a typical hydraulic circuit containing the spool valve, the lumped parameter for mathematical model of the system was given. At last, the reliability of the mathematical model of the flow area and the thermal-hydraulic system for the sloping U-shape notch orifice on the spool were demonstrated by the test. The good agreement between the simulation results and experimental data demonstrates the validity of the modeling method.
LOU Lei(娄磊)1, WU Wan-rong(吴万荣)1, WANG Zhao-qiang(王兆强)2, LIANG Xiang-jing(梁向京)1
(1.College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;
2.State Key Laboratory of Fluid Power Transmission and Control (Zhejiang University),Hangzhou 310027,China)
Abstract:To increase the efficiency and reliability of the thermodynamics analysis of the spool valve, the precise function expression of the flow area for the sloping U-shape notch orifice versus the spool stroke and thermal-hydraulic bond graph based on the conservation of mass and energy were introduced. Subsequently, the connection rule for the bond graph elements and the method to construct the complete thermal-hydraulic system model were proposed. On the basis of heat transfer analysis of a typical hydraulic circuit containing the spool valve, the lumped parameter for mathematical model of the system was given. At last, the reliability of the mathematical model of the flow area and the thermal-hydraulic system for the sloping U-shape notch orifice on the spool were demonstrated by the test. The good agreement between the simulation results and experimental data demonstrates the validity of the modeling method.
Key words:thermodynamics; hydraulic system; spool valve; bond graph; sloping U-shape notch
