Abstract:The structural characteristics of a V-shaped throttling orifice are analyzed to evaluate its throttle performance. In doing so, four performance indices are proposed, namely the slope of equivalent hydraulic diameter, dV2, ratio of equivalent throttling section areas, k, cavitation numbers, σ2A1in and σ2A1out at the smallest throttling section A2. Homogeneous design is introduced into the structural design of V-shaped throttling orifice, and then the values of four evaluation indices of 16 design cases are calculated. Entropy analysis is applied into the study on throttle performance of these orifices, and then the orifice structure is optimized to achieve the best throttle performance. Compared with the initial structure of the orifice, the optimized one has an improved throttle performance.
袁士豪, 楼盼龙, 吕剑昊. 基于熵值分析的节流阀口节流特性[J]. 排灌机械工程学报, 2015, 33(1): 61-66.
Yuan Shihao, Lou Panlong, Lü Jianhao. Study on throttle performance of throttling orifice based on entropy analysis. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(1): 61-66.
[1]袁寿其, 梁赟, 袁建平, 等. 离心泵进口回流流场特性的数值模拟及试验[J]. 排灌机械工程学报, 2011,29(6):461-465. Yuan Shouqi, Liang Yun, Yuan Jianping, et al. Numerical simulation and experiment on characteristics of centrifugal pump inlet recirculation[J]. Journal of Drainage and Irrigation Machinery Engineering, 2011,29(6):461-465.(in Chinese)[2]袁士豪, 殷晨波,刘世豪. 液压阀口二级节流特性[J]. 排灌机械工程学报, 2012,30(6):715-720. Yuan Shihao, Yin Chenbo, Liu Shihao. Two-step throttle properties of hydraulic valve ports[J]. Journal of Drainage and Irrigation Machinery Engineering, 2012,30(6):715-720.(in Chinese)[3]Ye Qifang, Chen Jiangping. Dynamic analysis of a pilot-operated two-stage solenoid valve used in pneumatic system[J]. Simulation Modeling Practice and Theory, 2009(17):794-816.[4]Zhu Kangwu, Gu Linyi, Chen Yuanjie, et al. High speed on/off valve control hydraulic propeller[J]. Chinese Journal of Mechanical Engineering, 2012,25(3):463-473.[5]Abuhaiba M, Olson W W. Geometric and kinematic modeling of a variable displacement hydraulic Bent-axis piston pump[J]. Journal of Computational and Nonlinear Dynamics, 2010,5(4):0410101-04101012.[6]Christianson L, Castello A, Christianson R, et al. Hydraulic property deternmination of denitrifying bioreactor fill mediaz[J]. Apllied Engineering in Agriculture, 2010(26):849-854.[7]Jin-Keun Choi, Arvind J, Georges L C. Scaling of cavitation erosion progression with cavitation intensity and cavitation source[J]. Wear, 2012,278/279:53-61.[8]Masjedian Jazi A, Rahimzadeh H. Waveform analysis of cavitation in a globe valve[J]. Ultrasonics, 2009,49(6/7):577-582.[9]Dasgupta K, Karmakar R. Modelling and dynamics of single-stage pressure relief valve with directional damping[J]. Simulation Modelling Practice and Theory, 2002,10(1/2):51-67.[10]弓永军, 周华, 杨华勇. 阀芯结构对纯水溢流阀抗汽蚀特性的影响研究[J]. 农业机械学报,2005,36(8):50-54. Gong Yongjun, Zhou Hua, Yang Huayong. Study on cavitation resistive property of water hydraulic relief valve with different piston structure[J]. Transactions of The Chinese Society for Agricultural Machinery, 2005,36(8):50-54.(in Chinese)[11]王仲勋, 郭永存. 基于CFD的锥阀流场解析与结构改造[J]. 机床与液压, 2006(6):167-169. Wang Zongxun, Guo Yongcun. Flow field simulation and optimization design for cone-valve based on CFD[J]. Machine Tool & Hydraulics, 2006(6):167-169.(in Chinese)[12]高殿荣, 王益群. 液压控制锥阀内流场的数值模拟与试验可视化研究[J]. 机械工程学报,2002,38(4):66-70. Gao Dianrong, Wang Yiqun. Numerical simulation and experimental visualization of the flow field inside hydraulic control poppet valve[J]. Chinese Journal of Mechanical Engineering, 2002,38(4):66-70.(in Chinese)