Steady-state Flow Force Analysis and Structure Improvement of Three-way Ball Valve High-speed On–off Valve

被引：0
|
作者：
Li Y. [1 ,2 ]
Wang N. [1 ,2 ]
Bao Z. [1 ,2 ]
Huang H. [1 ,2 ]
Du J. [1 ,2 ]
Du H. [1 ,2 ]
Ding J. [3 ]
机构：
[1] School of Mechanical Eng. and Automation, Fuzhou Univ., Fuzhou
[2] Key Lab. of Fluid Power and Intelligent Electro–Hydraulic Control, Fuzhou
[3] Shanghai Hunter Hydraulic Control Technology Co., Ltd., Shanghai
来源：
Gongcheng Kexue Yu Jishu/Advanced Engineering Sciences | 2023年 / 55卷 / 02期
关键词：
ball valve; CFD; compensation; flow force; high-speed on–off valve;
D O I：
10.15961/j.jsuese.202101054
中图分类号：
学科分类号：
摘要：
For micro-small high-speed on-off valves, large flow and high-frequency response increase the flow force of the spool and affect its motion state. Therefore, analysis and compensation of the flow force are the key factors to improve the performance of the valve. To solve the problem that the traditional steady-state flow force theory calculation formula is not applicable due to the complex flow field structure of the ball valve high-speed on-off valve in high-frequency opening and closing state, the CFD method was used to study the flow force. Firstly, COMSOL software was utilized to establish the geometric model of the fluid field. Then, the pressure and streamline distribution diagram, flow curves, and steady-state flow force curves of the valve ball and spool under different valve openings were obtained by using the weakly compressible fluid and standard k–ε turbulence model and dynamic grid technology. Finally, to compensate for the reduced steady-state flow force, the valve port structure was optimized and the optimal parameters were determined according to the relationship between different valve port structure parameters and the force of the valve core, and the opening and closing time of the valve port. The results showed that the steady-state flow force of the valve ball in the oil inlet hole would decrease first and then increase with the opening of the valve port, but the steady-state flow force of the valve ball in the oil inlet hole was smaller than that of the valve ball in the oil return hole, so the steady-state flow force change on the spool was similar to that on the valve ball in the oil return hole. Reducing the diameter of the push rod and changing the flow channel into a gradually expanding flow channel could effectively compensate for the reduced steady-state flow force. Compared with the original structure, the opening and closing time of the improved optimal structure decreased from 1.047 ms to 0.714 ms, and the steady-state flow force compensation effect was obvious. © 2023 Editorial Department of Journal of Sichuan University. All rights reserved.
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页码：298 / 306
页数：8
相关论文
共 25 条
  • [1] Qiang Gao, Zhu Yuchuan, Luo Zhang, Et al., Analysis and optimization on compound PWM control strategy of high-speed on/off valve[J], Journal of Beijing University of Aeronautics and Astronautics, 45, 6, pp. 1129-1136, (2019)
  • [2] Fang Jigen, Study on coupling field characteristics and optimum design of ESP high speed switch valve, (2019)
  • [3] Ma Zhongxiao, Structure design and research on hydraulic high speed on-off valve based on GMA, (2013)
  • [4] Iwan I, Ji S W, Kim H H, Et al., Effects of flow force on the characteristics of electrohydraulic servovalves[C], Proceedings of the 2015 International Conference on Automation, Cognitive Science,Optics,Micro Electro-Mechanical System, and Information Technology(ICACOMIT), pp. 1-6, (2016)
  • [5] Bordovsky P, Murrenhoff H., Investigation of steady-state flow forces in spool valves of different geometries and at different oil temperatures with the help of measurements and CFD simulations, Proceedings of BATH/ASME 2016 Symposium on Fluid Power and Motion Control, (2016)
  • [6] Li Tan, Haibo Xie, Jianbin Liu, Et al., Research on influence of different types of orifice on axial steady-state flow force in cartridge proportional valve[J], International Journal of Fluid Power, 20, 2, pp. 151-176, (2019)
  • [7] Finesso R, Rundo M., Numerical and experimental investigation on a conical poppet relief valve with flow force compensation[J], International Journal of Fluid Power, 18, 2, pp. 111-122, (2017)
  • [8] Qingjun Yang, Xinying Jia, Lv Qingjun, Et al., Study on steady flow force of inlet throttling spool valve based on CFD[J], Machine Tool & Hydraulics, 45, 13, pp. 125-130, (2017)
  • [9] Amirante R, Del Vescovo G, Lippolis A., Flow forces analysis of an open center hydraulic directional control valve sliding spool[J], Energy Conversion and Management, 47, 1, pp. 114-131, (2006)
  • [10] Mingxing Han, Yinshui Liu, Defa Wu, Et al., A numerical investigation in characteristics of flow force under cavitation state inside the water hydraulic poppet valves[J], International Journal of Heat and Mass Transfer, 111, pp. 1-16, (2017)
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