高频交变压力下先导式溢流阀主阀口异常开启分析
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摘要
针对液压激振系统中存在高频交变压力的情况,为研究高频交变压力下先导式溢流阀的响应特性,对先导式溢流阀进行理论分析和AMEsim仿真分析,并进行试验对比研究。仿真结果表明:交变压力下先导式溢流阀主阀口存在异常开启现象,使系统能量损失增加;交变压力峰值、幅值和建压时间Δt均对先导式溢流阀主阀口正常开启产生影响。试验结果与理论分析相吻合,揭示了高频交变压力下溢流阀主阀口异常开启的现象。
In order to study the response characteristics of pilot relief valve under high frequency alternating pressure,theoretical analysis and AMEsim simulation were carried out and compared with experiment.The simulation results show that the main valve port of the pilot relief valve opens abnormally under alternating pressure that increases system energy loss.The alternating pressure peak,amplitude and built-pressure timeΔt all affect the normal opening of the main valve port.The experimental results are consistent with the theoretical analysis results, which reveals the phenomenon of abnormal opening of the main valve port of relief valve under high frequency alternating pressure.
In order to study the response characteristics of pilot relief valve under high frequency alternating pressure,theoretical analysis and AMEsim simulation were carried out and compared with experiment.The simulation results show that the main valve port of the pilot relief valve opens abnormally under alternating pressure that increases system energy loss.The alternating pressure peak,amplitude and built-pressure timeΔt all affect the normal opening of the main valve port.The experimental results are consistent with the theoretical analysis results, which reveals the phenomenon of abnormal opening of the main valve port of relief valve under high frequency alternating pressure.
引文
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[8]丛东华,宋英杰,王海涛.加快先导式溢流阀主阀口关闭过程的方法[J].沈阳大学学报:自然科学版,2001,13(4):52-54.Cong Dong-hua,Song Ying-jie, Wang Hai-tao.Speed up the method of the main valve port closing of the pilot relief valve[J].Journal of Shenyang University(Science and Technology),2001,13(4):52-54.
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[12]Dimitrov S.Investigation of static characteristics of pilot operated pressure relief valves[J].Annals of the Faculty of Engineering Hunedoara-International Journal of Engineering,2013,11(2):201-206.
[13]Sang C J,Kang J H.Orificedesign of a pilot-operated pressure relief valve[J].Journal of Pressure Vessel Technology,2017,139(3):1-10.
[2]寇子明,王文,廉红珍.旋转阀控差动缸式液压激振器仿真与实验研究[J].机床与液压,2009,37(12):85-87.Kou Zi-ming,Wang Wen,Lian Hong-zhen.Simulation and experimental research on a hydraulic exciter with rotating valve control differential effect cylinder[J].Machine Tool&Hydraulics,2009,37(12):85-87.
[3]张建卓,杨萃颖,张红记,等.转阀控制的高频液压激振器的研究[J].现代制造工程,2013(9):65-70.Zhang Jian-zhuo,Yang Cui-ying,Zhang Hong-ji,et al.Study on high frequency hydraulic exciter based on rotary valve control[J].Modern Manufacturing Engineering,2013(9):65-70.
[4]蔡俊飞.高频疲劳试验机激振控制系统的研究[D].杭州:浙江工业大学机械工程学院,2013.Cai Jun-fei.The research of the excitation control system for high-frequency fatigue test machine[D].Hangzhou:College of Mechanical Engineering,Zhejiang University of Technology,2013.
[5]贺小峰,何海洋,刘银水,等.先导式水压溢流阀动态特性的仿真[J].机械工程学报,2006,42(1):75-80.He Xiao-feng,He Hai-yang,Liu Yin-shui,et al.Numerical simulation on the dynamic characteristics of a two-stage water hydraulic relief valve[J].Chinese Journal of Mechanical Engineering,2006,42(1):75-80.
[6]訚耀保,原佳阳,傅俊勇.先导阀前腔串加阻尼孔的新型双级溢流阀特性[J].吉林大学学报:工学版,2017,47(1):129-136.Yin Yao-bao,Yuan Jia-yang,Fu Jun-yong.Characteristics of two-stage relief valve with series damping orifice in the front chamber of pilot valve[J].Journal of Jilin University(Engineering and Technology Edition),2017,47(1):129-136.
[7]王幼民.溢流阀结构参数的优化设计[J].农业机械学报,2003,34(1):67-69.Wang You-min.Optimization of structure parameters of hydraulic relief valve[J].Transactions of the Chinese Society for Agricultural Machinery,2003,34(1):67-69.
[8]丛东华,宋英杰,王海涛.加快先导式溢流阀主阀口关闭过程的方法[J].沈阳大学学报:自然科学版,2001,13(4):52-54.Cong Dong-hua,Song Ying-jie, Wang Hai-tao.Speed up the method of the main valve port closing of the pilot relief valve[J].Journal of Shenyang University(Science and Technology),2001,13(4):52-54.
[9]Gad O.Comprehensive nonlinear modeling of a pilot operated relief valve[J].Journal of Dynamic Systems Measurement&Control,2012,135(1):1-7.
[10]Tsukiji T,Suzuki Y.Numerical simulation of an axisymmetric flow in a poppet valve for oil hydraulics using the vortex method[J].Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers,Part B,1997,63(606):552-559.
[11]Dimitrov S.Transient response of a pilot operated pressure relief valve with compensating control piston[J].Annals of the Faculty of Engineering Hunedoara International Journal of Engineering,2014,12(1):227-232.
[12]Dimitrov S.Investigation of static characteristics of pilot operated pressure relief valves[J].Annals of the Faculty of Engineering Hunedoara-International Journal of Engineering,2013,11(2):201-206.
[13]Sang C J,Kang J H.Orificedesign of a pilot-operated pressure relief valve[J].Journal of Pressure Vessel Technology,2017,139(3):1-10.