一种用于起重机起升系统的平衡阀动态特性分析与结构优化（英文）
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摘要
对一种用于起重机起升系统的平衡阀进行动态特性分析,讨论了不同工况下平衡阀的工作原理,找出影响系统稳定性的各项因素,分析了不同阻尼孔直径和平衡阀阀口截面梯度对平衡阀流量特性的影响,同时提出结构优化方案。仿真和测试结果表明:所提出的优化方案可以有效改善平衡阀的动态特性,减小负载下落时系统液压波动现象,为平衡阀的研究设计提供理论支持。
The dynamic characteristics of a balance valve used in crane lifting system were analyzed,the working principle of the balance valve under different working conditions was discussed,and the factors affecting the stability of the system are comprehensively analyzed. The influence of the diameter of the damped hole and the section gradient of the valve port on the flow characteristics of the balance valve was analyzed. At the same time,the structural optimization scheme was proposed. The simulation and test results show that reducing the diameter of the damping hole of the balance valve could obviously increase the stability of the system,but too small diameter will increase the throttling loss and affect the efficiency of the system. Through structural improvement,the dynamic characteristics of the balance valve could be effectively improved,and the pressure fluctuation amplitude of the system can be reduced when the load drops,thus providing a reference for the design and improvement of the balance valve.
The dynamic characteristics of a balance valve used in crane lifting system were analyzed,the working principle of the balance valve under different working conditions was discussed,and the factors affecting the stability of the system are comprehensively analyzed. The influence of the diameter of the damped hole and the section gradient of the valve port on the flow characteristics of the balance valve was analyzed. At the same time,the structural optimization scheme was proposed. The simulation and test results show that reducing the diameter of the damping hole of the balance valve could obviously increase the stability of the system,but too small diameter will increase the throttling loss and affect the efficiency of the system. Through structural improvement,the dynamic characteristics of the balance valve could be effectively improved,and the pressure fluctuation amplitude of the system can be reduced when the load drops,thus providing a reference for the design and improvement of the balance valve.
引文
[1]MARCIN PIETRZAK,STANISLAW WITCZAK.Experimental study of air-oil-water flow in a balancing valve[J].Journa of Petroleum Science and Engineering,2015,133:12-17.
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[3]WANG Xin,WU Wanrong.Analysis on Response Characteristics of Counterbalanced Valve in Vibration System[J].Journal of Engineering Studies,2018,18(2):199-205.
[4]GUO Xiaoqiang,ZHANG Jialin,CHEN Qi.Improvemen Research on the Flow Characteristics of a Balance Valve[J].Machine Tool&Hydraulics,2017,45(22):97-100.
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[6]LI Bin,GUO Song,MAO Xuyao,et al.Characteristic Analysis and Experiment of a Dynamic Flow Balance Valve[J].IOPConference Series:Earth and Environmental Science,2017,100(1):122-133.
[7]EIICHI KOJIMA,MASAAKI SHINADA.A Study on Stability of Hydraulic Control Circuits with Counter Balance Valve[J].Hydraulics&Pneumatics,2010,8(2):122-132.
[8]FU Xin,DU Xuewen,ZOU Jun,et al.Characteristics of flow through throttling valve undergoing a steep pressure gradient[J].International Journal of Fluid Power,2007,8(1):29-37.
[9]CHEUNG Howard,SHAN Kui,WANG Shengwei.A faulttolerant control method of balancing valves for condenser fouling in water-cooled chillers[J].Energy Procedia,2017,142:1793-1798.
[10]ZHOU Di.H Synchronization Control of Linear Systems and Its Application to Wafer-retical Stage[J].Chinese Journal of Mechanical Engineering,2005,18(2):174-178.
[11]O A GASIYAROVA,T V BASKOVA,A S KUL-MUKHAMETOVA,et al.Usefulness of Using Elasticity of the Hoisting Tackle in Modeling the Electric Drive of the Main Hoist of the Overhead Casting Crane with Two Driving Motors[J].Procedia Engineering,2017(206):1861-1866.
[2]ZHANG Guolong.Research on the Characteristics of piloted follow-up Load Control Valves in boom system of crane[D].Hangzhou:Zhejiang University,2013.
[3]WANG Xin,WU Wanrong.Analysis on Response Characteristics of Counterbalanced Valve in Vibration System[J].Journal of Engineering Studies,2018,18(2):199-205.
[4]GUO Xiaoqiang,ZHANG Jialin,CHEN Qi.Improvemen Research on the Flow Characteristics of a Balance Valve[J].Machine Tool&Hydraulics,2017,45(22):97-100.
[5]RHEE KN,SHIN MS,YEO MYOUNG-SOUK,et al.Development of an evaluation strategy of hydronic balancing valves for radiant floor heating systems[J].Building Services Engineering Research and Technology,2015,36(4):422-438.
[6]LI Bin,GUO Song,MAO Xuyao,et al.Characteristic Analysis and Experiment of a Dynamic Flow Balance Valve[J].IOPConference Series:Earth and Environmental Science,2017,100(1):122-133.
[7]EIICHI KOJIMA,MASAAKI SHINADA.A Study on Stability of Hydraulic Control Circuits with Counter Balance Valve[J].Hydraulics&Pneumatics,2010,8(2):122-132.
[8]FU Xin,DU Xuewen,ZOU Jun,et al.Characteristics of flow through throttling valve undergoing a steep pressure gradient[J].International Journal of Fluid Power,2007,8(1):29-37.
[9]CHEUNG Howard,SHAN Kui,WANG Shengwei.A faulttolerant control method of balancing valves for condenser fouling in water-cooled chillers[J].Energy Procedia,2017,142:1793-1798.
[10]ZHOU Di.H Synchronization Control of Linear Systems and Its Application to Wafer-retical Stage[J].Chinese Journal of Mechanical Engineering,2005,18(2):174-178.
[11]O A GASIYAROVA,T V BASKOVA,A S KUL-MUKHAMETOVA,et al.Usefulness of Using Elasticity of the Hoisting Tackle in Modeling the Electric Drive of the Main Hoist of the Overhead Casting Crane with Two Driving Motors[J].Procedia Engineering,2017(206):1861-1866.