摘要
针对某型负载敏感阀U型节流槽流量调节范围小、响应慢等问题,通过分析阀口开度与过流面积的函数关系,设计了一种Ω型结构节流槽,建立阀口过流面积数学模型,利用粒子群算法以流量增益为目标对其结构参数进行寻优,利用FLUENT仿真软件对其性能进行了验证。结果表明:Ω型节流槽阀口开度-过流面积的设计参数最优值r为1.5 mm、L1为5.6 mm、h为4.7 mm。U型与Ω型节流槽的阀口开度-过流面积均呈现分段增大的趋势。当阀口开度小于3 mm,U型与Ω型过流面积梯度一致;当阀口开度处于3.0~5.6 mm,U型过流面积梯度逐渐减小,Ω型过流面积梯度增大,Ω型比U型平均增大32.66%,具有较高的流量增益;当阀口开度处于3.0~5.6 mm时,Ω型最大流速峰值比U型平均减小4%,对节流槽冲击减弱,稳定性相对提高。
This paper proposes anΩ-type throttling slot designed to replace U-type throttling slot of a load sensing valve hindered by inherent drawbacks,such as smaller flow regulation range and slower response.The design is achieved by analyzing the functional relationship between valve opening and flow area,developing the mathematical model of flow area,optimizing the structure parameters by particle swarm optimization algorithm using flow gain as the target,and verifying the performance using FLUENT simulation software.The results show that optimal value of design parameters are r=1.5 mm,L1=5.6 mm and h=4.7 mm for the orifice opening area ofΩ-type throttling groove;there is a tendency to increase by stages both in the valve opening and flow area of U-type andΩ-type throttling grooves;when the valve opening is less than 3.0 mm,the the same gradient is observed in U-shaped andΩ-shaped flow area;when the valve opening ranges between 3.0-5.6mm,there is a gradual decrease in the gradient of U-shaped flow area,but an increase in the gradient ofΩ-shaped flow area,a 32.66%greater average increase inΩ-shaped flow area than in U-shaped flow area,with a higher flow gain adequate;and when the valve opening is 3.0-5.6 mm,Ω-type shows a lower peak value of maximum velocity than U-type by an average of 4%,weakening the impact on throttling groove,with a relatively improved stability.
作者
吴卫东
丁一
蔡树文
徐威
周兴平
Wu Weidong;Ding Yi;Cai Shuwen;Xu Wei;Zhou Xingping(School of Mechanical Engineering, Heilongjiang University of Science & Technology, Harbin 150022, China)
出处
《黑龙江科技大学学报》
CAS
2021年第1期68-73,共6页
Journal of Heilongjiang University of Science And Technology
基金
哈尔滨市科技创新人才研究专项资金项目(2017RAXXJ017)。
关键词
负载敏感阀
节流槽
优化设计
粒子群算法
load sensing valve
throttle groove
optimized design
particle swarm optimization
