核级套筒式调节阀的流量特性
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摘要
为了提高核级套筒式调节阀小开度抗堵塞能力与大开度时的介质流通能力,设计了具有两个大窗口和两个小窗口的套筒,并采用仿真与实验相结合的方式研究了套筒式调节阀的流量特性。首先,基于工况参数设计了套筒窗口。然后,采用计算流体力学软件分析了不同开度下阀内流体流动规律,得到流场中压力和速度分布,计算并绘制流量特性曲线。最后,采用实验的方法测定了阀门流量特性曲线。结果分析表明,模拟值与试验值有较好的吻合,并且流量系数曲线光滑连续,满足设计要求。
In order to solve the problem of medium flow ability with wide opening and anti-blocking ability with small opening of nuclear sleeve regulating valve,a sleeve with two large windows and two small windows is designed.The flow characteristics of the sleeve type valve are studied by the combination of simulation and experiment.First,the sleeve window is designed considering the operating condition parameters. Then,the flow law in the valve with different opening is analyzed with computational fluid dynamics software,the pressure and velocity distribution in the flow field are obtained,and the flow characteristic curve is calculated and drawn. Finally,the flow characteristic curve of valve was measured by experimental method. The results show that the simulated value is in good agreement with the experimental value,and the flow coefficient curve is smooth and continuous,which meets the design requirements.
In order to solve the problem of medium flow ability with wide opening and anti-blocking ability with small opening of nuclear sleeve regulating valve,a sleeve with two large windows and two small windows is designed.The flow characteristics of the sleeve type valve are studied by the combination of simulation and experiment.First,the sleeve window is designed considering the operating condition parameters. Then,the flow law in the valve with different opening is analyzed with computational fluid dynamics software,the pressure and velocity distribution in the flow field are obtained,and the flow characteristic curve is calculated and drawn. Finally,the flow characteristic curve of valve was measured by experimental method. The results show that the simulated value is in good agreement with the experimental value,and the flow coefficient curve is smooth and continuous,which meets the design requirements.
引文
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[2]杨源泉.阀门设计手册[M].北京:机械工业出版社,1992.
[3]陆培文.实用阀门设计手册[M].北京:机械工业出版社,2012.
[4]石娟.调节阀内3维流动与启闭过程的数值模拟及分析[M].上海:上海理工大学,2005.
[5]明赐东.调节阀计算选型使用[M].成都:成都科技大学出版,1999.
[6]顾成果.套筒调节阀套筒结构的设计与分析[J].阀门,2010(4):8-10.
[7]MCCLOY D,MCGUIGAN R H.Some static and dynamic characteristics of poppet valves[J].Proc.Instn.mech.Engrs,1964:179-181.
[8]钟英杰,都晋燕,张雪梅.CFD技术及在现代工业中的应用[J].浙江工业大学学报,2003,31(3):284-289.
[9]韩占忠,王敬,自小平.FLUENT流体工程仿真计算实例与应用[M].北京:北京理工大学出版社,2004.
[10]工艳珍.于兰英.柯坚.等.水压锥阀流场的CFD解析[J].机械,2003,30(5):20-22.
[11]徐克鹏.蔡虎.崔永强.等.大型汽轮机主汽调节阀的试验与数俏分析[J].动力工程.2003,23(6).2785-2789.
[12]王伟强.汤廷孝.束学道.等.低频超声三次雾化喷嘴设计及雾化实验[J].机械设计与研究,2016,32(3):1006-2343.
[13]吴晓明,要继业,李伟,等.U+K节流槽滑阀的数值模拟[J].流体传动与控制,2010(5):13-15.
[14]AMIRANTE R,DEL VESCOVO G,LIPPOLIS A.Evaluation of the flow forces on an open centre directional control valve by means of a computational fluid dynamic analysis[J].Energy Convers Manage,2006,47:1748-1760.
[15]AMIRANTE R,DEL VESCOVO G,LIPPOLIS A.A flow forces analysis of an open centre hydraulic directional control valve sliding spool[J].Energy Convers Manage,2006,47:114-131.
[16]李毅.鲍劲松.金烨..等.有限元平面混合网格优化策略[J].机械设计与研究,2008,24(3):1006-2343.