摘要
针对调节类阀门流量调节性能差引发的阀门调节不稳定及振动等问题,以窗口型套筒调节阀和多孔式套筒调节阀为研究对象,基于调节阀节流方程、调节特性理论方程和节流件几何设计方程,对其节流件进行了等百分比流量特性的理论设计分析,结合ANSYS Fluent流体仿真分析,开展了节流件的正向设计方法研究。以DN200-Cvmax300的窗口型套筒调节阀和DN250-Cvmax200的多孔式套筒调节阀等百分比流量特性的节流件为例,进行了其正向设计和仿真验证。结果表明,两调节阀仿真流量特性曲线和理论流量特性曲线趋势均高度吻合;对窗口型套筒调节阀,各开度下仿真Cv和理论Cv误差均在-2%~3%之间;对多孔式套筒调节阀,各开度下仿真Cv和理论Cv误差均在-8%~6%之间。研究结果可以为因节流件设计不合理导致的调节阀不稳定调节及振动等问题提供解决思路,为行业的发展提供助力。
For problems such as both unstable valve regulation and valve vibration caused by poor flow regulation performance of regulating valves,window-type sleeve regulating valve and porous sleeve regulating valve were taken as research objects.Based on the throttling equation of the regulating valve,the theoretical equation for regulating characteristics and the geometric design equation of throttling parts,the theoretical design of equal percentage flow characteristics of its throttling parts was analyzed.The research on the forward design method of throttling parts was carried out in combination with the ANSYS Fluent fluid simulation analysis.Taking the throttling parts with equal percentage flow characteristics of DN200-C_(vmax)300 window-type sleeve regulating valve and DN250-C_(vmax)200 porous sleeve regulating valve as an example,their forward design and simulation verification were carried out.The results show that the trends of both simulation flow characteristic curve and theoretical flow characteristic curve of the two regulating valves are highly consistent;for the window-type sleeve control valve,at each opening,the error between simulated C_(v) and theoretical C_(v) is between-2%and 3%;for the porous sleeve control valve,at each opening,the error between simulated C_(v) and theoretical C_(v) is between-8%and 6%.The research results can provide solutions to the problems such as unstable regulation and vibration of regulating valves caused by the unreasonable design of throttling parts,and provide assistance for the development of the industry.
作者
王伟波
郝娇山
蒋永兵
廖静
周忠云
WANG Weibo;HAO Jiaoshan;JIANG Yongbing;LIAO Jing;ZHOU Zhongyun(Technology Center Control Valve Research Institute,Chongqing Chuanyi Automation Co.,Ltd.,Chongqing 400707,China;Chongqing Chuanyi Control Valve Co.,Ltd.,Chongqing 400707,China)
出处
《流体机械》
CSCD
北大核心
2022年第11期27-36,共10页
Fluid Machinery
基金
国家科技重大专项(2019ZX06002026-005)。
关键词
节流件
正向设计
流量特性
理论分析
流体仿真
throttling parts
forward design
flow characteristics
theoretical analysis
fluid simulation
