摘要
外展盘式控制角阀在高压差工况下运行时,常规的阀杆与连接块螺纹连接结构很容易出现相对转动,进而可能导致阀杆脱落,严重时甚至会引发装置安全事故。此外,高压差流体产生的动水力容易导致阀芯导向叶片磨损阀座密封面及阀座内孔,致使阀门产生动作卡涩现象,影响了阀门的控制精度。基于数值计算,分析阀芯导向叶片结构、安装角度对阀芯所受动水扭矩及动水力的影响,对工程应用中阀杆与连接块连接形式及阀芯导向叶片安装角度的选择有重要指导意义。
When the disc rising up control angle valve is operated under the condition of high pressure difference, the conventional screw connection structure between the valve stem and the connector is easy to rotate, which may cause the valve stem to fall off, and even cause safety accidents. In addition, the hydrodynamic force produced by the high pressure difference fluid easily causes the guide fins of the valve plug to wear the sealing surface and inner hole of the valve seat, resulting in the valve action jam phenomenon, which affects the control accuracy of the valve. Based on the numerical calculation, this paper analyzes the influence of the structure and installation angle of the guide fins on the hydrodynamic torque and hydrodynamic force of the valve plug, which has important guiding significance for the selection of the connection form between the valve stem and the connector and the installation angle of the guide fins of the valve plug in the engineering application.
作者
张志超
ZHANG Zhi-chao(Wuxi Smart Auto-control Engineering Co.,LTD.,Wuxi 214112,Jiangsu,China)
出处
《阀门》
2023年第1期15-19,共5页
VALVE MAGAZINE
关键词
外展盘式控制角阀
动水扭矩
动水力
导向叶片
disc rising up control angle valve
hydrodynamic torque
hydrodynamic force
guide fins
