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当前位置: 首页 > 文章 > 单座式调节阀阀芯-阀杆系统流固耦合振动研究 农业机械学报 2014,45 (5) 291-298
Position: Home > Articles > Research on Fluid-structure Coupling Vibration of Valve Core-stem System in a Single-type Control Valve Transactions of the Chinese Society for Agricultural Machinery 2014,45 (5) 291-298

单座式调节阀阀芯-阀杆系统流固耦合振动研究

作  者：
王雯;傅卫平;孔祥剑;马玉山;徐丽
单  位：
吴忠仪表有限责任公司;西安理工大学机械与精密仪器工程学院
关键词：
调节阀;阀芯-阀杆系统;流固耦合;振动
摘  要：
针对单座式调节阀阀芯-阀杆系统的流固耦合振动问题,建立了考虑阀门定位器作用的系统动态仿真模型,给出了求解阀芯-阀杆系统响应的预估-校正算法,利用ANSYS软件对系统在固定开度与变开度情况和流开型与流闭型情况下的振动响应进行了定性分析。研究表明:对于固定开度,阀芯稳态位移偏移量以及流体力随压差增加以及开度减小而增大,阀芯动态位移过渡时间随压差增加而缩短,而流开型流向时阀芯位移响应幅度要大于流闭型流向。对于开度减小情况,采用流闭型流向时阀芯动态位移过渡时间更短,且压差越大,阀芯动态位移过渡时间越短,而流开型流向时则相反;对于开度增大情况,阀芯动态位移过渡时间和压差之间的关系与开度减小情况相反。
译  名：
Research on Fluid-structure Coupling Vibration of Valve Core-stem System in a Single-type Control Valve
作  者：
Wang Wen;Fu Weiping;Kong Xiangjian;Ma Yushan;Xu Li;Faculty of Mechanical and Precision Instrument Engineering,Xi'an University of Technology;Wuzhong Instrument Co. ,Ltd.;Petrochina Guangdong Petrochemical Company;
关键词：
Control valve Valve core-stem system Fluid-structure interaction Vibration
摘  要：
Aiming at the fluid-structure interaction vibration of the valve core-stem system in a single-type control valve,a dynamic simulation model of this system was built with consideration of a valve positioner. The predictor-corrector method was given for solving response of the valve core-stem system. The vibration response of the systems was analyzed by ANSYS software under the conditions of fixed and varying opening as well as flow-opening and flow-closing. The research results show that,for fixed opening,the valve core steady displacement offset and the fluid imbalance force increase with the increase of the pressure difference and the decrease of the opening; the transient time of the valve core dynamic displacement is shortened with the increase of the pressure difference,and the valve core dynamic displacement response amplitude under flow-opening is greater than that under flow-closing. For reducing the opening,the transient time of the valve core dynamic displacement is shorter than that under flow-closing,and the greater the pressure difference,the shorter the time,while under flow-opening it is opposite; for increasing the opening,the relation between the transient time and the pressure difference is contrary to that under reducing the opening.

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