摘要
根据循环发电工程中大型煤气压力调节阀的实际结构和工作条件,建立调节阀流固耦合系统动力学模型,对调节阀中流体与阀芯的流固耦合问题进行研究。分析不同开度下流固耦合对流体速度和漩涡形成的影响,探讨在大流量煤气压力作用下的阀芯和阀杆的等效应力分布以及变形情况,揭示流固耦合对流场作用于阀芯压力的影响。从流固耦合问题出发研究大型煤气压力调节阀,实现调节阀在流固耦合作用下的结构优化设计,对于提高我国大型调节阀的设计研究水平,具有重要的生产实际意义。
According to the real structure and work condition of a large-scale gas control valve used in recycling generating electricity project,a fluid-structure interaction system model of control valve was set up,the coupling of fluid and valve plug was studied.The influences of fluid-structure interaction on fluid velocity and eddy formation were analyzed.The von mises stress distribution and deformation of valve plug and stem under the action of mass flow gas were discussed.The effect of fluid-structure interaction on pressure of fluid was revealed.Studying of large-scale gas control valve from the standpoint of fluid-structure interaction,to optimize the structure,is of great practical significance for advancing research level of large-scale control valves.
出处
《机床与液压》
北大核心
2011年第11期10-14,共5页
Machine Tool & Hydraulics
基金
国家高技术研究发展计划863项目(2008AA04Z130)
关键词
调节阀
流固耦合
应力
压力
Control valve
Fluid-structure interaction
Stress
Pressure
