偏心蝶式止回阀开启性能瞬态分析  

Transient Analysis on Opening Characteristic of Eccentric Butterfly Type Check Valve

作　　者：刘立志 陈纠 谭术洋 赵雪岑 

机构地区：[1]核反应堆系统设计技术国家重点实验室,四川成都610041

出　　处：《阀门》2014年第3期20-23,共4页VALVE MAGAZINE

摘　　要：采用计算流体力学分析软件Autodesk Simulation CFD及其重叠网格技术,对偏心蝶式止回阀的两种阀板结构分别进行了开启特性瞬态分析。基于粘性可压缩流动Navier-Stokes方程进行了湍流非定常计算,对两种阀板结构的阀板运动状态、阀内的压力分布和速度矢量进行了分析及对比。结果表明,原阀板结构开启过程中存在不稳定且未达到预期的全开状态,改进阀板结构开启过程中阀板开度呈线性增加且稳定在全开位置。Transient analysis proceed on opening characteristic of an eccentric butterfly type check valvewith two valve plates separately by the computational fluid mechanics software Autodesk SimulationCFD and its overlapping mesh technique. Based on the Navier - Stokes equation for viscid and com-pressible flow, the motion behavior of valve plate, the pressure distribution and velocity vector are ana-lyzed for two valve plates separately and compared. The results show that the original valve plate ap-pears unbalanced status and can not reach to the predictive full open status, while improved valve platecan open with linearity increased opening angle and reach to full open status.

关 键 词：止回阀 开启性能 瞬态分析 

分 类 号：TH134[机械工程—机械制造及自动化]