摘要
为研究核级电动闸阀的抗冲击性能,建立了受设计压力、温度及设计冲击加速度等载荷共同作用的核级电动闸阀有限元模型。利用ANSYS分析软件,对该阀门进行模态分析,结果表明可采用等效静力法分析阀门的抗冲击性能。基于等效静力法,分别分析了阀门在组合载荷冲击作用下的谐响应及静力学特性。谐响应分析结果表明,闸阀系统在承受按简谐规律随时间变化的冲击载荷时,阀体与阀座产生的应力及变形量远小于许用值,结构安全裕度大。静力学分析结果表明在组合载荷作用下该阀门的压力边界完整性保持较好,满足设计要求。通过对核级电动闸阀在设计工况下的抗冲击性能分析,为该类阀门的工程设计提供指导。
To study the impact resistance of nuclear grade electric gate valve,a finite element model of nuclear grade electric gate valve under the combination of design pressure,temperature and design impact acceleration was established.The modal analysis of the valve was conducted using ANSYS software.The results show that the equivalent static method can be used to analyze the impact resistance of the valve.Based on the equivalent static method,the harmonic response and static characteristics of the valve under combined load impact are analyzed respectively.The results of harmonic response analysis show that the stress and deformation of valve body and valve seat are far less than the allowable value,and the structural safety margin is large.The static analysis results show that the pressure boundary integrity of the valve is well maintained under the combination of impact loadings,which meets the design requirements.This work provides guidance for the engineering design of this valve by analyzing the impact resistance of the valve under the design condition.
作者
冷冰
赵晶
LENG Bing;ZHAO Jing(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,Liaoning,China)
出处
《阀门》
2021年第6期315-319,共5页
VALVE MAGAZINE
关键词
核级电动闸阀
模态分析
谐响应分析
等效静力法
抗冲击性能
nuclear grade electric gate valve
modal analysis
harmonic response analysis
equivalent static method
impact resistance
