文献类型：期刊文献

中文题名：先导式安全阀导阀推杆可靠性的概率有限元分析

英文题名：Probabilistic finite-element analysis on reliability of pilot-operated safety valve’s pilot valve push rod

作者：刘延斌[1];秦新亚[1];王学生[1];陈琴珠[1];方瑞祥[1]

机构：[1]华东理工大学承压系统与安全教育部重点实验室,上海200237

年份：2023

卷号：40

期号：10

起止页码：1

中文期刊名：机械设计

外文期刊名：Journal of Machine Design

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2023_2024】；

语种：中文

中文关键词：先导式安全阀;导阀推杆;可靠性;概率有限元;

外文关键词：pilot-operated safety valve;pilot valve push rod;reliability;probabilistic finite-element

摘要：为了分析核电先导式安全阀发生拒开事故下导阀推杆的可靠性,文中基于ANSYS软件,对导阀推杆开展了静力学分析并进行了网格无关性验证,获得了其应力与变形分布。考虑材料属性、几何结构及载荷的影响,采用Six Sigma Analysis模块对导阀推杆进行了概率有限元分析,获得了应力及变形的概率分布情况。结果表明:在设定参数及响应面容差条件下,导阀推杆的可靠度为100%;在材料性能中,泊松比对导阀应力与变形影响最大,结构参数中直径D与倒圆角半径R对应力影响最大,压力对应力与变形的影响较小。
In this article, in order to analyze the reliability of the pilot-operated safety valve's pilot valve push rod in the refuse-to-open accident in the nuclear power plant, ANSYS is used to carry out the static analysis on the pilot valve push rod, and the grid independence verification is conducted;thus, the stress and deformation distribution is identified. With the influence of material properties, geometric structure and load taken into consideration, the probabilistic finite-element analysis is conducted on the pilot valve push rod with the help of the Six Sigma Analysis module. The probability distribution of stress and deformation is obtained. The results show that when the parameters and the response surface tolerance are set, the reliability of the pilot valve push rod is 100%. In terms of material properties, Poisson's ratio has the greatest influence on the stress and deformation. In terms of geometric parameters, the diameter D and the fillet radius R have the greatest influence on the stress. The pressure has less effect on both the stress and the deformation.