压力容器2025，Vol.42Issue(2)：38-45,8.DOI:10.3969/j.issn.1001-4837.2025.02.005
基于流固耦合的蒸汽发生器传热管结构应力分析
Stress analysis of heat transfer tubes structure in steam generator based on fluid-structure coupling method
摘要
Abstract
The heat transfer tubes of steam generator are the weak links in the primary circuit critical pressure boundary of the pressurized water reactor nuclear power plant.The system operating parameters during normal operation and accidents directly affect the integrity of the heat transfer tubes structure.To further study the structural response characteristics of heat transfer tubes,local models of the heat transfer tubes with two mainstream arrangement methods were established,and fluid-structure interaction calculations were carried out respectively under normal operation and typical accident parameters.Moreover,the load variation laws of the key parts of the heat transfer tubes under the combined action of the primary and secondary side fluids were obtained.The results show that the maximum equivalent stresses of the straight arrangement model under normal operation and loss of feed water accident parameters are 110 MPa and 143 MPa,while the cross arrangement model is 112 MPa and 146 MPa.Under the same flow conditions,the stress and deformation of the heat transfer tubes cross arrangement model are greater than those of the straight arrangement model.The equivalent stress at the root cross-section of the heat transfer tubes decreases first and then increases along the wall thickness direction,while the equivalent stress at the middle cross-section shows an approximate linear decrease along the wall thickness direction.In the root area of the heat transfer tube,the equivalent stress on the inner and outer walls first rapidly decreases and then rapidly increases along the axial height,followed by the formation of a stress plateau.The research results can provide a reference for the design and operation of the steam generator.关键词
蒸汽发生器/传热管/流固耦合/应力分析Key words
steam generator/heat transfer tube/fluid-structure coupling/stress analysis分类
机械工程引用本文复制引用
郭超,魏超,史强,张盼..基于流固耦合的蒸汽发生器传热管结构应力分析[J].压力容器,2025,42(2):38-45,8.基金项目
先进核能技术设计与安全教育部重点实验室开放课题项目(KLANEDS202312) （KLANEDS202312）
