压力容器2026，Vol.43Issue(2)：61-70,10.DOI:10.3969/j.issn.1001-4837.2026.02.006
带矩形切向接管圆柱壳极限承压能力分析
Analysis of ultimate pressure-bearing capacity of cylindrical shells with rectangular tangential nozzles
摘要
Abstract
Rectangular tangential nozzles are often used as special process interfaces in petrochemical equipment(such as multiphase flow cyclone separators),but their structural strength design has not been clearly specified in design codes such as GB/T 150.The finite element limit load analysis method was used to calculate the pressure-bearing capacity of cylindrical shells with rectangular tangential nozzles,and the weakening effects of rectangular tangential nozzles with different dimensionless structural parameters(width-to-diameter ratio W/Di,diameter-to-thickness ratio Di/T,and thickness ratio t/T)on the strength of the cylindrical shell were investigated.It was found that the cylindrical shell with a square tangential nozzle having a side length ratio of 1 has the maximum pressure-bearing capacity.Therefore,a limit load reduction factor reflecting the strength reduction of the cylindrical shell due to the provision of a square tangential nozzle was defined.The influences of the three dimensionless structural parameters W/Di,Di/T,and t/T were studied,and regression analysis was performed on the limit load reduction factor based on a large number of numerical calculations.This is helpful for the strength design or safety assessment of cylindrical shells with square tangential nozzles.It was also found that for the same opening area,the pressure-bearing capacity of the cylindrical shell structure with a square tangential nozzle is significantly lower than that with a circular tangential nozzle.In other words,the strength weakening effect of a square tangential nozzle on the cylindrical shell is significantly greater than that of a circular tangential nozzle.Therefore,from a strength perspective,using a circular tangential nozzle is more reasonable than using a square tangential nozzle.关键词
切向接管/圆柱壳/极限载荷分析/承压能力Key words
tangential nozzle/cylindrical shell/limit load analysis/pressure-bearing capacit分类
机械制造引用本文复制引用
陈伟,于洪杰,吴志伟,钱才富..带矩形切向接管圆柱壳极限承压能力分析[J].压力容器,2026,43(2):61-70,10.基金项目
中央高校基本科研业务费项目(PY2513) （PY2513）
