双轴自清洁反应器“8”字壳开孔接管结构外压稳定性研究  

Stability of External Pressure in 8-Shaped Shell with Nozzle Structure of Biaxial Self-Cleaning Reactor

作　　者：魏子超 孙超 李庆生[1] 陆玮 WEI Zichao;SUN Chao;LI Qingsheng;LU Wei(School of Mechanical and Power Engineering,Nanjing University of Technology,Nanjing 211816,China;Jiangsu Special Equipment Safety Supervision Inspection Taizhou Branch Jingji ang Institute,Taizhou,Jiangsu 214500,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816 [2]江苏省特种设备安全监督检验研究院泰州分院靖江所,江苏泰州214500

出　　处：《轻工机械》2024年第5期20-26,共7页Light Industry Machinery

摘　　要：针对双轴自清洁反应器“8”字壳开孔接管结构承受外压过大时易发生失稳的问题,课题组提出采用有限元分析方法进行双轴自清洁反应器“8”字壳开孔接管结构外压稳定性研究,当接管中心线和“8”字壳垂直中心线的距离X分别取0.0a,0.4a和0.5a,径厚比D_(o)/δ_(e)分别取30,40,50,60和70,长径比L/D_(o)分别取2,3,4,5和6,开孔率d/D分别取010,0.25,0.40,0.55和0.70,接管壁厚和筒体壁厚比δ_(e)t/δ_(e)分别取0.2,0.6,1.0,1.4和1.8时,探究各结构参数与临界失稳压力削弱系数K的关系。研究结果表明:接管壁厚和筒体壁厚比δ_(e)t/δ_(e)和长径比L/D_(o)较小及开孔率d/D和径厚比D_(o)/δ_(e)较大时,开孔接管对“8”字壳外压承载能力削弱严重。Aiming at the problem of instability in the 8-shaped shell with nozzle structure of biaxial self-cleaning reactor under excessive external pressure,the finite element analysis method was used to investigate the external pressure stability of 8-shaped shell with nozzle structure of the biaxial self-cleaning reactor.When the distance between the nozzle centerline and the vertical centerline of the 8-shaped shell X was 0.0a,0.4a and 0.5a,D_(o)/δ_(e)was 30,40,50,60 and 70,L/D_(o)was 2,3,4,5and 6,d/D was 0.10,0.25,0.40,0.55 and 0.70,δ_(e)t/δ_(e)was 0.2,0.6,1.0,1.4 and 1.8,the relationship between various structural parameters and the critical destabilizing pressure weakening coefficient K was investigated.The results show that the external pressure bearing capacity of the 8-shaped shell of nozzle structure is significantly weakened for the smallerδ_(e)t/δ_(e),the smaller L/D_(o),the larger d/D,and the larger D_(o)/δ_(e).

关 键 词：双轴自清洁反应器 “8”字壳开孔 接管结构 外压稳定性分析 临界失稳压力削弱系数 

分 类 号：TH49[机械工程—机械制造及自动化]