5000 m^(3)真空球罐新开DN1000孔后安全性能差异性研究  

The Safety Performance Difference of 5000 m^(3)Vacuum Spherical Tank after Adding DN1000 Hole

作　　者：侯峰伟[1] 薛睿渊 舒海峰[1] 王南天 杨方奎 张希恒[2] HOU Fengwei;XUE Ruiyuan;SHU Haifeng;WANG Nantian;YANG Fangkui;ZHANG Xiheng(Hypervelocity Aerodynamics Institute of China Aerodynamics Research and Development Center,Sichuan 621000,China;School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]中国空气动力研究与发展中心超高速空气动力研究所,四川621000 [2]兰州理工大学石油化工学院,兰州730050

出　　处：《真空科学与技术学报》2023年第10期834-840,共7页Chinese Journal of Vacuum Science and Technology

摘　　要：某在役风洞5000 m^(3)真空球罐需要新增一个DN1000孔,对新增开孔前后球罐强度、刚度和差异性展开研究,对比各类补强方案的补强效果,得到以下结论:新增开孔将降低球罐整体的刚度和使用寿命,但影响程度有限。增加新开孔的引出管壁厚对球罐整体刚度补强效果明显,只降低自身开孔处的应力峰值;补强圈能够有效降低开孔后原有其他孔部位的应力峰值,对新增开孔后球罐使用寿命有明显的提升,但新开孔部位的局部应力、球罐刚度与补强圈宽度的关系是非单调的,补强圈宽度不宜过宽。研究成果证明某在役风洞5000 m^(3)真空球罐新增DN1000开孔后其性能依然满足设计要求,同时为超大容积真空球罐补强方案的制定提供了理论支撑。An in-service wind tunnel vacuum spherical tank needs to add a DN1000 hole.The differences in strength,stiffness,and life of the spherical tank before and after adding holes were studied,and the reinforcing effects of various reinforcing schemes were compared.The following conclusions are obtained:additional holes will reduce the overall stiffness and service life of the spherical tank,but the impact is limited.Increasing the wall thickness of the hole outlet pipe has an obvious reinforcement effect on the overall stiffness and only reduces the stress peak at the opening point.The reinforcing ring can effectively reduce the stress peak of other parts of the original hole,and significantly improve the service life of the spherical tank after the newly opened hole.However,the relationship between the local stress of the newly opened part,the stiffness of the spherical tank and the width of the reinforcing ring is non-monotonic;the width of the reinforcing ring should not be too wide.The research results prove that the performance of the vacuum spherical tank still meets the design requirements after adding DN1000 hole,and provide theoretical support for the formulation of the super-large volume vacuum spherical tank reinforcement scheme.

关 键 词：风洞 真空球罐 开孔补强 有限元分析 

分 类 号：TB75[一般工业技术—真空技术]