含凹坑球壳剩余强度的试验研究和安全评定  

Experimental Investigation and Safety Assessment on Remaining Strength of Spherical Shells with Pits

作　　者：陈虹港 李思源[2] 张玉福 李祚成 苗世得 CHEN Hong-gang;LI Si-yuan;ZHANG Yu-fu;LI Zuo-cheng;MIAO Shi-de(Machinery Industry Shanghai Lanya Petrochemical Equipment Inspection Institute Co.Ltd.,Shanghai 201518,China;Lanzhou Petroleum Machinery Research Institute Co.Ltd.,Lanzhou 730050,China)

机构地区：[1]机械工业上海蓝亚石化设备检测所有限公司,上海201518 [2]兰州石油机械研究所有限公司,甘肃兰州730050

出　　处：《石油化工设备》2021年第6期1-8,共8页Petro-Chemical Equipment

基　　金：国家质检总局科技计划项目(2013zjjz074)。

摘　　要：采用Q345D钢制作了含凹坑球壳试件,在内压试验下测定试件失效的塑性最大压力和爆破压力,得到了含凹坑球壳试件失效的塑性最大载荷剩余强度系数试验值RSFmt。应用RSFmt检验了一种剩余强度系数计算方法。利用球壳和球面凹坑尺寸的参量α、g对剩余强度系数计算值进行拟合,建立了含球面凹坑球壳的剩余强度系数RSF(α,g)计算式和爆破压力计算式。提出了含凹坑球壳的安全判据和含表面缺陷球形容器的安全评定方法。Experimental investigation on a batch of spherical shell specimens with pits made of steel Q345D by internal pressure has been completed,by means of which the test values of maximum plastic load remaining strength factor RSFmt have been obtained.One calculation method has been examined based on RSFmt.The calculation formulas for remaining strength factor RSF(α,g)and burst pressure of spherical shells with spherical pits have been established by fitting calculated values of remaining strength factor in terms of two dimension parametersαand g.An assessment criteria for spherical shells with spherical pits has been proposed and an evaluation method for spherical vessels with surface defects has been established.

关 键 词：球形容器 凹坑 缺陷 剩余强度系数 试验研究 安全评定 

分 类 号：TQ053.2[化学工程] TE972[石油与天然气工程—石油机械设备]