钢制内压容器安全系数与试验压力系数研究  

Research in safety factor and test pressure coefficient of steel wall intrinsic pressure vessel

作　　者：刘小宁[1,2] 潘传九[3] 刘岑[2] 李清[1] 吴元祥[1] 张红卫[1] 

机构地区：[1]武汉软件工程职业学院机械制造工程系,湖北武汉430205 [2]武汉工程大学机电工程学院,湖北武汉430074 [3]南京化工职业技术学院机械技术系,江苏南京210048

出　　处：《河北科技大学学报》2011年第4期321-325,共5页Journal of Hebei University of Science and Technology

基　　金：武汉市教育局重点科研项目(2008K027);武汉市创新人才开发资金重大创新专项资助项目

摘　　要：考虑钢制内压容器初始静强度和载荷的不确定性,应用信息熵理论,对容器安全系数、试验压力系数与可靠指标的关系进行探索。研究表明:1)钢制薄壁内压圆筒屈服安全系数应不小于1.50,抗拉安全系数应不小于1.90;钢制薄壁内压球形容器屈服安全系数应不小于1.40,抗拉安全系数应不小于2.15;扁平绕带式容器屈服安全系数应不小于1.45,抗拉安全系数应不小于2.40;超高压厚壁圆筒抗拉安全系数应不小于2.55。2)钢制内压容器试验压力系数在气压与液压试验时应不小于1.07。3)钢制薄壁内压圆筒试验压力系数在气压试验时应不大于1.20,在液压试验时应不大于1.35;钢制薄壁内压球形容器试验压力系数在气压试验时应不大于1.18,在液压试验时应不大于1.32;扁平绕带式容器试验压力系数在气压试验时应不大于1.24,在液压试验时应不大于1.41;超高压厚壁圆筒试验压力系数在液压试验时应不大于1.66。Due to the uncertainty of the steel wall intrinsic pressure vessel initial static intensity and the loads, based on the application of information entropy theory, the relationship of the safety factor, the test pressure coefficient and the reliable index were analyzed. The research indicates that： 1） For cylinder vessel, the yield safety factor should be no less than 1.50 and the burst safety factor no less than 1.90; for spherical vessel or spherical head, the yield safety factor should be no less than 1.40 and the burst safety factor no less than 2.15; for flat ribbon-wound pressure vessel, the yield safe factor should be no less than 1.45 and the burst safety factor no less than 2.40; for super-high pressure thick wall cylinder, the burst safety factor should be no less than 2.55. 2） The test pressure coefficient of steel wall intrinsic pressure vessel should be no less than 1.07 under barometrical and hydraulic pressure tests. 3） The test pressure coefficient of cylinder should not be greater than 1. 20 for barometrical pressure tests, and not greater than 1.35 for hydraulic pressure tests; the test pressure coefficient of spherical vessel should not be greater than 1.18 for barometrical pressure tests, and not greater than 1.32 for hydraulic pressure tests; the test pressure coefficient of flat ribbon-wound pressure vessel should be not greater than 1.24 for barometrical pressure tests,and not greater than 1.41 for hydraulic pressure tests~ the test pressure coefficient of super-high pressure thick wall cylinder should not be greater than 1.66 for hydraulic pressure tests.

关 键 词：内压容器 可靠指标 失效准则 安全系数 试验压力系数 

分 类 号：TH49[机械工程—机械制造及自动化] TQ051[化学工程]