摘要
基于有限元分析软件对采用变径管结构设计的补偿器进行了应力分析,并依据分析设计方法进行了强度校核,同时分析了半顶角和折边圆弧R的大小对结构受力影响。结果表明:变径管厚度可参考GB/T 150.3—2011中受内压折边锥壳厚度计算方法,但是考虑到预热安装管道使用的补偿器承受的轴向力大,建议通过有限元分析来进一步校核以提高产品的安全性和经济性。预热安装管道用补偿器结构采用变径管设计时,von Mises应力随着折边圆弧R的增大有所下降,但是降低幅度不大,从R110增大至R190等效应力下降比例约为5%;von Mises应力随着随着半顶角的增大而增大,近线性变化。预热安装管道用补偿器设计时可优先选择较小半顶角,而折边圆弧R可根据成形工艺确定合适的参数。
The stress of the compensator designed with reducer pipe structure was analyzed by the finite element analysis software,and the strength check was carried out according to the design-by-analysis method.At the same time,the influence of the size of the semi-apex angle and the flanged arc R on the structural force was analyzed.The analysis results show that the thickness of the reducer pipe can refer to the calculation method of the thickness of the flanged conical shell under internal pressure in GB/T 150.3—2011,however,considering the large axial force borne by the compensator used for preheating pipelines,it is suggested to further check by finite element analysis according to the design by analysis to improve the safety of the product.When the structure of the compensator used for preheating pipelines is designed with a reducer pipe,von Mises stress decreases somewhat with the increase of arc R,but the decrease is not large,and the equivalent stress decreases from R 110 to R 190 by about 5%.The von Mises stress increases with the increase of the semi-apex angle,and the change is nearly linear.It is suggested that the smaller semi-apex angle can be preferred in the design of the compensator used for preheating pipelines,and the appropriate arc R can be determined according to the forming process.
作者
占丰朝
李杰
杨玉强
ZHAN Fengchao;LI Jie;YANG Yuqiang(CSSC Sunrui(Luoyang)Special Equipment Co.,Ltd.,Luoyang 471000,China;Luoyang Ship Material Research Institute,Luoyang 471000,China)
出处
《压力容器》
北大核心
2023年第7期60-65,共6页
Pressure Vessel Technology
基金
洛阳市重大科技创新专项(2301018A)。
关键词
补偿器
变径管
应力分析
半顶角
compensator
reducer pipe
stress analysis
half top angle
