摘要
针对广东省某压力容器制造厂生产的常减压炼油装置中一台在用油气储罐制造缺陷问题,应用ANSYS数值模拟仿真软件分析此类型压力容器工作时主要应力集中状况。对内凹和外凸为3、5、8、11 mm的容器进行静力学分析,分析结果表明容器越厚越安全,外凸比内凹更危险,并且根据现场检验发现的表面裂纹缺陷与模拟分析对比,结果表明:等壁厚的压力容器存在内凹或外凸缺陷时,缺陷尺寸与应力和应变呈线性增长;容器内凹及外凸缺陷会大大提高压力容器的运行风险,并且外凸缺陷更容易使容器在运行时产生缺陷,从而导致失效;通过现场检验发现缺陷位置与容器内应力集中分布位置基本一致。试验验证了应用数值模拟仿真计算对在役缺陷压力容器安全性能研究的经济性与可靠性,为规范容器设计制造、保障企业安全生产、提升检验检测能力提供了理论依据。
In order to solve the manufacturing defect problem of an in-use oil and gas storage tank in the atmospheric and vacuum oil refining unit produced by a pressure vessel manufacturing plant in Guangdong,ANSYS numerical simulation software is used to analyze the main stress concentration of this type of pressure vessel during operation.The static analysis is carried out on the containers with concave and convex inner and outer surfaces of 3,5,8 and 11 mm.The analysis results show that the thicker the container,the safer it is,and the convex outer surface is more dangerous than the concave inner surface.According to the comparison between the surface crack defects found in the field inspection and the simulation analysis,the results show that when the pressure vessel with equal wall thickness has concave or convex defects,the defect size and stress and strain increase linearly.The concave and convex defects of the vessel greatly increase the operation risk of the pressure vessel,and the convex defects are more likely to cause defects in the vessel during operation,resulting in the risk of failure.Through on-site inspection,it is found that the location of the defect is basically the same as the concentration of stress in the container.The test verifies the economy and reliability of the application of numerical simulation calculation to the study of the safety performance of in-service defective pressure vessels,and provides a theoretical basis for standardizing the design and manufacture of containers,ensuring the safe production of enterprises,and improving the inspection and testing capabilities.
作者
瞿全炎
叶翠琳
张炳雷
李瑞宇
Qu Quanyan;Ye Cuilin;Zhang Binglei;Li Ruiyu(Guangdong Institute of Special Equipment Inspection and Research,Foshan,Guangdong 528251,China;Guangdong Institute of Special Equipment Inspection and Research Shunde Branch,Foshan,Guangdong 528300,China)
出处
《机电工程技术》
2025年第23期34-38,89,共6页
Mechanical & Electrical Engineering Technology
基金
佛山市自筹经费类科技创新项目(240001004747)。
关键词
数值模拟仿真
压力容器
裂纹缺陷
内应力
numerical simulation
pressure vessel
crack defect
internal stress
