摘要
某石化公司ф9800mm焦炭塔是国内最大的焦炭塔,塔裙连接处采用一种新型焊接结构,投入使用8个月,在塔裙连接处的应力槽部位出现裂纹,文章针对裂纹产生部位建立有限元模型,进行应力分析及评定。结果表明,由于温度变化产生的热应力是导致出现裂纹的主要原因。
The ф9800mm coke tower of a petrochemical company is the largest one in China.The tower used a new welded structure to link the tower and skirt.After being put into use for eight months,it was found that there were cracks near the stress relief slots.This paper establishes the finite element model according to the parts where cracks appeared.It carries out stress analysis and assessment.The results indicate that the thermal stress caused by the change of temperature is the main reason for the cracks.
出处
《石油化工设备技术》
CAS
2012年第4期7-10,69,共4页
Petrochemical Equipment Technology
关键词
焦炭塔
裂纹
热应力
应力分析
Coke tower
Crack
Thermal stress
Stress analysis
