摘要
石化装置检修改造通常存在工期短、任务重、各施工环节严重交叉及施工难度大等问题。在某330万t/a常减压装置检修改造施工中,将核心钢结构框架拆分成几个模块,结合作业空间、装置停工周期等实际情况,利用大型吊装设备,采用大型模块化预制、整体吊装的思路,在有限场地内合理展开各施工工序,在常减压装置停车前即完成了70%以上的模块预制量。结合有限元模型对吊装模块进行分析,准确确定出了吊装模块的重心位置,设置了大型框架式吊装平衡梁,并对模块应力集中部位进行精准加固。采用大型模块化预制施工的时间仅为传统施工周期的1/3~1/2,在类似装置建设施工中具有推广应用价值。
The overhaul and transformation of petrochemical equipment is usually fraught with problems such as tight schedule,heavy workloads,severe overlapping of various construction elements,and high construction difficulty.In the overhaul and transformation construction of a 3.3 million t/a atmospheric and vacuum unit,the core steel structure frame was divided into several modules.Based on the actual conditions such as the working space and the shutdown cycle of the equipment,large-scale lifting equipment was rationally used,and large-scale modular prefabrication was adopted.The idea of overall lifting was adopted,and each construction process was rationally carried out in a limited space,and more than 70%of the module prefabrication was completed before the atmospheric and vacuum equipment was shut down.The lifting module was analyzed based on the finite element model,and the center of gravity of the lifting module was accurately determined,a large frame-type lifting balance beam was set up,and the stress concentration areas of the module were accurately reinforced.The construction time using large-scale modular prefabrication is only 1/3 to 1/2 of the traditional construction time,and it has promotion and application value in the construction of similar units.
作者
付晓锋
FU Xiao-feng(Jinxi Petrochemical Company,CNPC,Huludao 125001,China)
出处
《石油化工设备》
CAS
2024年第4期59-64,共6页
Petro-Chemical Equipment
关键词
常减压装置
模块化
预制
改造
吊装
有限元分析
atmospheric and vacuum unit
modular
prefabrication
transformation
hoisting
finite element analysis
