基于欧盟压力容器规范的月牙肋钢岔管三维设计  

Three-Dimensional Design of Crescent-Rib Reinforced Branch Pipe Based on European Pressure Vessel Standard

作　　者：韩晓凤 HAN Xiaofeng(China Energy Engineering Group Guangxi Electric Power Design Institute Co.,Ltd.,Nanning,Guangxi,530007)

机构地区：[1]中国能源建设集团广西电力设计研究院有限公司,广西南宁530007

出　　处：《红水河》2021年第1期1-4,共4页Hongshui River

基　　金：中国能源建设集团规划设计有限公司科研项目(GSKJ2-S03-2019)。

摘　　要：针对涉外工程要求采用国外标准设计水电站钢岔管的需求,按照欧盟BS EN13445压力容器规范对老挝某水电站高水头月牙肋岔管进行了体形和结构设计。利用CATIA三维设计平台上开发的月牙肋岔管模板建立包含三个岔管的整体模型和含闷头的岔管独立模型,分别用有限元法模拟了正常运行和水压试验两种工况下的岔管结构应力分布,并按照弹性应力分类和评价标准进行复核。最终岔管设计采用了欧盟BS EN10025-6规范中的S690 QL高强钢,岔管最大管壳厚度64 mm,月牙肋厚度120 mm。有限元数值分析、工厂水压试验和工程运行情况都表明该设计是安全、经济的,设计方法可供类似工程设计和研究参考。According to the requirements of foreign engineering the shape and structure design of the high-head crescent-rib reinforced branch pipe of a hydropower station in Laos are carried out according to the European Pressure Vessel Standard BS EN 13445.The crescent-rib reinforced branch pipe template developed on CATIA 3D design platform is used to establish the overall model containing three branch pipes and the independent model of branch pipe with choke plug.The stress distribution of branch pipe structure under normal operation and hydrostatic pressure test conditions is simulated by finite element method respectively, and the results are reviewed according to the elastic stress classification and evaluation criteria.The S690 QL high strength steel in the BS EN10025-6 is used in the final design of the branch pipe.The maximum shell thickness of the branch pipe is 64 mm and the thickness of the crescent rib is 120 mm.The finite element numerical analysis ,factory hydrostatic pressure test and engineering operation show that the design is safe and economical,and the design method can provide reference for similar engineering design and research.

关 键 词：月牙肋钢岔管 三维体形设计 结构设计 欧盟压力容器规范 

分 类 号：TV732.4[水利工程—水利水电工程]