摘要
某电站300MW机组1000m3大型钢制薄壳澄清水池(缓冲水池)池壁壳体在满水位工况下严重变形,有失稳垮塌的危险。对此,采用ANSYS有限元软件建立了水池三维有限元模型,对应力强度进行了计算分析,并依据JB4732-1995《钢制压力容器——分析设计标准》进行了应力强度评定。结果表明,澄清池筒体与锥壳连接区域、立柱与锥壳连接区域没有整体补强,造成水池局部强度不足,导致应力超标,局部变形较大。
Serious deformation of pond wall has appeared under full water level in a large clarified water pond of 1 000 ma made out from steel thinsheel for 300 MW unit in one power plant, having risk to lose stability and collapse. For this,a three - dimmensional finite element model of said pond has been established by using the finite element software ANSYS,and the stress strength being calculated and analysed,and the stress shtrength being evaluated according to JB4732- 1995 《steel made pressure vessel analysis and design））. Results show that the integral reinforcement in joint area of barrel shell and conical shell,as well as in joint area of column and conical shell,haven＇t been carried out,resulting in local insufficient strength of the water pond, leading to exceeding set standard of stress, making the local deformation to be enlarged.
出处
《热力发电》
CAS
北大核心
2009年第10期33-37,共5页
Thermal Power Generation
关键词
电站
300MW机组
澄清池
池壁变形
压力容器
应力分析
有限元
强度评定
power plant
300 MW unit
clarified water pond
pond wall deformation
pressure vessel
stress analysis
strength evaluation
作者简介
王必宁（1979-），男，湖南宁乡人，2004年毕业于西北工业大学工程力学系，硕士，主要从事电站关键部件结构强度分析、管道振动诊断分析与控制、压力容器和压力管道强度计算分析及安全性评定。E—mail：wangbining@tpri．com.cn
