太阳能接收器密封结构设计与应力场三维数值模拟  

Structural Design and Stress Field 3D Numerical Simulation for the Novel Sealing Device of Solar Receiver

作　　者：刘赟[1] 张红[1] 战栋栋[1] 孙磊[1] 庄骏[1] 

机构地区：[1]南京工业大学能源学院,江苏省南京市210009

出　　处：《中国电机工程学报》2010年第11期115-120,共6页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2006AA05Z419);江苏省2008年度普通高校研究生科研创新计划项目(CX08B_065Z)~~

摘　　要：在槽式直接产蒸汽(directsteam generation,DSG)太阳能热发电系统中,传统接收器的密封装置存在结构复杂、造价昂贵等问题。为解决这些问题,研制了新型法兰机械密封结构,详细介绍了该密封装置的结构。为分析此密封结构的可靠性,利用有限元分析软件ABAQUS的热-力耦合功能,对工作过程中法兰盖板的温度场和应力场进行了数值模拟。分析结果表明,最大的应力变化出现在法兰盖板中心的热影响区,对盖板表面裂纹有主要的影响,最大应力小于材料的许用应力235MPa。In direct steam generation （DSG） parabolic trough solar generation plants, there used many receivers. In order to solve the complex configuration and high cost of the sealing device in the medium solar receiver, a novel configuration and an independent-design sealing device was developed. By using thermal-stress coupling function of the large finite element method software ABAQUS, a numerical simulation of temperature field and stress field of flange plate in working was made. The analysis shows that, the maximum stress change appears in the heat affected zone of the flange＇s center and it has main influence on surface crack of flange plate and the maximum stress is less than the allowable stress 235 MPa of the material, which is in the reliable range.

关 键 词：太阳能接收器 新型密封结构 热管 应力 三维数值模拟 

分 类 号：TK519[动力工程及工程热物理—热能工程]