回转式空气预热器接触式柔性密封可靠性设计  

Reliability Design of a Contact Type Flexible Seal for Rotary Air Preheaters

作　　者：王庆峰[1] 何立东[1] 

机构地区：[1]北京化工大学诊断与自愈工程研究中心,北京100029

出　　处：《热能动力工程》2009年第4期470-475,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金资助项目(50675013);国家863高技术基金资助项目(2007AA04Z422);广东省教育部产学研结合基金资助项目(2007B090400114)

摘　　要：接触式柔性密封是针对回转式空气预热器泄漏问题的一种新技术,可靠性是接触式柔性密封性能的重要指标。基于ANSYS的可靠性设计方法,运用ANSYS的PDS模块,将有限元方法和可靠性设计理论相结合,对接触式柔性密封进行三维参数化建模,并编制APDL命令流,建立可靠性分析文件对接触式柔性密封进行了可靠性设计。在置信度为95%的情形下,接触式柔性密封的可靠性为96.91%。结果显示,接触式柔性密封的结构是可靠的,得到了各结构参数的设计范围,波厚和总长是影响接触式柔性密封的主要因素,对接触式柔性密封的设计与研究有一定的参考价值。Contact type flexible seal is a new technology for solving the air leakage problem of rotary air preheaters.Reliability is an important index for contact type flexible sealing performance.The authors have described the reliability design method based on ANSYS.By utilizing the PDS module of ANSYS and combining the finite element method with the reliability design theory,a model for the contact type flexible seal was established with three-dimensional parameters and an APDL instruction stream,formulated.A reliability analytic document was prepared to conduct a reliability design of the contact type flexible seal.Under the condition of a confidence level being assessed at 95%,the reliability of the contact type flexible seal attains 96.91%.It has been found that the structure of the contact type flexible seal is reliable.The design range of various structural parameters were obtained.The wave thickness and total length constitute the main factors affecting the contact type flexible seal.The foregoing can well provide a definite reference for the design and study of contact type flexible seals.

关 键 词：回转式空气预热器 接触式柔性密封 可靠性设计 ANSYS/PDS 

分 类 号：TK223.3[动力工程及工程热物理—动力机械及工程] O242[理学—计算数学]