U型密封结构的理论设计方法研究  

Research on Theoretical Design Method of U-seal Structure

作　　者：赵仕志[1] 陈晓平[1] 成露[1] 张晓东[1] ZHAO Shizhi;CHEN Xiaoping;CHENG Lu;ZHANG Xiaodong(Dongfang Turbine Co.,Ltd.,Deyang Sichuan,618000)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2020年第4期1-4,13,共5页Dongfang Turbine

摘　　要：透平机械主机参数不断提高,法兰连接结构的密封性问题日益突出。U型密封件是最常用的法兰密封结构。关于U型密封件的设计方法国内外很多学者已经做了大量研究工作,但是对其应力水平的理论分析方法还鲜有报道。文章基于简单的悬臂梁理论建立了U型密封件的理论模型,系统研究了U型密封件的密封紧力和应力分布规律,形成完整的U型密封结构的理论设计方法,并将设计结果与有限元计算结果进行比较,证明了计算模型的准确性。With the continuous improvement of the performance parameter of turbine machinery, the sealing problem of flange connection structure is becoming more and more serious. U-seal is the most commonly used flange seal structure. A lot of researches have done at home and abroad on the design method of U-seal, but the theoretical stress analysis is seldom reported. In this paper,the theoretical model of U-seal can established based on the simple cantilever beam theory, The sealing force and stress distribution law of U-seal are systematically studied to form a complete theoretical design method of U-seal, the accuracy of the calculation method is proved comparing the design results with the results of FEA calculation.

关 键 词：汽轮机 燃气轮机 U型密封件 理论设计 有限元 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]