波纹管阀门的密封结构及其影响因素_巫宗萍.pdfVIP

学术交流 ACADEMIC COMMUNICATION 理论/ 研发/ 设计/ 制造 波纹管阀门的密封结构及其影响因素 巫宗萍，宿林杨， 羊海涛 （中国工程物理研究院总体工程研究所，四川绵阳621900） 摘 要：文中根据波纹管阀门的使用环境和功能要求，确定了阀门的主要结构材料，设计了阀门的内、外密封结构。在阀 门的内密封结构上，采用形如刀口的平面密封，具有平面密封的特点，同时密封轴向力适中；在阀门的外密封结构上，采 用与外界无漏点的波纹管密封。同时，内密封性能是波纹管阀门的一个重要技术指标，在研究波纹管阀门内密封的密封 机理基础上，分析了波纹管阀门内密封性能的影响因素，如介质的物理性质、密封副质量、表面粗糙度、密封宽度、密封 比压等，可为波纹管阀门的设计提供理论依据。 关键词：波纹管阀门；密封结构；影响因素 中图分类号：TH134 文献标识码：A 文章编号：1002－2333 （2011）07－0048－03 Sealing Structures and Influencing Factors of Corrugated Tube Valves WU Zong-ping ， SU Lin-yang ， YANG Hai-tao （Institute of System Engineering, China Academy of Engineering Physics, Mianyang 621900, China） Abstract ： In this paper, according to applied environment and function of corrugated tube valve, the major structure materials in valve were selected, and the proper sealing structures were confirmed. The inside sealing structure of valve were plane sealing with blade shape, which could realize large ventilate areas with little unseal height. The outside sealing structures of valve were corrugated tube sealing without leakage point. Meanwhile, inside sealing properties were an important technique index for corrugated tube valve. Based on the research on inside sealing mechanism of corrugated tube valve, the major influencing factors were analyzed, such as physical property of medium, seal pair quality, surface roughness, seal width, seal specific pressure etc. The research results could provide theoretics bases for design of corrugated tube valve. Key words ： corrugated tube valve; sealing structure; influencing factor 1 引 言 动，阀杆上的阀头随之向下移动压紧密封面，阀门关闭； 随着现代工业的发展，对阀门的密封可靠性提出了 开启阀门时，提升阀杆，