橡胶水封接头可靠性提高技术与性能试验  

Reliability improvement technology and performance test of rubber water seal joint

作　　者：闫晓青 汤伟毕 陈露露 YAN Xiao-qing;TANG Wei-bi;CHEN Lu-lu(Three Gorges Navigation Authority,Yichang 443000,China)

机构地区：[1]长江三峡通航管理局,湖北宜昌443000

出　　处：《水运工程》2023年第1期132-136,共5页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2016YFC0402007)。

摘　　要：针对三峡升船机下闸首工作大门充压水封存在接头质量差、强度低等问题,为了减少充压水封对下闸首工作大门整体使用性能的影响,综合考虑充压水封运输及现场安装条件,对充压水封接头成型方法进行优化,提出了橡胶水封“分段填模、整体成型”的新接头成型方法。采用两种不同接头成型方法制作了充压水封接头试样,对充压水封接头部位试样进行了孔隙率测定,并开展拉伸特性与抗冲磨性能试验。试验结果表明:“分段填模、整体成型”的橡胶水封接头成型方法可大幅提高充压水封接头质量和强度,延长充压水封服役寿命,且对充压水封硬度及其它机械物理性能影响较小。In view of the poor joint quality and low strength of the pressurized water seal for the working gate of the lower lock head of the Three Gorges ship lift,we need to reduce the impact of the pressurized water seal on the overall service performance of the working gate of the lower lock head.Hence,this paper optimizes the molding method of the pressurized water seal joint by comprehensively considering the transportation and on-spot installation conditions of the pressurized water seal.As a result,we propose a new joint molding method of rubber water seal with“mold feeding by sections and forming as a whole.”Specifically,we adopt two different molding methods to make samples of the pressurized water seal joint,measure the porosity of the samples,and test their tensile properties and abrasion resistance.The results reveal that the molding method of“mold feeding by sections and forming as a whole”could prolong the service life of the pressurized water seal by substantially improving its quality and strength,with little impact on its hardness and other mechanical and physical properties.

关 键 词：三峡升船机 充压水封 分段填模、整体成型 接头可靠性 拉伸性能 

分 类 号：U642.7[交通运输工程—船舶及航道工程]