水泵水轮机主轴密封及烧损故障处理  

Main shaft seal and burn-out accident treatment of pump turbines

作　　者：程云山[1] 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098

出　　处：《水利水电科技进展》2007年第6期44-48,89,共6页Advances in Science and Technology of Water Resources

基　　金：江苏省普通高校研究生科研创新计划项目(CX07B-134Z)

摘　　要：大容量、高转速水泵水轮机主轴密封相对常规水轮机主轴密封更容易发生故障。分析3种典型水泵水轮机主轴密封即平衡式流体静压径向双端面机械密封、非平衡水压自调整轴向式分瓣机械型平面密封、弹簧复位式浮动型双端面机械密封的结构、工作原理和故障发生原因,提出了这3种水泵水轮机主轴密封的故障处理方法。The main shaft seal of pump turbines with large capacity at high rotational speed is more liable to failure as compared with that of conventional pump turbines. The structure, operational principle, and cause of failures of three types of main shaft seal were analyzed, including the dual-end face mechanical seal in radial direction by balanced static pressure of fluid, the mechanical plane seal in petals in axial direction by self-regulated non-balanced water pressure, and fluctuated dual-end face mechanical seal by spring repesition. Finally, the methods for failure treatment of the three kinds of main shaft seal were put forward.

关 键 词：水泵水轮机 主轴密封 故障处理 

分 类 号：TK730.8[交通运输工程—轮机工程]