基于扬程的水泵运行失效监控系统设计摘 要大型水泵机组是大型泵站的关键设备 为了掌握机组的可靠耐久性，对机组故障进行了统计分析，遴选出机组关键易损部件: 水泵导轴承叶轮叶片电机定子电机推力轴承; 确定主要失效模式: 水泵导轴承磨损，叶片汽蚀断裂，电机定子绝缘老化和推力轴承烧损 分析确定了各易损部件主要失效模式的失效判别标准 本文成果对提高大型水泵机组可靠耐久性，指导泵站维护管理，合理确定机组大修周期有重要意义关键词: 大型水泵机组; 易损部件; 失效模式; 判别标准AbstractLarge water pump units are key equipment of large pumping stations． In order to master there liability and durability of the units，statistics analysis was performed about faults of the units; the guide bearing of the pump，the blade of the impeller and the motor stator were selected as the key damageable parts; the main failure modes were determined as: wear of the guide bearing，cavitation and fracture of the blade，insulation aging of the motor stator and burnout of thrust bearings of the motor ． The failure criteria of the key damageable parts were investigated and determined ． The results of this paper is significant for improving the reliability and durability of large pump units ， guiding maintenance and management of pump stations and determining rational overhaul cycle of pump units．Keywords:large pump units; damageable parts; failure modes; discrimination criteria目录摘 要.....................................................1第一章 引言...............................................41.1 课题来源及研究意义.................................41.2 国内外杨程水泵运行失效监控研究及应用概况...........41.3 本文的主要研究内容.................................5第二章 基于扬程水泵运行失效监控系统设计总体结构...........52.1 扬程水泵运行失效监控概述...........................52.2 扬程水泵运行失效监控结构设计.......................62.3 PLC 技术应用分析..............
