汽轮机调节阀抖动故障分析与测速装置改进设计  

Turbine Control Valve Jitter Failure Analysis and Improved Design of Speed Measuring Device

作　　者：张鲲羽 张晶雪 姚飞毅 ZHANG Kunyu;ZHANG Jingxue;YAO Feiyi(Shanghai Marine Equipment Research Institute,Shanghai 200031,China)

机构地区：[1]上海船舶设备研究所,上海200031

出　　处：《机电设备》2020年第4期1-3,8,共4页Mechanical and Electrical Equipment

摘　　要：文章对某型汽轮发电机组在试验过程中出现的调节汽阀抖动故障进行了分析和处理,通过对比分析调速控制系统和动态测速仪的转速历史曲线,得出导致调节汽阀抖动的原因,即测速传感器的转速测量产生假信号。经过相应处理后,故障得以消除。在此基础上,对测速传感器的结构、安装方式和调速控制系统的门槛值设置进行了优化改进。The vibration fault of regulating steam valve occurred in the test of a certain type of steam turbine generator set is analyzed and processed.By comparing and analyzing the speed history curves of the speed control system and the dynamic speedometer,the reason leading to the jitter of the regulating steam valve is obtained,that is,the speed measurement of the speed sensor produces false signals.After corresponding treatment,the fault can be eliminated.On this basis,the structure of speed sensor,installation method and threshold setting of speed control system are optimized and improved.

关 键 词：调节阀 转速传感器 改进设计 

分 类 号：TK268.1[动力工程及工程热物理—动力机械及工程]