汽动给水泵调门反馈杆断裂事故的分析与处理  

Fracture Analysis and Treatment of the Regulating Valve Feedback Rod of the Steam Feed Pump

作　　者：郑冬浩 柏元华 董勇卫 ZHENG Donghao;BAI Yuanhua;DONG Yongwei(Huaneng Changxing Power Plant,Changxing Zhejiang 313100,China)

机构地区：[1]华能长兴电厂,浙江长兴313100

出　　处：《浙江电力》2018年第9期54-59,共6页Zhejiang Electric Power

摘　　要：描述了某发电厂一台单列运行的汽动给水泵低压进汽调门由于门杆和LVDT连接件断裂引起的故障现象及其后续处理过程,通过对整个动态过程的分析,总结了处理该类故障的合理检修方法。同时,通过对控制系统和机械连接件的改进优化,有效预防了类似故障的再次发生。由于调门反馈联杆断裂在运行中时有发生,因此,这类事故的处理方法和预防措施对其他机组有一定的借鉴意义。This paper describes a fault of low-pressure inlet regulating valve caused by rod and LVDT connec-tor fracture and the following treatment in a single unit of a power plant. Through analysis of the whole dy-namic process,this paper summarizes the reasonable maintenance method to deal with such faults. At thesame time,through the improvement and optimization of the control system and mechanical connectors,simi-lar failures are effectively prevented. As the breakage of the feedback link of the valve occurs frequently inoperation,the treatment methods and preventive measures of this kind of accident have certain reference sig-nificance for other units.

关 键 词：超超临界机组 给水系统 调门反馈杆 故障分析 改进预防 

分 类 号：TK38[动力工程及工程热物理—热能工程]