600MW机组调节系统伺服阀的在线更换

文档编号:RN041  文档字数:11162,页数:28

摘    要
 电液伺服阀是汽机调速系统的关键部件，其工作可靠性将直接影响到机组的安全稳定运行。本文阐述锦能发电公司600MW汽轮机液压控制系统伺服阀出现的故障分析及在线隔离更换的方法、步骤及维护注意事项。通过对调速系统的研究以及检测电液伺服阀的经验，发现调速系统中的许多故障如调门摆动、拒开、拒关等均与电液伺服阀的工作状况有关。分析了锦能发电公司汽轮机电液伺服阀突然关闭故障的原因，介绍了锦能公司对电液伺服阀的检修管理经验与方法，对其它大型汽轮机电液伺服阀的运行、维护具有借鉴意义。
 文档类型：应用基础
 关 键 词： 汽轮机　伺服阀　应用　更换
                                                                            
 
 ABSTRACT

Servo Valve Steam Turbine Control System is a key component of the reliability of their work will directly affect the unit's safe and stable operation. In this paper, power generation company Kam 600MW Steam Turbine servo valve hydraulic control system malfunction analysis and line isolation replacement methods and procedures and maintenance considerations. Through the research and detection speed control system servo valve experience, speed control systems found in many of Gu Zhang Ru tone Men swing, and refused to open, reject Guan etc, working conditions in the electro-hydraulic servo valve. Analysis of steam turbine power generation companies Kam servo valve can be closed into the causes of sudden, introduced the company's electro-hydraulic servo valve Kam to a maintenance management experience and methods, other large steam turbine electro-hydraulic servo valve operation and maintenance of a reference.

TYPE OF THESIS: Application Foundation

KEY WORDS: Turbine  Servo valve  Application  Change

 
目  录
摘    要 I
目  录 V
引言 33
1、故障情况说明 4
2 汽轮机DEH系统的简介 6
2.1概述： 6
2.2保安系统： 6
2.3液压伺服系统 9
2.4 EH油供油系统 10
2.5汽轮机调门液压控制单元 10
3、故障原因分析 13
3.1　DEH控制系统软件故障  3.2　电液伺服阀本身故障 13
3.3、快速卸荷阀常见故障 　 14
3.5　其它故障  　　 15
4、伺服阀的隔离、更换 16
4.1伺服阀隔离、更换步骤： 16
4.2伺服阀隔离、更换注意事项 17
4.3 维护措施    4.3.1　加强抗燃油系统运行管理和监督   17
5 汽轮机DEH调节系统的检修工艺 19
5.1通用液压元件的检修特点 19
5.2调速系统各部件通用的检修基本要求： 19
6 结束语 20
致    谢 21
参考文献 23
附    录 25

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