防止汽轮机超速对抽汽逆止门逻辑的修改  

The logic revision about Steam Extraction Non - Return Valve against over - speed of steam turbine

作　　者：路永刚 

机构地区：[1]辽宁阜新金山煤矸石热电有限公司,辽宁阜新123006

出　　处：《锅炉制造》2012年第4期62-64,共3页Boiler Manufacturing

摘　　要：汽轮机超速事故是对电厂中发电设备破坏性最大的事故,所以发电企业对汽轮机超速的事故都尤为关注。2011年我厂#1、2机组由于发电机保护动作信号出现,机组ETS保护动作,在调阅SOE(事故追忆时)发现各抽汽逆止门关闭时间过长。后来通过对4台机组抽汽逆止门逻辑的整改,使抽汽逆止门关闭时间大大缩短。The over-speed accident of steam turbine will seriously destroy the generating equip-ments in electric power plant, the electrical generation enterprises pay great attention to the over- speed accident of steam turbine. In 2008 the ETS protection acted when the generator protection ap-peared in No 1 and 2 generator units, we found the shut time of steam extraction non-return valve was too long in reading sequence of event system. So the logic revision was taken to steam extraction non-Return valve in 4 units to reduce the shut time significantly.

关 键 词：汽轮机超速 抽汽逆止门 关闭时间 逻辑整改 

分 类 号：TK26[动力工程及工程热物理—动力机械及工程]