简介:摘要: 麻石水力发电厂位于珠江流域柳江支流融江中游的麻石村附近,电厂为低水头河床式电站,目前安装三台立轴转桨式机组,装机容量 108.5MW。麻石电厂 1972年建成开始发电, 2号机、 3号机为罗马尼亚进口机组,发电机为半伞式 HVS840/100-56型发电机, 2003-2004年两台机组定子更新改造,
简介:摘要汽轮发电机组润滑油系统是保证汽轮发电机组安全运行的重要系统。由于人为操作不当导致系统故障或不能正常供油,将导致发电机组异常振动跳闸,甚至发生严重的轴承断油燃烧事故。在全国各地,在汽轮机运行或调试过程中,因烧瓦引起的事故较多,断油原因也不尽相同。本文所讲述的汽轮机烧瓦事故,其主因是DCS断电油泵不能连锁自动启动,现象实为罕见,特殊性较强,本次事故的基本情况是江铜铅锌CRN10-3.6/0.785/0.3机组运行中UPS电源发生烧板故障造成,DCS突然断电,仪表柜房异响并伴有焦糊味,汽轮发电机跳机,在转子惰走过程中,发生交、直流油泵同时不能自启,有3min时间轴承断油,使轴瓦烧坏,产生严重安全生产后果。事故发生后,工艺、设备等有关方面迅速采取有效应对措施,组织多方对事故原因进行分析,并成立检修组织机构,编制检修方案,改进控制措施,有效预防断油事故发生。
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