| 超临界600MW机组检修后振动分析及处理 |
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| 引用本文： | 刘石,刘兴久,冯永新.超临界600MW机组检修后振动分析及处理[J].振动．测试与诊断,2009,29(4):406-409. |
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| 作者姓名： | 刘石 刘兴久 冯永新 |
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| 作者单位： | 1. 广东省电力工业局试验研究所,广州,510600
2. 大唐潮州发电厂潮州,515723 |
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| 基金项目： | 国家自然科学基金资助项目，广东电网公司科研资助项目 |
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| 摘 要： | 对某国产超临界600MW汽轮发电机组的检修中,仅将2号低压缸进行了揭缸检查.修后启动中低压缸和发电机转子轴振动远大于修前,并超过报警值.振动分析表明,因机组轴系中心变化引起轴承载荷分配不一致导致了振动,并伴有碰磨故障.为了节省停机处理的时间,需在消除碰磨点后,通过现场全息动平衡方法将各瓦轴振动降至合格.
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| 关 键 词： | 振动 诊断 动平衡 全息谱 超临界机组 |
Vibration Problem Study on an Overhauled 600 MW Supercritical Power Unit |
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| Liu Shi,Liu Xinjiu,Feng Yongxin,Liu Yongsheng,Zhu Jun,Xiao Xiaoqing,Wang Dong.Vibration Problem Study on an Overhauled 600 MW Supercritical Power Unit[J].Journal of Vibration,Measurement & Diagnosis,2009,29(4):406-409. |
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| Authors: | Liu Shi Liu Xinjiu Feng Yongxin Liu Yongsheng Zhu Jun Xiao Xiaoqing Wang Dong |
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| Abstract: | After opening the No. 2 low-pressure cylinder for overhauling a 600 MW supercritical unit, the vibrations of the cylinder and generator exceeded the values before overhauling and the alarm threshold value. The data analysis shows that the change of bearing-load distribution due to adjusting alignment is the main reason resulting in serious vibrations. In order to saving the repair time, the field holo-balancing is used for damping the vibrations of all bearings to standard limits. |
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| Keywords: | vibration diagnosis dynamic balancing supercritical unit holo-spectrum |
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