零出力改造非切缸工况汽机轴振大解决措施  

Countermeasures for Handling Large Vibration of Steam Turbine Shaft Under Non-cutting Cylinder Condition upon Zero-output Power Transformation

作　　者：张黎明 岳国华 王俊杰 韩永卿 田龙 杨其恒 王留生 ZHANG Liming;YUE Guohua;WANG Junjie;HAN Yongqing;TIAN Long;YANG Qiheng;WANG Liusheng(SPIC Nanyang Thermal Power Co.,Ltd.,Nanyang 473000)

机构地区：[1]国电投南阳热电有限责任公司,河南南阳473000

出　　处：《电力安全技术》2023年第5期47-49,共3页Electric Safety Technology

摘　　要：某电厂2号机低压缸零出力改造后,非切缸工况运行相继出现各瓦轴振大问题,通过分析排查找出了各瓦轴振大的原因,并提出当出现振动波动不稳定的随机性振动情况时,要确认是否使用有浮动油档以及排查测振探头支架刚度的建议,有助于针对性地开展快速排查分析。Upon the low-pressure cylinder transformation of Unit 2 in a power plant,large vibration occurred successively in each bush during its non-cutting cylinder conditions.The causes of shaft vibration are found out based on analysis and troubleshooting,and a suggestion,beneficial to rapidly investigate and analyze such problems,is put forward that once the vibration occurs unstably in random,it is necessary to confirm whether a floating oil lever is used,and to check the stiffness of the support for vibration probes.

关 键 词：低压缸 零出力改造 非切缸工况 轴振 

分 类 号：TM311[电气工程—电机]