1 050 MW汽轮发电机组振动故障分析及治理Analysis and Treatment of Vibration Fault of a 1 050 MW Steam Turbine Generating Unit
李卫军,应光耀,王异成,吴文健,钱林锋,马思聪,蔡文方
LI Weijun,YING Guangyao,WANG Yicheng,WU Wenjian,QIAN Linfeng,MA Sicong,CAI Wenfang
摘要(Abstract):
在某2×1 050 MW燃煤电厂1号机组基建调试中,5号、6号轴承振动严重超标,且不稳定,影响了工程进度。通过振动测试分析发现:低压缸B存在严重动静碰磨和热不平衡,导致5号轴承振动偏大;6号轴承动刚度较低,发电机定子底部载荷分配较差,导致6号轴承振动偏大,且不稳定。通过基于碰缸试验的动静间隙调整、基于发电机定子底部载荷试验的定子垫片调整、现场轴系动平衡等措施综合治理,消除了振动故障,提高了机组运行稳定性。部分治理经验成功应用于该发电厂2号机组的振动预防,表明该案例具有较好的工程参考价值。
During the capital construction commissioning of unit No.1 of a 2×1 050 MW coal-fired power plant,vibration of bearings No.5 and No.6 exceeded the set standard and become rather unstable,holding up the project. Through vibration test and analysis,it is found that: 1)there are dynamic and static collision and thermal imbalance in low-pressure cylinder B,resulting in excessive vibration of bearing No.5;2)the bottom load distribution on the generator stator is poor,and the bearing No.6 has a weak dynamic stiffness,resulting in excessive and unstable vibration. Through comprehensive treatment measures,such as the dynamic and static clearance adjustment based on the cylinder impact test,the stator gasket adjustment of the bottom load test of the generator stator,and field dynamic shafting balancing,the vibration fault is controlled,and the operational stability of the unit is improved. Part of the treatment experience has been successfully applied to the vibration prevention of unit.2,which indicates that this case can be employed as a good engineering reference.
关键词(KeyWords):
汽轮发电机组;载荷分配;碰磨;碰缸;动平衡
steam turbine generating unit;load distribution;collision;cylinder impact;dynamic balance
基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211DS21003);; 杭州意能电力技术有限公司科技项目(EPRD2020-06)
作者(Author):
李卫军,应光耀,王异成,吴文健,钱林锋,马思聪,蔡文方
LI Weijun,YING Guangyao,WANG Yicheng,WU Wenjian,QIAN Linfeng,MA Sicong,CAI Wenfang
参考文献(References):
- [1]宾光富,姚剑飞.单支撑1 000 MW汽轮机支承动力特性对轴系振动的影响[J].动力工程学报,2018,37(10):796-800.
- [2]夏亚磊,吴亚军,张文涛.柔性支撑下汽轮机组振动响应特性分析[J].热能动力工程,2021,36(6):157-163.
- [3]李立波,康剑南,翁振宇,等.1 000 MW超超临界N+1轴系稳定性浅析[J].汽轮机技术,2018,60(5):382-384.
- [4]郭玉杰,张小科,王照翔,等.汽轮发电机组低速碰磨特征分析与处理[J].汽轮机技术,2016,58(5):380-383.
- [5]王勇.1 000 MW机组低压缸轴瓦振动故障原因分析及治理[J].东方汽轮机,2018,3(9):76-80.
- [6]崔亚辉,姚剑飞,徐亚涛,等.西门子1 000 MW汽轮机组轴系碰磨故障特性研究[J].中国电力,2020,53(6):133-138.
- [7]吴文青,谢诞梅,杨毅,等.具有初始弯曲的1 000 MW汽轮机低压转子的振动特征分析[J].振动与冲击,2014,33(17):151-154.
- [8]关春潮,王峰,谌丽.1 000 MW汽轮机启、停过程中防止轴封抱死的措施[J].华电技术,2011,33(6):47-49.
- [9]张学延,张卫军,何国安.火电厂旋转机械振动诊断及治理技术[M].北京:中国电力出版社,2019:319-324.
- [10]冯坤.1 000 MW超超临界机组发电机调试期间振动问题的分析及处理[J].华电技术,2019,41(12):41-45.
- [11]付灿平,高嵩,王善雷.1 000 MW发电机组轴瓦异常振动原因分析及处理[J].浙江电力,2021,40(7):79-83.
- [12]朱晓强,刘新技,李万东,等.国华印尼爪哇7号2×1 050MW燃煤发电工程大件吊装[J].工程机械与维修,2020(5):27-31.
- [13]柴岩,钟良,杨建刚.汽轮机低压缸轴承座振动分析和动平衡试验研究[J].汽轮机技术,2017,59(1):50-52.
- [14]吴亚军,杨建刚,曹忠勋.支撑刚度对汽轮机组轴承座振动影响分析[J].电站系统工程,2017,33(6):54-56.
- [15]叶明.350 MW机组电动给水泵组故障分析及对策[J].山西电力,2021(6):50-53.
- [16]明亮,陈瑞山,张伟.350 MW超临界汽轮机高中压转子永久弯曲的故障治理[J].山西电力,2021(5):48-51.
- [17]傅质馨,曹延,朱俊澎,等.基于MI-GA-BP和误差统计分析的水电机组健康评估模型研究[J].电网与清洁能源,2021,37(7):97-106.
- [18]何伟,万天虎,马涛,等.补气对尾水涡带及机组振动特性的影响分析[J].电网与清洁能源,2021,37(4):101-106.
- [19]沈春和,文贤馗,曾癸森,等.基于大数据技术的小水电机组负荷分配优化平台研究及应用[J].电力大数据,2021,24(1):9-16.
- [20]段学友,周菁,贾斌,等.660 MW机组汽动给水泵系统试运问题分析及处理[J].内蒙古电力技术,2020,38(2):34-37.
- [21]陈晓云,吴广宽,刘胜柱,等.混流式水轮机功率异常波动成因分析[J].电网与清洁能源,2020,36(2):98-102.
- 汽轮发电机组
- 载荷分配
- 碰磨
- 碰缸
- 动平衡
steam turbine generating unit - load distribution
- collision
- cylinder impact
- dynamic balance