GAO Xiang1, LU Shengyang1, GAO Xin1, et al. ABNORMAL VIBRATION ON A 300 MW GENERATING UNIT WITH STEAM TURBINE:CAUSE ANALYSIS AND DISPOSAL[J]. Thermal power generation, 2012, 41(12): 96-97.
GAO Xiang1, LU Shengyang1, GAO Xin1, et al. ABNORMAL VIBRATION ON A 300 MW GENERATING UNIT WITH STEAM TURBINE:CAUSE ANALYSIS AND DISPOSAL[J]. Thermal power generation, 2012, 41(12): 96-97.DOI:
300MW机组异常振动原因分析及处理
摘要
针对某300MW机组在降负荷时振动突然增大的原因进行了分析。结果表明
引起该故障的原因为调节阀的喷嘴开启顺序设计不合理。通过实施调节阀开启顺序优化
将原调节阀喷嘴开启顺序由1、4→5→6→2→3调整为1、6→5→4→2→3后
在不停机的状态下处理了振动故障
保证了机组的安全稳定运行。
Abstract
Shafting vibration suddenly increased on a 300 MW unit during the load descending.Unreasonable opening sequence of the control valve was considered as the main reason after analysis.Thus
the original opening sequence 1
4→5→6→2→3 was adjusted and replaced by 1
6→5→4→2→3.The optimization handled the vibration without shutdown