ABNORMAL VIBRATION ON A 300 MW GENERATING UNIT WITH STEAM TURBINE:CAUSE ANALYSIS AND DISPOSAL

GAO Xiang1; LU Shengyang1; GAO Xin1; ZHANG Weijiang1; BING Hankun2 1.Hebei Electric Power Research Institute; Shijiazhuang 050021

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ABNORMAL VIBRATION ON A 300 MW GENERATING UNIT WITH STEAM TURBINE:CAUSE ANALYSIS AND DISPOSAL

Thermal Power Generation Vol. 41, Issue 12, Pages: 96-97(2012)

更新时间：2025-09-28

- ABNORMAL VIBRATION ON A 300 MW GENERATING UNIT WITH STEAM TURBINE:CAUSE ANALYSIS AND DISPOSAL
- 作者机构：
  
  1. 河北省电力研究院
  2. 华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK268
- Published：2012
- 稿件说明：
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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：

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：

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

so the safety operation of unit was ensured.

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