超超临界汽轮机组汽流力对振动影响的分析及试验研究

江栋军; 沈德明; 罗世梁; 杨建刚

doi:10.19805/j.cnki.jcspe.2025.230709

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超超临界汽轮机组汽流力对振动影响的分析及试验研究

动力设备与系统 | 更新时间：2026-01-21

- 超超临界汽轮机组汽流力对振动影响的分析及试验研究
- Analysis and Experimental Research of Steam Flow Force Effect on Vibration of Ultra-supercritical Steam Turbine Unit
- 动力工程学报 2025年45卷第2期页码：225-231
- 作者机构：
  
  1. 东南大学能源与环境学院,江苏,南京,211189
  2. 南京科远智慧科技集团股份有限公司,江苏,南京,211106
- 作者简介：
  
  [ "江栋军(1996—),男,江苏南通人,硕士研究生,研究方向为动力机械及自动化" ]
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.230709
  中图分类号： TM621
- 网络出版：2025-02-15，
  
  纸质出版：2025
- 稿件说明：
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江栋军,沈德明,罗世梁,杨建刚. 超超临界汽轮机组汽流力对振动影响的分析及试验研究动力工程学报, 2025, 45(2): 225-231 https://doi.

org/10.19805/j.cnki.jcspe.2025.230709
江栋军,沈德明,罗世梁,杨建刚. 超超临界汽轮机组汽流力对振动影响的分析及试验研究动力工程学报, 2025, 45(2): 225-231 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.230709.

org/10.19805/j.cnki.jcspe.2025.230709 DOI：

摘要

针对某型1 000 MW超超临界汽轮机组1号轴承不稳定振动现象

通过试验观察主汽温偏差、汽缸偏移量、轴心位置等与振动波动之间的关联性。建立了汽流力计算模型

研究了不同工况下汽流力及其影响因素。结果表明:高压缸两侧主汽温偏差导致汽轮机级内周向做功不均匀

产生非均衡汽流力;主汽温偏差还会导致汽缸与转子产生偏移

进一步增大汽流力;主汽温偏差越大

汽流力越大;汽流力作用到转子上

改变了轴承载荷

引发不稳定振动;调节主汽温偏差可以消除机组不稳定振动。

Abstract

Aiming at unstable vibration phenomenon of No. 1 bearing of a 1 000 MW ultra-supercritical turbine unit

the relationship between main steam temperature deviation

cylinder offset

axis position and vibration fluctuation was observed by experiments. A computational steam flow force model was established to examine the steam forces under different working conditions and their influencing factors. Results show that the difference of main steam temperature on both sides of high pressure cylinder leads to uneven circumferential work in turbine stage and unbalanced steam flow force. The main steam temperature deviation will also cause the cylinder and rotor to offset

and further intensify the steam flow force. The larger the main steam temperature difference

the larger the steam flow force. The steam flow force acts upon the rotor

which changes the bearing load and causes unstable vibration. Adjusting the deviation of main steam temperature can eliminate the unit's unstable vibrations.

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Keywords

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