Vibration Test and Analysis of Dynamic Balancing without Test-mass on Multi-plane for a 350MW Turbo-generator Unit

WANG Yu; XU Weixuan; GUO Baoren

doi:10.3969/J.ISSN.2095-3429.2017.06.013

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Vibration Test and Analysis of Dynamic Balancing without Test-mass on Multi-plane for a 350MW Turbo-generator Unit

更新时间：2025-06-06

- Vibration Test and Analysis of Dynamic Balancing without Test-mass on Multi-plane for a 350MW Turbo-generator Unit
- Vol. 38, Issue 6, Pages: 53-56(2017)
- 作者机构：
  
  华电电力科学研究院,浙江,杭州,310030
- 作者简介：
- 基金信息：
- DOI：10.3969/J.ISSN.2095-3429.2017.06.013
  CLC： TM621.3
- Online First：30 December 2017，
  
  Published：2017
- 稿件说明：
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WANG Yu, XU Weixuan, GUO Baoren. Vibration Test and Analysis of Dynamic Balancing without Test-mass on Multi-plane for a 350MW Turbo-generator Unit[J]. 2017, 38(6): 53-56.
DOI：

WANG Yu, XU Weixuan, GUO Baoren. Vibration Test and Analysis of Dynamic Balancing without Test-mass on Multi-plane for a 350MW Turbo-generator Unit[J]. 2017, 38(6): 53-56. DOI： 10.3969/J.ISSN.2095-3429.2017.06.013.

摘要

针对某电厂一台350 MW亚临界汽轮发电机组高中压、低压以及发电机转子在过临界、3000r/min和带负荷等工况下多个轴承处轴振动偏大的问题

通过对机组不同工况下运行参数及振动测试

分析了振动大的主要原因是转子存在质量不平衡以及热不平衡所致。根据振动值、运行参数、轴系中心、转子结构及轴承支撑等情况

采取现场高速动平衡方法进行消振。在高中压、低压转子以及低发对轮6个位置同时进行加重

一次加重使轴系轴振动通频值在各工况下都在100 μm以内。

Abstract

For a 350 MW subcritical Turbo-generator Unit

the vibration of the HP-IP rotor

LP rotor and generator rotor at the critical

3000 r/min and load conditions is too large. By analyzing the vibration test of these conditions

the result that the vibration of the main reason is the existence of mass and thermal imbalance is proposed. According to the vibration value

operating parameters

shaft center

and rotor structure and bearing support

the method of high-speed dynamic balancing is used to decrease the vibration. The balancing masses at six locations in the HPIP rotor

LP rotor and the LP-generator coupling are added at same time

and the vibration frequency values are less than 100μm in all conditions one-time.

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