某350MW汽轮发电机组多平面一次加重振动测试分析
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.
标题：某350MW汽轮发电机组多平面一次加重振动测试分析
title:Vibration Test and Analysis of Dynamic Balancing without Test-mass on Multi-plane for a 350MW Turbo-generator Unit
作者：王羽, 徐伟轩, 郭宝仁
authors:WANG Yu, XU Weixuan, GUO Baoren
关键词：汽轮机,不平衡,多平面,一次加重,
keywords:steam turbine,imbalance,multi-planar,balancing once,
发表日期：2017-12-30
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