汽轮机转子惰走时间异常原因分析.PDF

内蒙古电力技术 26 INNER MONGOLIA ELECTRIC POWER 2017 年第35 卷第1期 doi:10.3969/j.issn. 1008-6218.2017.01.007 汽轮机转子惰走时间异常原因分析 1 1 1 2 江建勋 ，史 伟 ，乔胜楠 ，韩庆祝 （1. 内蒙古电力科学研究院，呼和浩特 010020 ；2.北方联合电力有限责任公司包头第三热电厂，内蒙古 包头 014060 ） 摘要：某电厂2 号机组在首次启动打闸停机后转子惰走时间仅为21 min26 s。通过分析 真空、蒸汽温度、轴封温度、轴承温度、润滑油压力、顶轴油压力、振动等参数的变化情况，结合 转子惰走曲线，确定转子惰走时间异常的原因为顶轴油泵出力异常。本次针对机组转子惰走 时间异常情况的原因分析，可为解决类似问题提供参考。 关键词：汽轮机；转子惰走时间；顶轴油泵；轴振；机械阻力 文献标志码：B 中图分类号：TM311 文章编号：1008-6218（2017 ）01-0026-04 Cause Analysis of Abnormal Steam Turbine Rotor Idle Away Time 1 1 1 2 JIANG Jianxun , SHI Wei , QIAO Shengnan , HAN Qingzhu （1.Inner Mongolia Electric Power Research Institute, Hohhot 010020, China; 2.No.3 Baotou Thermal Power Plant, Baotou 014060, China） Abstract ：The steam turbine rotor idle away time in a power plant is only 21 minutes and 26 seconds after hiting the brake. Through the analysis of the vacuum, the steam temperature, the shaft seal temperature, the bearing temperature, lubricating oil pressure, the jacking oil pressure, the vibration and other parameters, and combining with the rotor inertia curve, the author confirms the reason of the abnormal rotor idle away time is jacking oil pump working abnormally. The processing of abnormal rotor idle away time can provide reference for solving similar problems. Key words ：turbine; rotor idle away time; jacking oil pump; vibration; mechanical resistan