50MW背压机组汽轮机转子形变原因分析及探讨  

Cause and Countermeasure Analysis of Rotor Deformation of 50MW Back Pressure Unit

作　　者：吴春年 李丰均 孙海龙 居国腾 顾伟飞 石家魁 WU Chun-nian;LI Feng-jun;SUN Hai-long;JU Guo-teng;GU Wei-fei;SHI Jia-kui(Zhejiang Zheneng Shaoxing Binhai Thermal Power Co.,Ltd.,Shaoxing 312073,China;Zhejiang Zheneng Technology Institute Co.,Ltd.,Hangzhou 310052,China;Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]浙江浙能绍兴滨海热电有限责任公司,绍兴312073 [2]浙江浙能技术研究院有限公司,杭州310052 [3]哈尔滨工业大学,哈尔滨150001

出　　处：《汽轮机技术》2020年第1期61-63,共3页Turbine Technology

基　　金：浙江省能源集团有限公司科技项目(No.ZNKJ-2019-009)。

摘　　要：某电厂50MW背压式热电联产机组在启机阶段出现振动及胀差波动大的现象,并最终导致转子弯曲、轴封磨损的严重问题。通过对汽机本体运行状态监测数据进行综合分析,确认故障原因为暖机不够充分引起转子过量形变、轴振上升,并出现较为严重的碰摩,进一步加剧振动,最终导致停机、惰走时间大幅缩短。经缸体解体检查,验证了上述分析,并提出了相应的整改方案。Back pressure units are widely used in industrial production,and their safety and stability are important.The steam turbine back pressure cogeneration unit of a power plant has a large fluctuation of vibration and differential expansion during the start-up phase of the unit,and finally leads to the problem of severe bending and shaft seal wear.In response to the above problems,the actual operating data was used for analysis,and it was found that the insufficient warm-up caused the shaft vibration to rise and the wear occurred during the idle travel.On this basis,the corresponding rectification suggestions and solutions were put forward.This paper has great reference value for the safety of rotor deformation in the 50MW unit during the start-up process.

关 键 词：50MW背压机组 启机冲转 转子形变 振动 胀差 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]