汽轮发电机组联轴器受力状态测试与分析  

Stress Testing and Analysis for the Coupling of a Turbo-Generator Unit

作　　者：黄淑营 刘亚琼 张景辉 刘正强 冯坤 陈长利 王配 杨建刚[4] HUANG Shuying;LIU Yaqiong;ZHANG Jinghui;LIU Zhengqiang;FENG Kun;CHEN Changli;WANG Pei;YANG Jian gang(Qinyang Power Generation Branch,SPIC Henan Electric Power Corporation,Qinyang 454500,Henan Province,China;Tech no logy and Information Center,SPIC Henan Electric Power Corporation,Zhengzhou 450000,China;CPI Power Engineering Co.,Ltd.,Shanghai 200233,China;National Engineering Research Center of Turbo-Generator Vibration,Southeast University,Nanjing 210096,China)

机构地区：[1]国家电力投资集团河南电力有限公司沁阳发电分公司,河南沁阳454500 [2]国家电投集团河南省电力有限公司技术信息中心,郑州450000 [3]中电投电力工程有限公司,上海200233 [4]东南大学火电机组振动国家工程研究中心,南京210096

出　　处：《动力工程学报》2019年第3期198-202,207,共6页Journal of Chinese Society of Power Engineering

摘　　要：为了测试联轴器受力状态(包括剪力和弯矩),提出基于应变的联轴器受力测试方法,即在联轴器两侧各布置1组应变片,采用全桥方式测试低速旋转状态下2个截面上的弯曲应变。建立联轴器受力分析模型,根据应变测量值求解联轴器剪力和弯矩。利用该方法对转子-轴承试验台、某300 MW汽轮发电机组和600 MW汽轮发电机组轴系连接状态下联轴器剪力和弯矩进行了测试,并据此分析了轴系对中情况。结果表明:该方法在现场是可行的,可以帮助分析机组振动故障原因。To test the force state of a coupling(including shearing force and bending moment),a strain-based method was proposed.The specific way is to arrange a group of strain gauges on both sides of the coupling to measure the bending strain on the two sections using full bridge mode under low rotating speeds.The measured strain values are then used to solve the shearing force and bending moment with the stress analysis model set up for the coupling.The technology was applied to measure the shearing force and bending moment of the coupling in a rotor-bearing test rig,a 300 MW steam turbine unit and a 600 MW steam turbine unit,based on which,an analysis was conducted on the shaft alignment status.Results show that the method is applicable on operating site,helping to find the vibration cause of the unit.

关 键 词：汽轮发电机组 联轴器 剪力 弯矩 应变 测试 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]