1000 MW汽轮机轴承载荷分配测试方法和试验研究

详细信息    查看全文 | 推荐本文 |

英文篇名：Test Method and Experimental Study on Bearing Load Distribution of A 1 000 MW Turbine 作者：冯坤 ; 刘亚琼 ; 陈宝星 ; 朱溢铭 英文作者：FENG Kun;LIU Ya-qiong;CHEN Bao-xing;ZHU Yi-ming;SPIC Henan Electric Power Co. Led. Technology & Information Center;National Electric Investment Group,Henan Electric Power Co.,Ltd.,Qinyang Power Generation Branch;National Engineering Research Center of Turbo-generator Vibration,Southeast University; 关键词：汽轮机 ; 轴承 ; 载荷 ; 轴系对中 英文关键词：turbine;;bearing;;load;;shaft alignment 中文刊名：RNWS 英文刊名：Journal of Engineering for Thermal Energy and Power 机构：国家电投集团河南电力有限公司技术信息中心;国家电投集团河南电力有限公司沁阳发电分公司;东南大学火电机组振动国家工程研究中心; 出版日期：2019-04-15 14:21 出版单位：热能动力工程 年：2019 期：v.34;No.221 语种：中文; 页：RNWS201904014 页数：5 CN：04 ISSN：23-1176/TK 分类号：63-67

摘要

为测试轴承载荷分配,提出了基于转轴截面应变值的轴承载荷测试方法,建立了轴承载荷计算分析模型,研发了测试装置。以某台1 000 MW大型汽轮机为例,测试了轴系连接状态下汽轮机各轴承载荷分配,并据此分析了机组安装时轴系对中状态。试验所得各轴承总载荷与轴系总载荷之间的误差小于1%,单个轴承载荷测试值与设计值之间的误差小于1%,说明本测试方法准确度较高。该汽轮机安装状态下轴系载荷分配与设计值相近,轴系对中状态合理。
        Bearing load has great influence on the operation safety of rotating machinery as turbine generator unit.To test bearing load,a method using the measured shaft strain values at different sections is proposed.The bearing load calculation model is established and the testing instrument is developed.Bearing load distribution is tested with a 1 000 MW turbine as an example.The shaft alignment state of the unit in the installed state is analyzed.The error between the total load of each bearing and the shaft is less than 1%,and the error between the test and the design load of each bearing is less than 1%,indicating the bearing load identification method is accurate.Bearing load distribution is similar to the design value in the installation state of the turbine.The shaft alignment state is reasonable.

引文

[1] 杨建刚,周世新,黄葆华,等.多支撑汽轮发电机组轴承载荷灵敏度计算与分析[J].中国电机工程学报,2000,20(7):79-82.YANG Jian-gang,ZHOU Shi-xin,HUANG Bao-hua,et al.Calculation and analysis of bearing load sensitivity formulti -support turbo-generator units[J].Proceedings of the CSEE,2000,20(7):79-82.
    [2] 曹国华,杨建刚,张新.多转子系统轴承标高变化对振动的影响分析[J].汽轮机技术,2006,48(6):441-443.CAO Guo-hua,YANG Jian-gang,ZHANG Xin.Influence of bearing elevation on vibration of multi-support rotor bearing system[J].Turbine Technology,2006,48(6):441-443.
    [3] 孔源,田国成.超临界汽轮发电机组励磁转子的安装找正及对尾瓦轴振的影响[J].山东电力技术,2011,14(1):56-60.KONG Yuan,TIAN Guo-cheng.The installation and alignment method of supercritical generator collector ring rotor and its influence to the shaft vibration at No.9 tail[J].Shandong Electrical Technology,2011,14(1):56-60.
    [4] 何文强,杨建刚.标高变化对轴系振动影响试验研究[J].电站系统工程,2014,30(6):53-55.HE Wen-qiang,YANG Jian-gang.Experimental research on the influence of bearing elevation on shaft vibration[J].Power System Engineering,2014,30(6):53-55.
    [5] 王延博.大型汽轮发电机组轴系不对中振动的研究[J].动力工程,2004,24(6):768-775.WANG Yan-bo.Shaft misalignment induced vibration in high capacity steam turbine generator sets[J].Power Engineering,2004,24(6):768-775.
    [6] 宋光雄,宋君辉,梁会钊,等.大型旋转机械不对中故障研究及分析[J].汽轮机技术,2013,55(1):1-6.SONG Guang-xiong,SONG Jun-hui,LIANG Hui-zhao,et al.Studies and analysis of high capacity rotary machines with misalignments[J].Turbine Technology,2013,55(1):1-6.
    [7] 杨建刚,周世新,黄葆华,等.多支撑汽轮发电机组轴承载荷灵敏度计算与分析[J].中国电机工程学报,2000,20(7):79-82.YANG Jian-gang,ZHOU Shi-xin,HUANG Bao-hua,et al.Calculation and analysis of bearing load sensitivity for multi-support turbo-generator units[J].Proceedings of the CSEE,2000,20(7):79-82.
    [8] 田永伟,杨建刚.某1 000 MW 汽轮发电机组轴承载荷灵敏度计算分析[J].热能动力工程,2008,23(5):459-463.TIAN Yong-wei,YANG Jian-gang.Calculation and analysis of the bearing load sensitivity of a 1 000 MW turbo-generator unit [J].Journal of Engineering for Thermal Energy and Power,2008,23(5):459-463.
    [9] 田新启,高亹.600 MW汽轮发电机组轴系标高测试及振动故障治理[J],热能动力工程,2010,25(1):30-34.TIAN Xin-qi,GAO Wei.Shafting elevation measurement and vibration troubleshootingofa 600 MW turbo-generator unit[J].Journal of Engineering for Thermal Energy and Power,2010,25(1):30-34.
    [10] 姚德祥,孙敏.由测试油膜压力推算轴承负荷和标高调整的试验研究方法[J].江苏电机工程,1998,17(1):15-19.YAO De-xiang,SUN Min.Test method for bearing load estimation and elevation adjustment from the measured oil film pressure[J].Jiangsu Electrical Engineering,1998,17(1):15-19.
    [11] 黄润华,姜元峰,傅汝辑.滑动轴承载荷的现场监测和诊断[J],机械强度,1988,10(4):7-14.HUANG Run-hua,JIANG Yuan-feng,FU Ru-ji.Field monitoring and diagnosis of journal bearing load [J].Mechanical Strength,1988,10(4):7-14.
    [12] 梁群龙,杨兆建,孙虎儿,等.多支承转子系统轴承负荷直接识别技术研究[J].汽轮机技术,2009,51(3):184-186.LIANG Qun-long,YANG Zhao-jian,SUN Hu-er,et al.Bearing load direct identification for multi-support rotor system[J].Turbine Technology,2009,51(3):184-186.
    [13] 高庆水,张楚,邓小文,等.由轴颈扬度计算汽轮发电机组轴承载荷分布方法[J].机械工程学报,2013,49(11):84-88.GAO Qing-shui,ZHANG Chu,DENG Xiao-wen,et al.Method to calculate turbine generator unit bearing load distribution using journal raising rate[J].Journal of Mechanical Engineering,2013,49(11):84-88.
    [14] 李燕勇,杨建刚,董川,等.基于轴系对中数据的轴承载荷识别方法[J].动力工程学报,2013,33(12):932-935.LI Yan-yong,YANG Jian-gang,DONG Chuan,et al.Bearing load identification based on shaft alignment measurement[J].Journal of Chinese Society of Power Engineering,2013,33(12):932-935.
    [15] 李燕勇,杨建刚,董川,等.某台600 MW汽轮机组轴承载荷分配测试与分析[J].热能动力工程,2013,28(6):565-570.LI Yan-yong,YANG Jian-gang,DONG Chuan,et al.Testing and analysis of the load distribution among bearings in a 600 MW steam turbine Unit [J].Journal of Engineering for Thermal Energy and Power,2013,28(6):565-570.
    [16] ZHANG Shi-dong,YANG Jian-gang,LI Yan-yong,et al.Identification of bearing load by three section strain gauge method:theoretical and experimental research[J].Measurement,2013,46(10):3968-3975.
    [17] 张世东,杨建刚,朱先宝,等.应变-传递矩阵法计算轴系载荷分布及实验研究[J].动力工程学报,2012,32(7):513-516.ZHANG Shi-dong,YANG Jian-gang,ZHU Xian-bao,et al.Experimental study of shafting load distribution based on strain and transfer matrix method [J],Journal of Chinese Society of Power Engineering,2012,32(7):513-516.