基于导叶位置数据分析的某水电厂导叶立面间隙调整方法改进
|
摘要
在水电厂水轮机检修过程中,水轮机导叶立面间隙调整是一项重要而精细的工作,其主要目的是将水轮机24片矩形导叶两两相靠,调整为一个密不透水的圆筒状。传统导叶立面间隙调整方法虽然能满足调整完成后两两导叶立面间隙为零的技术要求,但因缺乏精确的反馈量和监视量,调整过程费时费力,同时可能造成导叶之间压紧程度不一的现象,对后续调整产生一定影响。通过采集机组检修前导水机构各项数据,导入三维建模软件进行精确建模,在模型中进行多项初始条件下进行水轮机导叶立面间隙模拟调整,并与检修前数据比较,得出该检修状态下导叶的标准位置。在现场实际调整过程中,根据不同水轮机导叶立面间隙分布情况、机组检修级别,结合导叶标准位置提出差异化水轮机导叶立面间隙调整策略,极大提高了水轮机导叶立面间隙调整效率和精度,保证了机组运行安全性。
In the process of repairing the hydraulic turbine in a hydropower plant,the adjustment of the clearance of the guide vane of the turbine is an important and fine work. The main purpose of this work is to adjust the 24 rectangular guide vane of the turbine to a cylinder with a dense and impermeable water. the traditional clearance adjustment method can meet the technical requirements of zero gap after the adjustment,the adjustment process is time-consuming and laborious because of the lack of accurate feedback and monitoring. It may also cause a different pressure between the guide vane,which has a certain influence on the subsequent adjustment. Through collecting the data of the leading water guiding mechanism of the unit,the three-dimensional modeling software is introduced to model accurately,and the clearance of the guide blade of the turbine is simulated under several initial conditions,and the standard position of the guide vane under the condition of the maintenance is compared with the data before the maintenance. In the actual field adjustment process,according to the clearance distribution of the guide vane of different hydraulic turbine and the level of unit maintenance,the adjustment strategy of differential hydraulic turbine guide blade clearance adjustment is put forward according to the standard position of guide vane,which improves the efficiency and precision of the clearance adjustment of the guide vane of the turbine,and ensures the safety of the unit operation.
In the process of repairing the hydraulic turbine in a hydropower plant,the adjustment of the clearance of the guide vane of the turbine is an important and fine work. The main purpose of this work is to adjust the 24 rectangular guide vane of the turbine to a cylinder with a dense and impermeable water. the traditional clearance adjustment method can meet the technical requirements of zero gap after the adjustment,the adjustment process is time-consuming and laborious because of the lack of accurate feedback and monitoring. It may also cause a different pressure between the guide vane,which has a certain influence on the subsequent adjustment. Through collecting the data of the leading water guiding mechanism of the unit,the three-dimensional modeling software is introduced to model accurately,and the clearance of the guide blade of the turbine is simulated under several initial conditions,and the standard position of the guide vane under the condition of the maintenance is compared with the data before the maintenance. In the actual field adjustment process,according to the clearance distribution of the guide vane of different hydraulic turbine and the level of unit maintenance,the adjustment strategy of differential hydraulic turbine guide blade clearance adjustment is put forward according to the standard position of guide vane,which improves the efficiency and precision of the clearance adjustment of the guide vane of the turbine,and ensures the safety of the unit operation.
引文
[1]李琪飞,李光贤,权辉,等.水泵水轮机在水轮机工况下导叶水力矩试验研究[J].水利学报,2018,49(03):362-368+378.LI Qifei,LI Guangxian,QUAN Hui,et al.Experimental research on guide hydro-dynamic torque of a pump turbine in turbine mode[J].Journal of Hydraulic Engineering,2018,49(03):362-368+378.
[2]王珣,王馨,赵盟,等.输变电设备状态大数据分析应用探讨[J].电力大数据,2018,21(01):1-5.WANG Wei,WANG Xin,ZHAO Meng,et al.Discussion on big data analysis and application of power transmission and transformation equipment[J].Guizhou Electric Power Technology,2018,21(01):1-5.
[3]占小涛,张晓宏,张俊发.水轮机导叶开启和关闭规律探讨[J].人民长江,2017,48(09):89-93.ZHAN Xiaotao,ZHANG Xiaohong,ZHANG Junfa.Study on opening and closing rule of turbine guide vanes[J].Yangtze River,2017,48(09):89-93.
[4]潘军伟,姜明忠,张占武.桃源水电站贯流式水轮机导水机构安装工艺[J].人民长江,2016,47(01):70-72+82.PAN Junwei,JIANG Mingzhong,ZHANG Zhanwu.Installation techniques of water guide structure of tubular turbine of Taoyuan Hydropower Station[J].Yangtze River,2016,47(01):70-72+82.
[5]郭涛,张立翔.混流式水轮机小开度下导水机构内湍流特性和叶道涡结构研究[J].工程力学,2015,32(06):222-230.GUO Tao,ZHANG Lixiang.Numerical study on turbulence characteristics in francis turbine under small opening condition[J].Engineering Mechanics,2015,32(06):222-230.
[6]曹艳,贺新桥,孙宁宁,等.基于Matlab的水电机组径向式导水机构仿真[J].水电能源科学,2015,33(02):176-178.CAO Yan,HE Xinqiao,SUN Ningning,et al.Simulation of radial guide vane apparatus for hydro-turbine based on Matlab[J].Hydropower Science,2015,33(02):176-178.
[7]王掩刚,魏崃,陈为雄.大弯角串列叶型优化设计与数值分析[J].推进技术,2014,35(11):1469-1474.WANG Bugang,WEI Wei,CHEN Weixiong.Optimization and numerical simulation of high-turning tandem cascade[J].Journal of Propulsion Technology,2014,35(11):1469-1474.
[8]李子凤.Thaukyegat(2)电站混流式水轮机运行稳定性方案的研究[J].机械工程师,2014,0(10):172-173.LI Zifeng.Stability research of francis turbine in Thaukyegat(2)power station[J].Mechanical Engineer,2014,0(10):172-173.
[9]王磊,娄瑜,王照福.混流式模型水轮机空化流动分析与试验研究[J].排灌机械工程学报,2014,32(09):771-775.WANG Lei,YAN Yu,WANG Zhaofu.Cavitating flow simulations and experiments on Francis turbine model[J].Journal of Drainage and Irrigation Machinery Engineering,2014,32(09):771-775.
[10]冯建军,武桦,吴广宽,等.偏工况下混流式水轮机压力脉动数值仿真及其改善措施研究[J].水利学报,2014,45(09):1099-1105.FENG Jianjun,WU Hua,WU Guangkuan,et al.Numerical simulation of pressure fluctuation in a Francis turbine at part load conditions with improved measures[J].Journal of Hydraulic Engineering,2014,45(09):1099-1105.
[11]李巍.中低水头水轮机导叶立面密封计算[J].大电机技术,2014(03):74-76.LI Wei.Discussion on the factors affecting the calculation of critical speed of hydraulic generator[J].Large Electric Machine and Hydraulic Turbine,2014(03):74-76.
[12]朱国俊,冯建军,郭鹏程,等.基于径向基神经网络-遗传算法的海流能水轮机叶片翼型优化[J].农业工程学报,2014,30(08):65-73.ZHU Guojun,FENG Jianjun,GUO Pengcheng,et al.Optimization of hydrofoil for marine current turbine based on radial basis function neural network and genetic algorithm[J].Transactions of the Chinese Society of Agricultural Engineering,2014,30(08):65-73.
[13]朱国俊,郭鹏程,等.贯流式水轮机转轮叶片的多学科优化设计[J].农业工程学报,2014,30(02):47-55.ZHU Guojun,GUO Pengcheng,LUO Xingzhen,et al.Optimal design of runner blade in bulb turbine base on multidisciplinary feasible method[J].Transactions of the Chinese Society of Agricultural Engineering,2014,30(02):47-55.
[14]刘万江,魏显著,韩秀丽,等.高水头混流式水轮机导叶位置关系对水力性能的影响[J].大电机技术,2013(06):46-48+51.LIU Wanjiang,WEI Xianzhe,HAN Xiuli,et al.Influence of the relational position of guide vanes on the hydraulic performance in high-head francis turbine[J].Large Electric Machine and Hydraulic Turbine,2013(06):46-48+51.
[15]陈帝伊,郑栋,马孝义,等.混流式水轮机调节系统建模与非线性动力学分析[J].中国电机工程学报,2012,32(32):116-123+19.CHEN Diyi,ZHENG Dong,MA Xiaoyi,et al.Nonlinear dynamical analysis and mathematical model of hydro-turbine governing systems[J].Proceedings of the CSEE,2012,32(32):116-123+19.
[16]吴国颖,沈萍菲,周大庆,等.基于响应面模型和NSGA-Ⅱ算法的微水头水泵水轮机叶片优化设计[J].广东电力,2017,30(09):15-21.WU Guoying,SHEN Pingfei,ZHOU Daqing,et al.Optimized design on blade of micro-head pump-turbine based on response surface method and NSGA-Ⅱalgorithm[J].Guangdong Electric Power,2017,30(09):15-21.
[17]吴博,赵远新,谢经鹏,等.水电机组调速器双机故障切换原因分析及处理[J].内蒙古电力技术,2016,34(03):92-96.WU Bo,ZHAO Yuanxin,XIE Jingpeng,et al.Analysis and treatment of dual system fault switch for governor of hydropower unit[J].Inner Mongolia Electric Power,2016,34(03):92-96.
[2]王珣,王馨,赵盟,等.输变电设备状态大数据分析应用探讨[J].电力大数据,2018,21(01):1-5.WANG Wei,WANG Xin,ZHAO Meng,et al.Discussion on big data analysis and application of power transmission and transformation equipment[J].Guizhou Electric Power Technology,2018,21(01):1-5.
[3]占小涛,张晓宏,张俊发.水轮机导叶开启和关闭规律探讨[J].人民长江,2017,48(09):89-93.ZHAN Xiaotao,ZHANG Xiaohong,ZHANG Junfa.Study on opening and closing rule of turbine guide vanes[J].Yangtze River,2017,48(09):89-93.
[4]潘军伟,姜明忠,张占武.桃源水电站贯流式水轮机导水机构安装工艺[J].人民长江,2016,47(01):70-72+82.PAN Junwei,JIANG Mingzhong,ZHANG Zhanwu.Installation techniques of water guide structure of tubular turbine of Taoyuan Hydropower Station[J].Yangtze River,2016,47(01):70-72+82.
[5]郭涛,张立翔.混流式水轮机小开度下导水机构内湍流特性和叶道涡结构研究[J].工程力学,2015,32(06):222-230.GUO Tao,ZHANG Lixiang.Numerical study on turbulence characteristics in francis turbine under small opening condition[J].Engineering Mechanics,2015,32(06):222-230.
[6]曹艳,贺新桥,孙宁宁,等.基于Matlab的水电机组径向式导水机构仿真[J].水电能源科学,2015,33(02):176-178.CAO Yan,HE Xinqiao,SUN Ningning,et al.Simulation of radial guide vane apparatus for hydro-turbine based on Matlab[J].Hydropower Science,2015,33(02):176-178.
[7]王掩刚,魏崃,陈为雄.大弯角串列叶型优化设计与数值分析[J].推进技术,2014,35(11):1469-1474.WANG Bugang,WEI Wei,CHEN Weixiong.Optimization and numerical simulation of high-turning tandem cascade[J].Journal of Propulsion Technology,2014,35(11):1469-1474.
[8]李子凤.Thaukyegat(2)电站混流式水轮机运行稳定性方案的研究[J].机械工程师,2014,0(10):172-173.LI Zifeng.Stability research of francis turbine in Thaukyegat(2)power station[J].Mechanical Engineer,2014,0(10):172-173.
[9]王磊,娄瑜,王照福.混流式模型水轮机空化流动分析与试验研究[J].排灌机械工程学报,2014,32(09):771-775.WANG Lei,YAN Yu,WANG Zhaofu.Cavitating flow simulations and experiments on Francis turbine model[J].Journal of Drainage and Irrigation Machinery Engineering,2014,32(09):771-775.
[10]冯建军,武桦,吴广宽,等.偏工况下混流式水轮机压力脉动数值仿真及其改善措施研究[J].水利学报,2014,45(09):1099-1105.FENG Jianjun,WU Hua,WU Guangkuan,et al.Numerical simulation of pressure fluctuation in a Francis turbine at part load conditions with improved measures[J].Journal of Hydraulic Engineering,2014,45(09):1099-1105.
[11]李巍.中低水头水轮机导叶立面密封计算[J].大电机技术,2014(03):74-76.LI Wei.Discussion on the factors affecting the calculation of critical speed of hydraulic generator[J].Large Electric Machine and Hydraulic Turbine,2014(03):74-76.
[12]朱国俊,冯建军,郭鹏程,等.基于径向基神经网络-遗传算法的海流能水轮机叶片翼型优化[J].农业工程学报,2014,30(08):65-73.ZHU Guojun,FENG Jianjun,GUO Pengcheng,et al.Optimization of hydrofoil for marine current turbine based on radial basis function neural network and genetic algorithm[J].Transactions of the Chinese Society of Agricultural Engineering,2014,30(08):65-73.
[13]朱国俊,郭鹏程,等.贯流式水轮机转轮叶片的多学科优化设计[J].农业工程学报,2014,30(02):47-55.ZHU Guojun,GUO Pengcheng,LUO Xingzhen,et al.Optimal design of runner blade in bulb turbine base on multidisciplinary feasible method[J].Transactions of the Chinese Society of Agricultural Engineering,2014,30(02):47-55.
[14]刘万江,魏显著,韩秀丽,等.高水头混流式水轮机导叶位置关系对水力性能的影响[J].大电机技术,2013(06):46-48+51.LIU Wanjiang,WEI Xianzhe,HAN Xiuli,et al.Influence of the relational position of guide vanes on the hydraulic performance in high-head francis turbine[J].Large Electric Machine and Hydraulic Turbine,2013(06):46-48+51.
[15]陈帝伊,郑栋,马孝义,等.混流式水轮机调节系统建模与非线性动力学分析[J].中国电机工程学报,2012,32(32):116-123+19.CHEN Diyi,ZHENG Dong,MA Xiaoyi,et al.Nonlinear dynamical analysis and mathematical model of hydro-turbine governing systems[J].Proceedings of the CSEE,2012,32(32):116-123+19.
[16]吴国颖,沈萍菲,周大庆,等.基于响应面模型和NSGA-Ⅱ算法的微水头水泵水轮机叶片优化设计[J].广东电力,2017,30(09):15-21.WU Guoying,SHEN Pingfei,ZHOU Daqing,et al.Optimized design on blade of micro-head pump-turbine based on response surface method and NSGA-Ⅱalgorithm[J].Guangdong Electric Power,2017,30(09):15-21.
[17]吴博,赵远新,谢经鹏,等.水电机组调速器双机故障切换原因分析及处理[J].内蒙古电力技术,2016,34(03):92-96.WU Bo,ZHAO Yuanxin,XIE Jingpeng,et al.Analysis and treatment of dual system fault switch for governor of hydropower unit[J].Inner Mongolia Electric Power,2016,34(03):92-96.