直接空冷系统风机运行扰力试验研究
|
摘要
采用1∶1试验模型,运用应变片组合的方法对风机运行对支撑结构产生的扰力进行测试。测试结果表明,风机运行时不仅因转子的偏心产生径向离心力,还因叶片竖向振动产生弯矩和因驱动叶片转动产生扭矩,依据现有的设计标准求得的扰力类型和取值与试验结果相差都较大,现有的标准不适用于这种大直径的风机设备。建议对于大直径空冷风机设备,其扰力的取值应单独制定扰力取值标准。试验结果有助于推进直接空冷系统的结构设计自主化进程。
This paper introduced the research of using 1∶1 test model and combined strain gages to test the fans in terms of their oscillation forces on supporting structure when they are in operation.The results show that the fans in operation produced not only radial centrifugal force because of the eccentric rotor,but also bending moment and torque due to vertical vibration and rotation of the blades respectively.As the experimental results are different from the estimated values and types of oscillation forces based on current design standards,it shows that the current standards are not applicable to the large-diameter fans.Therefore,independent standard of oscillation force values should be established for such large-diameter air cooling fans.The results from this study also help promote the independent structural design of direct air cooling system.
This paper introduced the research of using 1∶1 test model and combined strain gages to test the fans in terms of their oscillation forces on supporting structure when they are in operation.The results show that the fans in operation produced not only radial centrifugal force because of the eccentric rotor,but also bending moment and torque due to vertical vibration and rotation of the blades respectively.As the experimental results are different from the estimated values and types of oscillation forces based on current design standards,it shows that the current standards are not applicable to the large-diameter fans.Therefore,independent standard of oscillation force values should be established for such large-diameter air cooling fans.The results from this study also help promote the independent structural design of direct air cooling system.
引文
[1]董韶峰,闫金霞,任浩.发电厂直接空冷系统设计[J].能源与环境,2006,(5):117-120
[2]杨立军,杜小泽,杨勇平,等.直接空冷机组空冷系统运行问题分析及对策[J].现代电力,2006,23(2):52-55(Yang Lijun,Du Xiaoze,Yang Yongping,et al.Operation problems and solutions for direct air-cooledcondenser system[J].Modern Electric Power,2006,23(2):52-55(in Chinese))
[3]中国工程建设标准化协会建筑振动专业委员会.建筑振动工程手册[M].北京:中国建筑工业出版社,2002
[4]JB/T9101—1999通风机转子平衡[S].北京:机械科学研究院,1999(JB/T 9101—1999 Fan rotor balance[S].Beijing:China Academy of Machinery Science&Technology,1999(in Chinese))
[5]GB 50040—96动力机器基础设计规范[S].北京:中国计划出版社,1996(GB 50040—96 Code for design ofdynamic machine foundation[S].Beijing:China PlanningPress,1996(in Chinese))
[6]王忠友,杨志刚.电站直接空冷系统大直径风机振动分析[J].应用能源技术,2007(1):31-33(WangZhongyou,Yang Zhigang.Vibration analysis of the fulldiameter fan for the direct air cooling system of powerstation[J].Applied Energy Technology,2007(1):31-33(in Chinese))
[7]赵春莲,李红星,冉颢,等.1000MW直接空冷机组支架结构体系研究[J].武汉大学学报(工学版),2007,40(增刊):180-184(Zhao Chunlian,Li Hongxing,Ran Hao,et al.Study on support structure system for direct air-cooling 1000MW unit[J].Engineering Journal of WuhanUniversity,2007,40(S1):180-184(in Chinese))
[8]彭刚.直接空冷系统风机的振动分析研究[J].应用能源技术,2009,(1):31-32(Peng Gang.Structure vibrationanalysis of acc system fan[J].Applied EnergyTechnology,2009,(1):31-32(in Chinese))
[9]赵更歧,白国良,赵春莲,等.三跨空冷支架结构体系动力特性测试研究[J].世界地震工程,2009,25(1):88-91(Zhao Gengqi,Bai Guoliang,Zhao Chunlian,et al.Testing study on the dynamic characteristics of a three spandirect dry-cooled condenser structure[J].WorldEarthquake Engineering,2009,25(1):88-91(inChinese))
[10]刘林.空冷凝汽器支架结构性能与地震反应分析[D].西安:西安建筑科技大学,2007(Liu Lin.Study on theperformance and earthquake response of the supportstructure system for air cooled condenser[D].Xi′an:Xi′an University of Architecture and Technology,2007(inChinese))
[11]屈铁军,窦瑞杰,安栋.电厂直接空冷风机系统扰力测试研究[J].地震工程与工程振动,2010,30(4):80-83(Qu Tiejun,Dou Ruijie,An Dong.Measurement ofdisturbing force caused by direct air-cooling fans of powerstation[J].Journal of Earthquake Engineering andEngineering Vibration,2010,30(4):80-83(in Chinese))
[12]吉林工业大学农机系,第一机械工业部农业机械科学研究院编.应变片电测技术[M].北京:机械工业出版社,1978
[2]杨立军,杜小泽,杨勇平,等.直接空冷机组空冷系统运行问题分析及对策[J].现代电力,2006,23(2):52-55(Yang Lijun,Du Xiaoze,Yang Yongping,et al.Operation problems and solutions for direct air-cooledcondenser system[J].Modern Electric Power,2006,23(2):52-55(in Chinese))
[3]中国工程建设标准化协会建筑振动专业委员会.建筑振动工程手册[M].北京:中国建筑工业出版社,2002
[4]JB/T9101—1999通风机转子平衡[S].北京:机械科学研究院,1999(JB/T 9101—1999 Fan rotor balance[S].Beijing:China Academy of Machinery Science&Technology,1999(in Chinese))
[5]GB 50040—96动力机器基础设计规范[S].北京:中国计划出版社,1996(GB 50040—96 Code for design ofdynamic machine foundation[S].Beijing:China PlanningPress,1996(in Chinese))
[6]王忠友,杨志刚.电站直接空冷系统大直径风机振动分析[J].应用能源技术,2007(1):31-33(WangZhongyou,Yang Zhigang.Vibration analysis of the fulldiameter fan for the direct air cooling system of powerstation[J].Applied Energy Technology,2007(1):31-33(in Chinese))
[7]赵春莲,李红星,冉颢,等.1000MW直接空冷机组支架结构体系研究[J].武汉大学学报(工学版),2007,40(增刊):180-184(Zhao Chunlian,Li Hongxing,Ran Hao,et al.Study on support structure system for direct air-cooling 1000MW unit[J].Engineering Journal of WuhanUniversity,2007,40(S1):180-184(in Chinese))
[8]彭刚.直接空冷系统风机的振动分析研究[J].应用能源技术,2009,(1):31-32(Peng Gang.Structure vibrationanalysis of acc system fan[J].Applied EnergyTechnology,2009,(1):31-32(in Chinese))
[9]赵更歧,白国良,赵春莲,等.三跨空冷支架结构体系动力特性测试研究[J].世界地震工程,2009,25(1):88-91(Zhao Gengqi,Bai Guoliang,Zhao Chunlian,et al.Testing study on the dynamic characteristics of a three spandirect dry-cooled condenser structure[J].WorldEarthquake Engineering,2009,25(1):88-91(inChinese))
[10]刘林.空冷凝汽器支架结构性能与地震反应分析[D].西安:西安建筑科技大学,2007(Liu Lin.Study on theperformance and earthquake response of the supportstructure system for air cooled condenser[D].Xi′an:Xi′an University of Architecture and Technology,2007(inChinese))
[11]屈铁军,窦瑞杰,安栋.电厂直接空冷风机系统扰力测试研究[J].地震工程与工程振动,2010,30(4):80-83(Qu Tiejun,Dou Ruijie,An Dong.Measurement ofdisturbing force caused by direct air-cooling fans of powerstation[J].Journal of Earthquake Engineering andEngineering Vibration,2010,30(4):80-83(in Chinese))
[12]吉林工业大学农机系,第一机械工业部农业机械科学研究院编.应变片电测技术[M].北京:机械工业出版社,1978
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心