涡旋压缩机转子动力特性测试装置
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摘要
为研究涡旋压缩机转子的动力特性,以曲轴为研究对象,分别建立了涡旋压缩机曲轴力学模型和试验装置,并运用ANSYS软件得出样机和试验装置转子受力和位移变化量;再根据涡旋压缩机的工作原理,搭建基于电涡流传感器的试验、测试平台,并应用LabVIEW分别对试验装置转子振动位移信号进行采集、分析和存储。该试验装置能及时反馈涡旋压缩机转子的运动特性,实时显示转子的轴心轨迹、相互垂直位移信号的波形及功率谱等;并通过轴心轨迹形状来判别转子的故障类型,对预防机器故障和故障诊断有着重要的理论意义和实际意义。
For purpose of investigating rotor 's dynamic property of scroll compressors,the crankshaft was taken as the object of study and the crankshaft's mechanical model and the test device were established for scroll compressors; and ANSYS software was adopted to have force and displacement variation of the prototype and the test device's rotor obtained; and according to scroll compressor's working principle and based on the eddy current sensor,the test platform was built and LabVIEW programming was applied to collect,analyze and store the test device rotor's vibration displacement signals. The test device can timely reflect rotor's motion characteristics of the scroll compressor and display rotor's locus and waveforms and power spectrum of the vertical displacement signals as well as determine rotor's fault type upon the orbit of shaft center. This has theoretical and practical significance to the prevention of machine fault and fault diagnosis.
For purpose of investigating rotor 's dynamic property of scroll compressors,the crankshaft was taken as the object of study and the crankshaft's mechanical model and the test device were established for scroll compressors; and ANSYS software was adopted to have force and displacement variation of the prototype and the test device's rotor obtained; and according to scroll compressor's working principle and based on the eddy current sensor,the test platform was built and LabVIEW programming was applied to collect,analyze and store the test device rotor's vibration displacement signals. The test device can timely reflect rotor's motion characteristics of the scroll compressor and display rotor's locus and waveforms and power spectrum of the vertical displacement signals as well as determine rotor's fault type upon the orbit of shaft center. This has theoretical and practical significance to the prevention of machine fault and fault diagnosis.
引文
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[2]李超,郑尚书,赵嫚,等.涡旋压缩机小曲拐防自转机构动力特性分析[J].中国机械工程,2014,25(2):236~241.
[3]宋天虹,郑尚书.涡旋压缩机曲轴动力特性研究[J].石油化工设备,2013,42(1):18~21.
[4]胡萍,王珍,赵之海,等.基于模态分析的涡旋压缩机曲轴固有特性研究[J].压缩机技术,2007,(6):5~7.
[5]余洋,李超,赵嫚.涡旋压缩机曲轴转子壳体耦合动力学研究[J].振动、测试与诊断,2013,33(z1):23~27,216.
[6]严黎坚,黄志刚,张京.涡旋压缩机曲轴有限元分析[J].电器,2011,(z1):342~348.
[7]李超,孙照岚,赵嫚.无油润滑涡旋压缩机动静涡旋端面摩擦测试装置[J].化工机械,2014,41(2):180~183.
[8]程珩,杜岚松.旋转机械轴心轨迹故障诊断[J].太原理工大学学报,2003,34(5):552~554.
[9]杨启超,李连生,赵远扬,等.电涡流法测量涡旋压缩机轴向间隙的可行性试验研究[J].中国机械工程,2007,18(17):2017~2020.
[10]方琪.基于Lab VIEW的无油润滑涡旋压缩机动力特性参数测试系统的研究[D].兰州:兰州理工大学,2012.
[11]陈锡辉,张银鸿.Lab VIEW 8.20程序设计从入门到精通[M].北京:清华大学出版社,2007.