浮式平台压缩机振动传递特性研究

Research on Vibration Transfer Characteristics of Floating Platform Compressor

辨识浮式平台压缩机管路的模态可为管路减振、抑振提供理论依据,保障机组的安全运行。首先基于自主开发的振动耦合传递软件对机撬上的管路进行模态分析;然后基于有限元分析的结果和现场的实际情况选择管路的测点,在管路上安装加速度传感器,监测管路的振动;最后基于实测的振动数据,利用随机子空间法辨识管路的模态参数,获得了前6阶固有频率和阻尼。

Identifying pipeline modal of the floating platform compressor can provide theoretical basis for vibration reduction and vibration suppression of the pipeline and can ensure safe operation of the unit.Firstly,having self-developed vibration coupling transfer software based to analyze the modal of machine skid pipeline;secondly,having measurement points of the pipeline selected based on the results of finite element analysis and the actual situation of the site,and the acceleration sensors installed on the pipeline to monitor vibration of the pipeline;finally,having the measured vibration data based and the the stochastic subspace identification method adopted to identify modal parameters of the pipeline and obtain the first six natural frequencies and damping.