EVA装置超高压压缩机出口管道振动分析及阻尼减振研究

Vibration analysis and damping vibration reduction of outlet pipeline of EVA device super high pressure compressor

针对超高压压缩机出口管道的振动问题,对阻尼减振技术在管道减振中的应用进行了研究。结合某化工厂超高压压缩机一级出口管道振动情况,利用ANSYS有限元软件进行了模态分析,并结合现场管道振动情况确定了管线振动的主要原因;运用SAP2000软件进行了阻尼减振模拟,探讨了阻尼器安装数量和位置对管道的减振效果,制定了切实可行的安装方案。研究结果表明:在压缩机不停机、不改变管道原有结构的情况下,在管道振动最大位置处安装两个粘滞型阻尼器后,可以将超高压压缩机出口管道的振动能量大部分吸收,同时将管线的振动速度和幅值都降低70%以上,且不会引起临近管道的振动。

Aiming at the vibration problem of the outlet pipeline of super high pressure compressor,the application of damping technology in pipeline vibration reduction was studied.Combined with the vibration of the first-grade outlet pipe of a super high pressure compressor in a chemical plant,the modal analysis was carried out by using ANSYS finite element software,and the main reason of pipeline vibration was determined by combining the vibration of the site pipeline.SAP2000 software was used to simulate the vibration reduction of the damping.The effect of the number and location of dampers on the vibration reduction of pipelines was discussed,and a feasible installation scheme was formulated.The results indicate that the vibration energy of the outlet pipeline of the super high pressure compressor can be absorbed mostly by installing two viscous dampers at the maximum vibration position of the pipeline without changing the original structure of the pipeline and shutting down the compressor.At the same time,the vibration speed and amplitude of pipelines are reduced by more than 70%,and the vibration of adjacent pipelines will not be caused.