活塞压缩机整机振动分析与试验研究

Analysis and Experimental Study of the Piston Compressor Vibration

为验证新设计的活塞压缩机整机运转的可靠性,对压缩机进行有限元模态仿真分析和临界振动响应测试。首先建立活塞压缩机的三维模型,并对其进行合理优化,设置工作边界条件后,完成有限元模态仿真分析,获得压缩机在此条件下的整机临界振动响应频率理论分析结果。然后对压缩机整机进行临界振动响应测试,获得压缩机前六阶的实时工作模态。试验结果与有限元模态分析结果对比分析表明,二者存在一些误差,但规律一致,整机不会发生破坏性临界共振现象。

To verify the overall operation reliability of the new designed piston compressor,finite element modal simulation and vibration response test were carried out on the compressor.First,a three-dimensional model of piston compressor was established,and then optimized.After the boundary conditions were set,a finite element modal simulation was conducted on the compressor,and the theoretical results of vibration response frequency on the compressor under this boundary condition were obtained.Afterwards,the compressor was tested for the vibration response at the critical speed,the real-time working modes of the first six steps of the compressor were obtained.The comparison between the finite element modal analysis and the empirical results demonstrats that there are some errors between them,but the results are consistent,and the destructive resonance would not occur in the new designed compressor.