【摘要】 为研究某定频压缩机的轴系动态特性,首先对其工况稳定后的轴系挠度进行仿真计算,同时利用电涡流位移传感器监测其在各阶段的轴心轨迹和实际挠度值。工况稳定后的挠度实测值与仿真结果相比,误差为2.3%,基本一致。此外,通过测试还可获得此机型在整个运行过程中各阶段的轴心轨迹和挠度波动,各阶段之间轴心轨迹和挠度值均不同。其中开机瞬间挠度最大,约为工况稳定后的2.0416倍。对获知轴系动态性质、提高产品品质具有重要意义。更多还原

【Abstract】 To study the shaft system dynamic characteristics of a fixed-speed compressor, the simulation calculation of the shaft deflection when the work condition is stabilized is carried out, and two eddy current displacement sensors are used to monitor the shaft system axis locus and actual deflection at various operation stages. The error between the measured average deflection value and the simulation result is 2.3%. The results of the two methods agree well with each other. The shaft system axis locus and deflection fluctuation of this compressor during the entire operation cycle can be obtained with tests, too. The shaft system axis locus and deflection values at various stages are different from each other. At the moment of the compressor starting,the max deflection occurs which is about 2.0416 times of the value under stable work condition. The dynamic characteristic of the shaft system obtained via the research presented in this paper is important to the improvement of the product quality.更多还原