Vibration of compressor shafting system can cause the uneven air gap between the stator and the rotor, which will intensify the electromagnetic vibration of the motor. Traditional damping technique is not available for vibration and noise control due to the high temperature and high pressure conditions inside the compressors. In order to reduce the vibration of the compressor's shafting, a technique named Non-obstacle Particle Damping (NOPD) is used and some special NOPD shock absorbers are designed for shafting vibration reduction. According to the structure of an inverter compressor, 4 NOPD shock absorbers with different numbers of filled-in particles and cavity materials are made and installed to the rotors. Results of compressor vibration test show that the vibration of the compressor with NOPD shock absorbers installed is reduced apparently in contrast with the compressor without NOPD shock absorber. And the more particles are filled in, the better effect of vibration reduction is achieved.%压缩机泵体轴系振动会导致电机气隙不均,从而引起电机电磁振动加剧.传统阻尼技术无法应用于压缩机内部的高温、高压环境.为了降低泵体轴系振动,采用非阻塞性颗粒阻尼减振技术(NOPD技术)设计专门用于泵体减振的NOPD减振器.为得到效果较优的NOPD减振器设计参数,针对某款变频压缩机设计4种不同颗粒填充数、腔体材质的NOPD减振器,安装在电机转子的平衡块位置处.整机振动实验结果表明:与未安装NOPD减振器的批量机相比,安装NOPD减振器的试制机壳体振动均明显下降.颗粒填充数量越多,减振器减振效果越好.
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