| 摘要: |
| 为改善运行环境并提高运行性能，对一台双螺杆制冷压缩机组进行了噪声和振动实验测试。通过频谱分析发现，机组在压缩机基频整数倍的频率处出现较高的噪音和较大的振动，说明压缩机是机组主要的振动源和噪声源。通过对改进前后的压缩机组进行实验对比，分析了实验数据，提出了相应的降噪减振措施。结果表明：改进转子型线设计，调整阴、阳转子啮合间隙分布，提高阴、阳转子的加工精度等措施是机组降噪减振的有效方法。 |
| 关键词: 热工学 机械动力学与振动 双螺杆制冷压缩机 噪声 振动 谱分析 |
| DOI： |
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| 基金项目: |
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| Experimental Investigation on Noise and Vibration Reduction in Twin-screw Refrigeration Compressor Unit |
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Zhang Weimin, Lu Yunzhuang
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| (Dalian Refrigeration Co., Ltd.) |
| Abstract: |
| The noise and the vibration in a twin-screw refrigeration compressor unit are tested experimentally in order to improve the operation environment and the performance. By spectrum analysis, it was found that the higher noise and the larger vibration occurred when the unit was running at integer multiple of compressor baseband frequency, which indicated that the compressor was the main source of vibration and noise of the unit. Some noise and vibration reduction methods were also presented. The results of experimental comparison of the screw compressor unit before and after improvement indicate that improving the rotor profile design, adjusting the meshing clearance of female rotor and male rotor, and enhancing the rotor machining precision are significantly effective for noise and vibration reduction. |
| Key words: Pyrology Mechanical dynamics and vibration Twin-screw refrigeration compressor Noise Vibration Spectral analysis |
