Vibration analysis of compressor piping system with fluid pulsation
Vibration analysis of compressor piping system with fluid pulsation
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DOI：
10.1007/s12206-012-0891-8
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发表时间：
2012-12
影响因子：
1.6
通讯作者：
Seong-Hyeon Lee;Sang-Mo Ryu;W. Jeong
中科院分区：
文献类型：
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作者：
Seong-Hyeon Lee;Sang-Mo Ryu;W. Jeong
连接到旋转式压缩机的管道系统是空调系统中制冷剂输送的重要组成部分。管道的振动被认为仅仅是由压缩机运行产生的机械力产生的。在这项研究中，管道中的流体脉动被认为是振动的来源，以及压缩机运行的机械力。机械力首先通过实验使用测量的外壳上的加速度信号来确定。然后从理论上推导了管内脉动流体所产生的流体力的计算公式。该估计使用由压力传感器测量的管道中的压力脉动信号。最后将两种振动源应用于管道系统的有限元模型。最后，预测的振动响应的两个来源表现出更好的协议与实验结果比预测只考虑机械力。因此，推导流体力的理论过程是有效的。
A piping system connected to a rotary compressor is an essential component for refrigerant transport in air-conditioning systems. The vibration of the pipes has been thought to be generated only by the mechanical forces due to the compressor operation. In this study, the fluid pulsation in the pipe is considered to be a source of the vibration, as well as the mechanical forces by the compressor operation. The mechanical force was first identified experimentally using measured acceleration signals over the shell. The calculation of the fluid force resulting from the pulsating fluid in the pipe was then derived theoretically. The estimation used the pressure pulsation signal in the pipe measured by a pressure transducer. Both sources of the vibration were finally applied to the finite element model of the piping system. Conclusively, the prediction of the vibration response to both sources showed better agreement with the experimental results than prediction considering only the mechanical force. Therefore the theoretical process deriving the fluid force was valid.