The Effect of the Operating Point on the Pressure Fluctuations at the Blade Passage Frequency in the Volute of a Centrifugal Pump
The Effect of the Operating Point on the Pressure Fluctuations at the Blade Passage Frequency in the Volute of a Centrifugal Pump
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DOI：
10.1115/1.1493814
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发表时间：
2002-09
影响因子：
2
通讯作者：
Jorge L. Parrondo-Gayo;José González-Pérez;J. Fernandez-Francos
中科院分区：
文献类型：
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作者：
Jorge L. Parrondo-Gayo;José González-Pérez;J. Fernandez-Francos
本文对无因次比转速为0.48的常规离心泵蜗壳内的非定常压力分布进行了实验研究，流量从最佳效率点的0%到160%。为此，通过快速响应压力传感器在沿蜗壳沿着的36个不同位置处获得压力信号。特别注意叶片通道频率下的压力波动，包括相对于叶片运动的振幅和相位延迟。此外，还利用所获得的实验数据来调整泵蜗壳的简单声学模型的参数
An experimental investigation is presented which analyzes the unsteady pressure distribution existing in the volute of a conventional centrifugal pump with a nondimensional specific speed of 0.48, for flow-rates from 0% to 160% of the best-efficiency point. For that purpose, pressure signals were obtained at 36 different locations along the volute casing by means of fast-response pressure transducers. Particular attention was paid to the pressure fluctuations at the blade passage frequency, regarding both amplitude and phase delay relative to the motion of the blades. Also, the experimental data obtained was used to adjust the parameters of a simple acoustic model for the volute of the pump