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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.3: Design Engineering; Maintenance Engineering; Manufacturing Engineering; ... >Cavitation Detection of a Centrifugal Pump Using Instantaneous Angular Speed
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Cavitation Detection of a Centrifugal Pump Using Instantaneous Angular Speed

机译：使用瞬时角速度的离心泵空化检测

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摘要

Cavitation is a common fault in centrifugal pumps. The detection and diagnosis of the onset and severity of the cavitation provide the means of preventing the cavitation from causing harmful effects such as deterioration of the hydraulic performance, damage to pump components and the pollution by vibration and noise. This paper presents a new approach to monitoring cavitaion based on the measurement of instantaneous angular speed (IAS) of the pump. IAS is measured using a cheap shaft encoder and processed using order spectrum analysis. It has been found that the normalised amplitude at the third order of the rotational speed can be used as a primary monitoring feature to detect the onset of the cavitation and to quantify the severity of the cavitaion. A secondary detection feature is also defined in the high frequency range. This makes the detection results more reliable.
机译：空化是离心泵的常见故障。空化的开始和严重程度的检测和诊断提供了一种防止空化引起有害影响的手段，例如液压性能下降，泵组件损坏以及振动和噪声污染。本文提出了一种基于泵瞬时角速度（IAS）的测量空​​化率的新方法。 IAS使用廉价的轴编码器进行测量，并使用阶次频谱分析进行处理。已经发现，在旋转速度的三阶处的归一化幅度可以用作主要监测特征，以检测空化的开始并量化空化的严重性。在高频范围内还定义了辅助检测功能。这使得检测结果更加可靠。

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