| 小波消噪用于钻井泵阀泄露故障诊断 |
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| 引用本文： | 杨国安,许飞云,贾民平,钟秉林,周世刚.小波消噪用于钻井泵阀泄露故障诊断[J].东南大学学报(自然科学版),2001,31(2):50-53. |
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| 作者姓名： | 杨国安 许飞云 贾民平 钟秉林 周世刚 |
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| 作者单位： | 1. 东南大学机械工程系,南京210096
2. 大港石油管理局采油三厂,沧县 061023 |
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| 基金项目： | 国家自然科学基金资助项目!( 5 9675 0 2 1，5 9875 0 13 ) |
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| 摘 要： | 讨论了钻井泥浆泵阀的失效机理，提出影响泵阀寿命的2个主要因素是阀的冲击造成的阀的疲劳点蚀和由泥浆液的刺蚀、犁沟造成的冲蚀磨损。针对钻井泵现场工况，采用声信号进行诊断，泵阀声信号的特征是信噪比低、冲击信号丰富、故障信息的时域特征明显和非平稳性。因此通过对声信号的小波降噪处理，突出了泵阀失效的故障特征，Fourier分析很难达到这样的效果，说明小波分析对这类信号的消噪有着Fourier分析不可比拟的优点，同时通过消噪也为进一步诊断中特征量的提取奠定了基础。
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| 关 键 词： | 石油钻井泵 泵阀 小波分析 降噪 故障诊断 泄漏 |
| 文章编号： | 1001-0505(2001)02-0050-04 |
Application of Wavelet De-Noise to Leaking Fault Diagnosis for Drilling Pump Valve |
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| Yang Guoan,Xu Feiyun,Jia Minping,Zhong Binglin,Zhou Shigang.Application of Wavelet De-Noise to Leaking Fault Diagnosis for Drilling Pump Valve[J].Journal of Southeast University(Natural Science Edition),2001,31(2):50-53. |
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| Authors: | Yang Guoan Xu Feiyun Jia Minping Zhong Binglin Zhou Shigang |
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| Institution: | Yang Guoan 1 Xu Feiyun 1 Jia Minping 1 Zhong Binglin 1 Zhou Shigang 2 |
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| Abstract: | The failure mechanism of the valve of drilling pump is described in this paper. Two main factors which affect the lifetime including fatigue pitting and erosive wear of the surface layers of the pump valve. The sound signal is employed to diagnose the fault of the pump valve to be suitable for the real working environment. The signal of the pump valve has the characteristics of low signal noise ratio, large number of impulse components, and distinct feature in time domain and non stationary property. Hence after this signal is de noised by the wavelet, the fault feature of the pump valve becomes visible and easy to be extracted. This method demonstrates that wavelet analysis is more suitable than Fourier transform for tackling the fault signal of the pump valve. |
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| Keywords: | drilling pump pump valve wavelet analysis de noise fault diagnosis |
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