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Wear fault diagnosis of an emulsion pump crank bearing

Journal of China University of Mining and Technology 2008年第3期18卷 470-474页

作者： HAN Xiao-ming DU Chang-long ZHANG Yong-zhong TIE Zhan-xu School of Mechanical and Power Engineering Henan Polytechnic University Jiaozuo Henan 454003 China School of Mechanical and Electronic Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

The total load on a crank bearing was calculated by performing a load analysis of the crank connecting rod mechanism. The Reynolds equation for hydrodynamic lubrication of the crank bearing was established at the Reynolds boundary condition and was then solved using the Holland method. From this the regular track of the beating axis was obtained. As the crank beating gradually wears the eccentricity ratio corresponding to the minimum oil film thickness increases gradually. The oil-bound film eventually breaks down, which allows friction and collision between the metal surfaces of the crank pin and the bearing. The rigid impact leads to excitation of high frequency vibrations at the natural frequencies of the connecting rod. The experiments show that the wear condition of the crank beating can be identified correctly through the vibration signature at the natural frequencies of the connecting rod. The degree of wear can be predicted accurately through the energy content of the high frequency bands.

关键词： emulsion pump crank beating wear diagnosis

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Study and Simulation of emulsion pump Pressure Controller Based on Fuzzy-immune PID Algorithm

Study and Simulation of Emulsion Pump Pressure Controller Ba...

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2011 International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： LIU Chang LIAN Zi-sheng College of mechanical engineering Taiyuan University of Technology School of machinery and electrical engineering Taiyuan University of Science and Technology

ISBN: (纸本)9781612848334

Combining the principle of immune feedback system and the theory of fuzzy control, the fuzzy-immune PID controller is proposed to adapt the characteristic of emulsion pump feeding liquid loop, such as large inertia , nonlinearity and pure time-delay .The system has the advantage of higher self-adaptive ability through real time modifying PID parameter under fuzzy control rulers. The simulation result shows that the controller has effective response and robust feature.

关键词： immune feed fuzzy PID control emulsion pump self-adaptive ability

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Control strategy for multi-pump emulsion power station in coal mine face

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Journal of Coal Science & Engineering(China) 2011年第4期17卷 443-446页

作者： LI Wen-ying WEI Jin-hong Research Institute of Mechano-electronic Engineering Taiyuan University of Technology Taiyuan 030024 China

Shearer and hydraulic support are matching equipments. To increase the operating speed of the shearer, the following speed of hydraulic support must be increased. This means increasing the volume of flow from emulsion power station. Analyzing the operating characteristics of hydraulic supports, the number of simultaneously operating supports is obtained by means of pressure parameter and time history at a certain time, which is a theory base for development of control system to multi-pump emulsion power station.

关键词： emulsion pump mining face hydraulic support control algorithm

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