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Fault Diagnosis & Analysis of Hydraulic Suppott’s Hydraulic System in Fully Mechanized Coalface

Author: LiWeiXing
Tutor: ZhangJianZhong；SongRuoFeng
School: Shandong University of Science and Technology
Course: Mining Equipment and Control Engineering
Keywords: Hydraulic system Emulsion pump Fault Tree Diagnosis Analysis
CLC: TD355.4
Type: Master's thesis
Year: 2009
Downloads: 167
Quote: 1
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Abstract


In this paper, Longwall Face hydraulic system failure frequency high status , a comprehensive analysis of failure data, the paper proposes a hydraulic system diagnosis and fault tree analysis method to improve the reliability of the hydraulic system . The first paper provides an overview of the basic operating principle of hydraulic support , classification and apply seam ; hydraulic support system failure definitions , characteristics, determine the basis for their classification , citing three categories common hydraulic system failure . Fault tree analysis introduced the basic concepts and symbols related to representation ; describes the general fault tree analysis methods were discussed in the fault tree analysis method of quantitative and qualitative analysis of the basic concepts and principles , gives the corresponding simulation program diagram. According to x ~ 2 test method principle test fault samples distribution types , the estimated distribution parameters for the digital simulation of failure to provide the required data. In ZZ4000/17/35 shield -shaped support bracket hydraulic system, for example , were established its hydraulic system fault tree and pumping hydraulic system fault tree and its analysis, the hydraulic system comes mainly from the emulsion pump failure faults. Then create emulsion pump fault tree , the use of fault tree analysis system software CAFTA its simulation analysis, the emulsion pump fault tree top event probability , the probability of each basic event importance , the degree of importance of each basic event model and other data . After analysis of these data determine the cause of emulsion pump failure is mainly due emulsion pollution, to solve the pollution problems of emulsion hydraulic support system made ??pollution control dynamic analysis . Finally, in the maintenance of a comprehensive initiative for emulsions made ??on the basis of a simple hydraulic system fault diagnosis.

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Mine support equipment > Mining face support > Hydraulic support and its control
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