1185. Fault diagnosis of pump valve spring based on improved singularity analysis

The fracture of pump valve springs is another typical fault of emulsion pump with high pressure and large discharge, which greatly influences the volumetric efficiency of emulsion pump. The fault diagnosis on pump valve springs of emulsion pump was analyzed based on the singularity analysis of conti...

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Bibliographic Details
Published inJournal of Vibroengineering Vol. 16; no. 2; pp. 704 - 712
Main Authors Songyong, Liu, Xiaohui, Liu, Xiaoming, Han, Xinxia, Cui
Format Journal Article
LanguageEnglish
Published JVE International Ltd 01.03.2014
Subjects
Analysis
Equipment and supplies
Fault location (Engineering)
Identification and classification
Mechanical properties
Springs (Mechanism)
Valves
Wavelet transforms
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Summary:The fracture of pump valve springs is another typical fault of emulsion pump with high pressure and large discharge, which greatly influences the volumetric efficiency of emulsion pump. The fault diagnosis on pump valve springs of emulsion pump was analyzed based on the singularity analysis of continuous wavelet transform. The improved method for Lipschitz index was presented with better robustness and efficiency based on the Least Square Method. The criterion for the fracture of pump valve was confirmed. Diagnostic results indicate that it is accurate and effective of the improved method to locate the singularity of signals, identify the moment when the valve disc impacts on base or lift limiter and judge the fault diagnosis of pump valve.
ISSN:1392-8716