Rotary mechanical equipment fault diagnosis method and system based on correlation analysis

Abstract

The invention relates to the technical field of fault diagnosis, and provides a rotary mechanical equipment fault diagnosis method and system based on correlation analysis. The method comprises the following steps: acquiring an operation vibration power spectrum of the rotary mechanical equipment under an operation condition, wherein the operation vibration power spectrum is obtained by converting a vibration signal of the rotary mechanical equipment in a vibration frequency domain within a set time period; calculating a correlation coefficient based on the operation vibration power spectrum and the fault power spectrum, wherein the fault power spectrum is a fault vibration power spectrum of the rotary mechanical equipment under a set fault; and obtaining a diagnosis conclusion of the set fault according to the correlation coefficient. On one hand, the operation complexity of fault diagnosis is simplified, and the efficiency of fault diagnosis is improved; and on the other hand, accurate fault types can be obtained in a more targeted manner, and effective support is provided for rapid fault positioning in a special environment.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis, in particular to a method and system for fault diagnosis of rotating machinery equipment based on correlation analysis. Background technique [0002] Along with the development needs of intelligence, modern large-scale mechanical equipment generally arranges multiple vibration sensors on important rotating equipment (such as steam turbines, generators, propulsion motors, etc. in ship equipment) to comprehensively monitor the rotating mechanical equipment in different directions. Vibration monitoring and analysis of the monitoring data, when the rotating machinery equipment is abnormal, an alarm signal will be sent out and the equipment will be shut down after manual confirmation, and the maintenance personnel will be notified to arrive at the scene in time. [0003] The above-mentioned traditional vibration acquisition and analysis system effectively guarantees the safe operation of the e...

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Problems solved by technology

[0006] The present invention provides a method and system for fault diagnosis of rotating machinery equipment based on correlation analysis, which are used to solve the defects of difficult fault location, low maintenance plan formulation efficiency, and long maintenance time in the prior art, and realize rapid positioning and efficient maintenance. Fault Diagnosis of Rotating Machinery Equipment

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