System and method for condition monitoring and fault diagnosis of rotating machinery

Abstract

The invention provides a rotating machinery condition monitoring and fault diagnosing system and method. The system comprises a data acquiring subsystem, a holographic spectral analysis subsystem and a space vibration mode analysis subsystem, wherein the data acquiring subsystem is used for carrying out DC blocking and filter processing on an acquired signal through a sensor and then sending the signal to the holographic spectral analysis subsystem and the space vibration mode analysis subsystem, the space vibration mode analysis subsystem is used for carrying out look-ahead analysis on a time domain waveform and an amplitude spectrum and determining possible faults of a rotor system of rotating machinery preliminarily, and then the holographic spectral analysis subsystem and a shafting space vibration mode analysis subsystem are used for extracting fault features and diagnosing fault cause. According to the rotating machinery condition monitoring and fault diagnosing system and method, the vibration condition of the rotor system can be monitored through the data acquiring subsystem when the rotating machinery is in an on-line working state, and therefore safety of the operation of the rotor system is improved, economic losses caused by machine halt are reduced, and engineering practice is better fit.

Description

technical field [0001] The invention relates to the field of state monitoring and fault diagnosis of rotating mechanical equipment, in particular to a rotor system state monitoring and diagnosis system and method based on holographic spectrum technology and shafting space mode shape. Background technique [0002] Rotating machinery is widely used in many important fields such as power, electric power, chemical industry, metallurgy and machinery manufacturing, and is usually the key equipment in the production process of enterprises. Its health status not only affects the operation of the mechanical equipment itself, but may also affect subsequent production. In severe cases, it will cause heavy losses to the national economy, and even lead to accidents involving machine crashes and fatalities. In order to ensure the safe operation of the unit, reduce the maintenance cost of the unit and improve the utilization rate of the unit, it is very necessary for the condition monitori...

AI Technical Summary

Problems solved by technology

Its health status not only affects the operation of the mechanical equipment itself, but may also affect the subsequent production. In serious cases, it will cause heavy losses to the national economy, and even lead to accidents involving machine crashes and fatalities.

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