Device and method for conducting vibration monitoring and fault early warning on centrifugal pump

Abstract

The invention discloses a device and method for conducting vibration monitoring and fault early warning on a centrifugal pump. The vibration condition of the centrifugal pump is collected through a piezoelectric type vibration acceleration sensor and input into a host computer through a multichannel data acquisition card, so that centrifugal pump vibration signals are formed. The method for conducting vibration monitoring and fault early warning through the device includes the steps of simulating centrifugal pump faults, and collecting fault signals; conducting noise elimination processing onthe fault signals; conducting feature extraction on the noise elimination signals; establishing a centrifugal pump fault feature vector; operating a centrifugal pump set, and also conducting noise elimination processing and feature extraction on the signals collected by the vibration sensor, so that a comparison feature vector is obtained; and comparing the comparison feature vector with a simulation feature vector, so that whether faults exist in a corresponding measure point of the centrifugal pump or not is known. The device and the method have the beneficial effects of being low in cost, easy to implement and great in universality. Early warning results are concise and clear, and fault early warning accuracy and efficiency of the centrifugal pump are improved.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis, and in particular relates to a device and method for vibration monitoring and fault early warning of a centrifugal pump. Background technique [0002] Centrifugal pumps are important equipment in the modern process industry. They are widely used in refining, metallurgy, power generation, oil extraction, food and pharmaceutical industries. They play a very important role in the stability, safety and reliability of the production process. Therefore, the operation of centrifugal pumps Condition monitoring and evaluation and diagnosis and maintenance research are of great significance to maintain its good operation and reduce production accidents caused by equipment failure. At present, the fault diagnosis research of centrifugal pumps at home and abroad mainly uses the vibration signal of the unit to analyze and judge whether there is a fault in its operating state, and to identify and make ...

AI Technical Summary

Problems solved by technology

This fault diagnosis method can prevent serious accidents caused by centrifugal pump faults to a certain extent, but because fault identification often requires obvious differences between different fault vibration signals, the centrifugal pump has entered a more obvious fault operating state, that is, Effective fault identification can only be carried out when the characteristics of the fault are relatively obvious

That is to say, the fault diagnosis research work did not use early fault vibration signals to carry out vibration monitoring and fault early warning of centrifugal pumps to prevent and avoid further deterioration of faults in advance, which may lead to complete failure or even complete scrapping of the unit

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