A fault analysis and diagnosis method for a slurry circulating pump of a desulfurizing tower

Abstract

The invention relates to a fault analysis and diagnosis method for a slurry circulating pump of a desulfurizing tower, which comprises the following steps of collecting the historical data, and normalizing the processed data; constructing a training and prediction sample, and learning by adopting a BP neural network method; training of the BP neural network is completed, and constructing a slurrycirculating pump motor current analysis system; in combination with the actual desulfurization efficiency, clustering the motor current of the slurry circulating pump; constructing a probabilistic neural network model according to a classification result; utilizing a probabilistic neural network model to diagnose the motor current of the slurry circulating pump in real time, and giving a fault probability; and combining the fault prediction and diagnosis to construct a slurry circulating pump fault analysis and diagnosis system. The method is suitable for solving the problem of fault analysisand diagnosis of the slurry circulating pump in the wet desulphurization system, can help an operator to predict the type and trend of a fault which may occur in the future by using real-time operation data of the system, and has the very high practical application value.

Description

technical field [0001] The invention relates to a fault analysis and diagnosis method of a desulfurization tower slurry circulation pump based on Bayesian classification rules and a neural network, and belongs to the fields of equipment reliability analysis, equipment failure analysis and equipment failure diagnosis. Background technique [0002] The pollution of sulfur to the environment is relatively large, the pollution of sulfur oxides and hydrogen sulfide to the atmosphere, and the pollution of sulfate and hydrogen sulfide to water bodies are the focus of environmental protection work at present. A large amount of coal is burned in the production process of thermal power plants, and coal often contains a certain amount of sulfur, which will release a large amount of SO after combustion 2 , If it is not treated, it will cause great harm to the environment. Therefore, desulfurization equipment is generally used in the power industry at present. [0003] The limestone / gyp...

AI Technical Summary

Problems solved by technology

Slurry circulation pump failure is a common problem. Traditional slurry circulation pump failure analysis and diagnosis methods are time-consuming and laborious, relying on the operation and operation experience of on-site operators, and the timeliness, rapidity and effectiveness of failure analysis and diagnosis are not good.

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