Boiler abnormal working condition diagnosis and operation optimization method based on fault tree

Abstract

The invention discloses a boiler abnormal working condition diagnosis and operation optimization method based on a fault tree. At present, boiler operation, maintenance and fault processing take measures depending on personal experience, judgment and operation optimization methods for abnormal working conditions have large differences, improper operation can cause shutdown of a boiler, and damageis caused to boiler equipment. The method comprises the following steps: 1, carding expert knowledge, establishing an expert knowledge base, and constructing a top-layer decision mechanism of a faulttree; 2, building a fault library covering all abnormal working conditions of all types of boilers, and building a middle transition layer of a fault tree; 3, constructing a boiler performance dynamicdatabase by using boiler design data and operation data, comparing the boiler performance dynamic database with boiler actual operation data, and establishing a fault tree base layer; and 4, establishing an intermediate conversion layer unit, connecting the boiler measuring point abnormal data with the boiler abnormal working condition, and correspondingly connecting the fault tree with the boiler database. The method is used for boiler abnormal working condition diagnosis and operation optimization based on the fault tree.

Description

Technical field: [0001] The invention relates to a fault tree-based method for diagnosing abnormal operating conditions of a boiler and optimizing operation. Background technique: [0002] After years of exploration and development in the boiler industry, the market and technology have become mature. Boilers of various types and capacities are used in thermal power plants, and through the operation of thermal power plants, a large amount of experience in boiler operation, maintenance and troubleshooting has been accumulated. Boiler technology and accumulated experience should be sorted out and summarized to form a systematic and standardized boiler fault handling and operation optimization method; the current boiler operation, maintenance and fault handling in thermal power plants rely on the personal experience of power plant personnel to respond Measures, if abnormal working conditions occur during boiler operation, based on personal knowledge and experience, there are lar...

AI Technical Summary

Problems solved by technology

[0002] After years of exploration and development in the boiler industry, the market and technology have become mature. Boilers of various types and capacities are used in thermal power plants, and through the operation of thermal power plants, a large amount of experience in boiler operation, maintenance and troubleshooting has been accumulated. Boiler technology and accumulated experience should be sorted out and summarized to form a systematic and standardized boiler fault handling and operation optimization method; the current boiler operation, maintenance and fault handling in thermal power plants rely on the personal experience of power plant personnel to respond Measures, if abnormal working conditions occur during boiler operation, based on personal knowledge and experience, there are large differences in the judgment of abnormal working conditions and operation optimization methods, and even when emergency working conditions occur in boiler operation, improper operation may lead to shutdown , not only causing economic losses, but also causing damage to boiler equipment;

[0003] During the production process of thermal power plants, there are many kinds of abnormal working conditions of boilers, which have caused great troubles to the operators of thermal power plants. If they want to fully grasp the abnormal working conditions of boilers, they need to accumulate experience over time, the cycle is too long, and the occurrence of abnormal working conditions will bring The resulting economic loss is immeasurable; currently, thermal power plants still rely on human experience to deal with boiler abnormal conditions, and the efficiency is low. Due to differences in individual knowledge and experience, there are different strategies for boiler abnormal condition diagnosis and operation optimization. However, the processing results are often not ideal; currently there is no systematic diagnosis and operation optimization method for abnormal boiler conditions, which cannot be based on fault trees

Images