Boiler heating surface abnormal image identification and marking method and system

Abstract

The embodiment of the invention provides a boiler heating surface abnormal image identification and marking method and system, and the method comprises the steps: obtaining a large number of in-boiler heating surface images which are artificially identified as normal heating surface images and different types of abnormal heating surface images, and carrying out the preprocessing of each heating surface image, and obtaining preprocessed heating surface images; extracting features from each preprocessed heating surface image by using a feature learner, and training the features of each preprocessed heating surface image to obtain an image identification model; identifying the collected heating surface image in the furnace through the image identification model, and identifying an abnormal heating surface image; and drawing a three-dimensional model consistent with the actual size and spatial distribution of the boiler according to a boiler design drawing, and marking the abnormal heating surface image on the boiler model to form a diagnosis report. Whether the heating surface in a boiler is abnormal or not is identified through the image identification model, the abnormal heating surface image is marked on the boiler model and sent to maintenance workers, and manpower input is reduced.

Description

technical field [0001] The invention relates to the field of coal power, in particular to a method for identifying an abnormal image of a heating surface of a boiler, a marking method and a system. Background technique [0002] Coal-fired power plants will produce Dali ash, sulfur and nitrogen oxide substances during daily production and operation. These substances are sometimes deposited on the surface of the heating surface in various forms during the operation of the boiler, causing coking on the heating surface , ash accumulation, corrosion, boiler coking, ash accumulation, and corrosion not only increase the heat transfer resistance of the heating surface of the boiler, deteriorate the heat transfer of the heating surface, reduce the thermal economy of the boiler, but also may cause the blockage of the flue gas channel, affecting the safety of the boiler In severe cases, equipment damage and personal injury accidents may occur. [0003] In the process of realizing the ...

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Problems solved by technology

[0002] Coal-fired power plants will produce Dali ash, sulfur and nitrogen oxide substances during daily production and operation. These substances are sometimes deposited on the surface of the heating surface in various forms during the operation of the boiler, causing coking on the heating surface , ash accumulation, corrosion, boiler coking, ash accumulation, and corrosion not only increase the heat transfer resistance of the heating surface of the boiler, deteriorate the heat transfer of the heating surface, reduce the thermal economy of the boiler, but also may cause the blockage of the flue gas channel, affecting the safety of the boiler In severe cases, equipment damage and personal injury accidents may occur

[0003] In the process of realizing the present invention, the applicant found that there are at least the following problems in the prior art: due to coking, dust accumulation and corrosion on the heating surface of the boiler, it not only increases the heat transfer resistance of the heating surface of the boiler, reduces the thermal economy of the boiler, and may also cause The blockage of the flue gas passage affects the safe operation of the boiler. Coal-fired power plants will use the maintenance experience to regularly check the heating surface of the boiler by taking advantage of the shutdown opportunity

Although the current maintenance location has fully considered the operating conditions of the boiler, the efficiency is low due to the limitation of vision and maintenance experience

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