Method for identifying and positioning fault of key air cooler tube bundle in unmanned aerial vehicle inspection

Abstract

The method comprises the following steps: establishing a key evaluation standard of an in-service air cooler of a petrochemical enterprise, carrying out key evaluation on the in-service air cooler, and determining the key air cooler; collecting a tube bundle infrared thermal imaging image of a key air cooler through an infrared thermal imager carried by an unmanned aerial vehicle, preprocessing the infrared thermal imaging image, and establishing a standard data set file; constructing a key air cooler tube bundle infrared thermal imaging image feature extraction neural network, and performing training to obtain an image feature map; building a key air cooler tube bundle infrared thermal imaging image fault target recognition and fault area positioning detection neural network, using an image feature graph for training to form a model, and detecting and identifying infrared visual images collected by an infrared video collection device; and controlling a water supply valve according to a detection and identification result, formulating a maintenance strategy, and carrying out preventive maintenance on the key air cooler. Detection of the air cooler tube bundle in the operation stage is more comprehensive and meticulous, and a large amount of manpower and material resources are saved.

Description

Technical field [0001] The present invention relates to an air cooler tube bundle fault identification and a positioning method. In particular, there is a method of failure identification and positioning method for a drone inspection key empty cooler. Background technique [0002] The petrochemical industry is a high energy-consuming industry, and a small improvement in the production process will bring huge economic benefits. The air cooler is one of the most commonly used equipment in petrochemical production. The air censor is caused by a large blower to generate a lateral flow of air and an air-cooler tube to cool the tube medium, and the velvet in the petrochemical device is mostly cooling hydrogenated reaction distillate. High-pressure empty censor, working in high pressure, hydrogen production and corrosion media, the conditions of conditions are more demanding, especially in recent years, petrochemical enterprises have multi-sulfur crude oil, hydrocarbon reactor in high-p...

AI Technical Summary

Problems solved by technology

[0004] At this stage, the general air cooler tube bundle inspection is mostly carried out by hand-held infrared thermal imagers near the air cooler tube bundle, but this method can only detect part of the entire air cooler tube bundle. This method is not only incomplete and comprehensive, but also A lot of manpower and material resources are wasted. Therefore, it is particularly necessary to develop a computer vision-based UAV inspection air cooler tube bundle fault target recognition and positioning method.

So far, there is no complete system and method for identifying and locating fault targets of air cooler tube bundles in large petrochemical plants

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