Boiler water-cooled wall temperature distribution rapid detection, analysis and evaluation system

Abstract

The invention discloses a boiler water-cooled wall temperature distribution rapid detection, analysis and evaluation system. The system comprises the following steps: cleaning the surface of a water-cooled wall pipe; positioning and marking: numbering the wall pipes in the horizontal counterclockwise direction and marking the numbered wall pipes; collecting and recording wall temperature data of the water-cooled wall: moving a thermal infrared imager to shoot the water-cooled wall, wherein an obtained heat map comprises two marks; water wall pipe position identification: automatically identifying and judging the arrangement and position distribution of the wall pipes through marks on the heat map; analyzing the wall temperature: automatically extracting the highest temperature, the lowesttemperature and the average temperature of each water wall pipe by a computer; alarming when the wall temperature of the water-cooled wall is abnormal: the system gives an alarm when the wall temperature is abnormal; report generation and processing: selecting data and information needing to be formed into a report from a database, and automatically generating the report; and alarm query statistics: querying alarm record data according to different categories. The method is simple and accurate in wall pipe number positioning and identification, can quickly identify, extract and sort out the heat map, and is low in cost and high in accuracy.

Description

technical field [0001] The invention belongs to the technical field of boilers in thermal power plants, and in particular relates to a rapid detection, analysis and evaluation system for the wall temperature distribution of a water-cooled wall of a boiler. Background technique [0002] At present, the over-temperature monitoring of boiler water-cooled walls can only rely on the existing limited number of wall temperature measuring points. Only some boilers have a relatively large number of wall temperature measuring points on the lower water-cooled walls. The lower spiral water wall can only have one measuring point every 5 to 10, and the number of measuring points on the upper water wall is even less. Most of the water-cooled wall tube overheating can only be discovered through the forced shutdown of the overheated tube, and the probability of being discovered when the overheating of the unit happens to be discolored or deformed and swollen during the planned maintenance of...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a rapid detection, analysis and evaluation system for boiler water-cooled wall temperature distribution. Cooperating with a special infrared thermal imager, it can solve the problems of tube number positioning, image processing and data acquisition in actual on-site detection. And data comparison and analysis are all due to low manual efficiency, numerical analysis reports cannot be automatically generated, etc., it can quickly determine whether the water-cooled wall tube is over-temperature and alarm

Images