Apparatus and method for evaluating the life of heat exchange tubes of biomass fuel boilers

Abstract

The invention discloses a device and method for evaluating the life of a heat exchange tube of a biomass fuel boiler. The device is composed of a pipe thickness gauge, a temperature sensor, a cloud service platform, and a visual interaction platform. Service platform connection; the cloud service platform has the functions of data calculation, comparison and storage, and transmits the calculation results to the visual interaction platform; the visual interaction platform provides curve, 3D modeling, printing, and life-span early warning services. In this method, the type of heat exchange tube is determined through this device, and the cloud service platform calculates the remaining life of the superheater tube, economizer tube or water wall tube respectively, and the visual interactive platform outputs the calculation result of the remaining life of the heat exchange tube, and sends Remaining life early warning signal, providing remaining life control measures and biomass fuel boiler heat exchange tube maintenance operation plan. The device and method realize the quantitative evaluation and regular monitoring of the service life of the heat exchange tubes, so as to ensure the safe and reliable operation of the boiler.

Description

technical field [0001] The invention relates to a device and method for evaluating the life of a heat exchange tube of a biomass fuel boiler. Background technique [0002] General boiler heat exchange tubes mainly include four types of water wall tubes, economizer tubes, superheater tubes, and reheater tubes; The surface is severely corroded by alkali metals during operation. Different from the failure forms of heat exchange tubes in traditional coal-fired boilers caused by overheating, creep, corrosion and fatigue, the failure of heat exchange tubes in biomass fuel boilers is mainly the result of the combined effects of overheating and corrosion. [0003] In a biomass fuel boiler, the elemental analysis of the fuel entering the furnace cannot determine the amount of alkali metal elements released during the combustion process of the fuel, and thus cannot evaluate its impact on the life of the heat exchange tubes of the biomass fuel boiler and the corrosion of the heat exch...

AI Technical Summary

Problems solved by technology

[0003] In biomass fuel boilers, the elemental analysis of the fuel entering the furnace cannot determine the amount of alkali metal elements released during the combustion process of the fuel, and thus cannot evaluate its impact on the life of the heat exchange tubes of the biomass fuel boiler and the corrosion of the heat exchange tubes. situation, and it is impossible to monitor the corrosion of heat exchange tubes during the operation of biomass fuel boilers

With the increase of running time, when the wall thickness of the boiler heat exchange tube reaches a critical size, the tube burst may occur, resulting in an accident in the boiler operation

Most of the existing biomass fuel boiler heat exchange tube life assessments are estimated only based on operating experience, and there are no suitable devices and methods for biomass fuel boiler heat exchange tube life assessment

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