Research on the Method for Evaluating the Safety Status of the Cooling Tower Structure in Thermal Power Plant
The cooling tower of a thermal power plant is the core component of the thermal power system;it is a tall and large-volume concrete structure.It has a high safety operation guarantee rate and is in a humid and harsh environment for a long time.The structural safety and durability requirements are high.How to evaluate its service safety is the key to ensure efficient and safe operation of power plants.This paper takes the cooling tower of a power plant,aiming at the engineering operation and maintenance problems such as general aging of concrete,local deterioration and deformation of the structure,partial degradation of the overall function and hidden leakage of drainage facilities during the service period of the cooling tower,using UAV-mounted image recognition technology to detect external apparent defects of cooling towers,using rebound method,magnetic induction method,half-cell potential method and Beidou positioning technology to detect deformation and durability of concrete and metal structures indicators,etc.Then,based on the structural performance parameters measured on site,the three-dimensional finite element simulation analysis of the cooling tower structure was carried out,and the structural response characteristics of the cooling tower under normal operating conditions were given;give the structural stability and durability evaluation conclusions of thermal power plant cooling towers,and ensure the safe and efficient operation of thermal power plant cooling towers and water intake and drainage facilities.The methods,technologies and results obtained in this paper can be used for the service safety evaluation of similar buildings.
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