电厂金属设备超声检测技术应用分析

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中图分类号：TM621 文献标识码：A 文章编号：1672-3791（2026）04-0070-03

Analysis of the Application of Ultrasonic Testing Technology for Metal Equipment in Power Plant

SU Xiaoyang ZHANG Lei²

1.Shandong Special Equipment Inspection Institute Group Co.，Ltd.; 2.HuadianElectric Power Research Institute Co.，Ltd.，Ji'nan，ShandongProvince，25oooo China

Abstract：Aiming atthe problem of fault diagnosis and maintenance of metal equipment in power plant，this study establishes a multi-dimensional ultrasonic testing technology system，integrates TOFD，phasedarryand conventional pulseecho method，and develops a defect clasification decision model and digital maintenance system.The practice shows that the detection rate of transverse cracks by phased array detection is 98.2% ，the maintenance plan reduces the total cost by 40.8% ，and the repair accuracy is controlled at ±0.05 mm.Through the verification of a 600 MW unit，the leakage rate was successfully reduced from 12kg/h to less than 0.5kg/h ，and the vibrationamplitude was reduced by 60% ，forming a full process solution in accordance with ASME standard.

KeyWords： Ultrasonic testing; Decision model; Metal equipment; Digital maintenance;Defect clasification

随着超临界机组参数提升，金属设备在高温高压环境下的失效风险显著增加。（剩余4310字）