压力容器焊缝无损检测技术优化及应用

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中图分类号：TG441.7 文献标志码：A文章编号：1001-5922（2026）03-0871-04

Optimization and application of non-destructive testing technology for pressure vessel welds

XIANG Jiahua

（Guangxi Zhuang Autonomous Region Special Equipment Inspection Institute，Qinzhou 5350o，Guangxi China）

Abstract：This paper expounds the application efect of ultrasonic testing technology in the weld inspection of pressure vessels for hydrogenation reactors in refineries.By optimizing the probe parametersand scanning process，an efficient inspection of 15m welds within 3.5 hours was achieved.A total of 32 over-standard defects were actually detected，with a positioning accuracy of ±1mm and a dimensional measurement error of ±0.5 mm. The study found thatlack offusion defects wereconcentrated inthe fusion linearea，slag inclusions were mainlydistributed between weld layers，and acoustic wave interference occurred in the near-bottomarea.The application of this technology has increased the fatigue life of the vessel by more than 40% and reduced the risk grade from ASME Class M to Class I，which verifies its core value in ensuring the safe operation of pressure vessels.

Key words ： pressure vessel; weld inspection ;ultrasonic technology ;defect identification ;safety asessment

压力容器作为能源化工领域的核心设备，其焊缝质量直接影响装置安全运行。（剩余7066字）