关键词: 电容传感器, 无损检测, 焊缝检测

Abstract: Application of coating process is an important link in pipeline corrosion prevention technology. It is important to get the best anti-corrosion protection layer and the coating process of the pipeline. Therefore, it is necessary to conduct effective detection of pipeline weld location area. Combining with the characteristics of pipeline coating process, based on the advantages and disadvantages of several kinds of commonly used detection scheme comparison, demonstrates the feasibility of detection technology based on the non-contact measuring capacitance method, and at the same time the pipe weld position detection results are data analysis and processing, and rapid transmission to the spraying device control host, effectively control the seam thickness, thus achieve the goal of improve the quality of coating.

Key words: Capacitance sensor, Nondestructive testing, Weld inspection