超高压水晶釜内腔表面裂纹在役涡流检测

In-Service Eddy Current Testing for Surface Crack on Ultra-high Pressure Crystal Vessel

磁粉、渗透和打水压方法均无法有效用于超高压人造水晶釜内腔表面裂纹在役无损检测,超声波法难于判定早期缺陷,容易误判和漏判。涡流法需保持涡流探头在深达数米的内腔表面平稳地扫查。为此研制了涡流旋转耦合无线传输新技术。详细论述了轴向和周向裂纹的检测采集、信号旋转耦合、传输、存储记录的软硬件。经实验室验证和现场使用,有效解决在役金属管道内表面裂纹扫查检测问题。

The magnetic powder testing, penetrant testing and hydraulic methods are unable to effectively fight for in-service non-destructive testing for ultra-high pressure crystal vessel surface crack, ultrasonic testing is difficult to determine early defects, easy to misjudge and missing. Eddy current testing required the eddy current probe maintaining at a depth of several meters smooth lumen surface scanning. To this end, we developed a vortex rotating coupling wireless transmission technology. It discusses the capture, signal rotating coupling, transmission, storage, software and hardware records for axial and circumferential crack detection. With laboratory verification and field inspection, an effective solution of the in-service metal pipe surface crack detection problem.