Application of Ultrasonic Combined Detection to Periodic Inspection of Gas Cylinder

Analyzed here in the essay are the structural characteristics of the large volume,long gas cylinder,and the defect cases as identified during the periodic inspection thereof. Also described are the application and relvant cases of the ultrasonic detection method as used for the straight section and the top threaded section of the gas cylinder during the periodic inspection.After getting the sound field coverage calculated out,partition detections are performed to the transitional section of the bottle shoulder (bottle neck) by means of the phased array and the TOFD processes. Furthermore the process verification is conducted with the special probe and the reference block. As a result full-area coverage detection is realized during the periodic inspection to the large volume seamless steel gas cylinder with the automatic ultrasonic detection method.