X-ray digital nondestructive detection device and method of welding seam of storage tank

Abstract

The invention relates to an X-ray digital nondestructive detection device of a welding seam of a storage tank, and a detection method using the same, and mainly solves the problems of high flaw detection cost and influence on detection quality in the conventional X-ray film method. The device comprises a riding seat type gantry rack, movement guide mechanisms, a transverse movement mechanism, longitudinal movement mechanisms and a digital imaging system, wherein the riding seat type gantry rack consists of an outer rack and an inner rack; a mechanical buffer is arranged between the inner rack and the outer rack; the transverse movement mechanism is arranged at the upper end of the outer rack; two movement guide mechanisms are respectively arranged on the lower parts of the outer rack and the inner rack; and a longitudinal movement mechanism is respectively arranged on the opposite inner sides of the inner rack and the outer rack. The digital nondestructive detection on the welding seam of 0 to 3m through a digital imaging device and an X-ray flaw detector is realized by using each mechanism in the device and using a synchronization telescoping driving control method. The method is high in degree of automation, high in positioning accuracy and high in imaging speed; and the x-ray digital nondestructive detection on the welding seam of the storage tank can be reliably, objectively and accurately accomplished.

Description

technical field [0001] The invention relates to an X-ray digital non-destructive testing device for a weld seam of a storage tank and a testing method using the device. Background technique [0002] At present, X-ray flaw detection is widely used to detect the welding quality of storage tank welds. Due to the harsh construction conditions on site, the X-ray flaw detector is usually hung on the tank wall through a simple hanging cage, and it is pulled and moved by manpower, and manually pasted. Photographic flaw detection. The X-ray flaw detector exposes one film at a time, each film is 300mm long, and the circumference of a large storage tank is several hundred meters, so the workload of patching and film evaluation is huge. This storage tank weld seam is detected by X-ray film method because it needs to consume a large amount of film, resulting in high cost, long detection cycle, and high labor intensity. Due to the cumbersome process of patching and washing films and poor...

AI Technical Summary

Problems solved by technology

The X-ray film method is used for the flaw detection of the tank welds, because it needs to consume a large amount of film, resulting in high cost, long detection cycle, and high labor intensity. Due to the cumbersome process of patching and washing films, and poor real-time performance, the work efficiency is low, especially for high-altitude operations. , inconvenient operation, affecting the quality of detection

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