A non-destructive testing device and method for pipeline circumferential weld seam repair without excavation.

By integrating a scraper, abrasive disc, and vision sensor into a non-destructive testing device, the problem of poor detection performance of existing pipe circumferential weld inspection devices in complex and polluted environments has been solved. This enables efficient integrated operation of online cleaning and high-precision inspection, improving the accuracy and efficiency of inspection.

CN122170302APending Publication Date: 2026-06-09CHONGQING KENAVI ENVIRONMENTAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING KENAVI ENVIRONMENTAL TECH CO LTD
Filing Date
2026-03-31
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing pipeline circumferential weld inspection devices perform poorly in complex and polluted environments and lack online automated preprocessing functions, resulting in low inspection accuracy and efficiency.

Method used

A non-destructive testing device integrating a scraper, abrasive blade, and vision sensor was designed. It achieves online cleaning and high-precision testing through a flexible telescopic arm structure, adapts to different pipe diameters, and can stably and efficiently complete cleaning and testing operations inside pipelines.

Benefits of technology

It significantly improves the ability to identify and assess defects in circumferential welds in complex and polluted environments, increases detection efficiency, reduces costs, and ensures uniformity and consistency in processing and detection.

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Abstract

This invention relates to the field of pipeline circumferential weld inspection technology, specifically a non-destructive testing device and method for pipeline circumferential welds that allows for excavation-free repair. The device includes a mobile vehicle with a lifting platform mounted on it. The lifting platform is driven by a first drive device mounted on the mobile vehicle and can be raised and lowered. A rotating shaft is rotatably mounted on the lifting platform, and three elastic telescopic arm structures are evenly spaced along its circumference. Each elastic telescopic arm structure includes a guide sleeve, a sliding arm, and a spring. The guide sleeve is fixed to the rotating shaft and slides in cooperation with the sliding arm. This invention integrates the functions of a scraper, a grinding disc, and a vision sensor, achieving integrated online cleaning, grinding, and visual inspection of pipeline circumferential welds. This effectively solves the problems of poor inspection results, cumbersome procedures, and low efficiency in existing technologies for dirty welds, significantly improving the reliability and efficiency of the inspection.
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