Dual-camera monitoring welding quality device for ultra-thick-walled high-alloy steel pipelines

Abstract

The invention relates to a dual-camera device for monitoring the welding quality of super-thick-wall high alloy steel pipelines. According to the dual-camera device for monitoring the welding quality of super-thick-wall high alloy steel pipeline, two detachable gear rails are symmetrically arranged at the peripheries of the two sides of the beveled edge between two pipelines to be welded, the two detachable gear rails are connected with two camera devices through two connecting parts, and the two camera devices are obliquely and symmetrically arranged. The camera devices comprise fastening screws arranged at the left ends of the connecting parts, antiskid rail blocks arranged at the right ends of the connecting parts, small mesh gears arranged in the connecting parts and connected with the antiskid rail blocks and fixed seats arranged at the upper ends of the connecting parts. Cameras are arranged at the top ends of the fixed seats, photoelectric sensors are arranged at the upper ends of the fixed seats, and the photoelectric sensors are connected with the antiskid rail blocks through transmission lines. The dual-camera device can accurately decide types and specific sizes of welding defects and locate the positions of the welding defects, can effectively reduce the work amount for patching on-site welding junctions, improves work efficiency and reduces construction cost.

Description

technical field

[0001] The invention belongs to the field of video monitoring and control of the whole process of welding quality of ultra-thick-walled pipelines of 1000MW ultra-supercritical thermal power units, and in particular relates to a dual-camera monitoring device for welding quality of ultra-thick-walled high-alloy steel pipelines. Background technique

[0002] At present, high-temperature and high-pressure steam pipes in the thermal system of domestic 1000MW ultra-supercritical thermal power units generally use high-alloy martensitic heat-resistant steel, such as SA335P91, SA335P92, etc. Thick, poor weldability, prone to harmful defects such as incomplete fusion, incomplete penetration, slag inclusions, cracks, etc., which have a serious impact on the quality of welded joints. However, the existing non-destructive testing methods on the construction site have certain limitations in the determination of welding defects. For example, radiographic testing can qualita...

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