METHOD FOR INSPECTION OF THE SURFACE CONDITION OF A TUBE
Laser-based inspection methods for tubes in high-temperature environments address surface roughness issues, providing precise damage assessment and enabling proactive maintenance strategies.
FR3158361B1Active Publication Date: 2025-12-05LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE +1
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Patent Information
- Application Number
- FR2024000455
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2044-01-17
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Abstract
The present invention relates to a method for inspecting a tube (1), in particular a catalytic tube used in a chemical reforming process, by means of a plurality of laser sensors (11.1-11.4) comprising: - a step of acquiring a circumferential profile (PC1-PC4) for each laser sensor (11.1-11.4), each circumferential profile (PC1-PC4) extending along an angular sector of the circumference of the tube (1), - a step of reconstructing an external circumferential face, called the outer skin (Pext) of the tube (1), from the circumferential profiles (PC1-PC4) generated by the laser sensors (11.1-11.4), - a step of determining an ovality parameter (Kov) of the tube (1), - a step of determining a local deformation parameter (Kdef) of the tube (1), and - a step of determining a level of damage (Nend) of tube (1) as a function of the ovalization parameter (Kov) of tube (1) and the local deformation parameter (Kdef) of tube (1). Figure 3
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