Orbital Pipe Welding with Seam Scanning for Hermetic Joints

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Solution Overview

Problem

Current pipeline welding methods rely heavily on human expertise and manual labor, leading to inefficiencies and potential leaks due to misalignment and uneven welding, which can result in operational halts and difficult repairs.

Innovation Solution

An Orbital welding apparatus and method utilizing pre-scanning and mapping techniques to position and level pipe segments accurately, with a synchronized welding device that applies welding material in layered, oscillating motions based on seam topography data, ensuring complete sealing and real-time monitoring for optimal results.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual welding methods are used with human expertise, then flexibility and adaptability in welding decisions are improved, but productivity and consistency deteriorate due to reliance on individual skills and labor intensity

Engineering Contradiction:

Improveadaptability in welding decisionsVSAvoidwelding productivity

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The welding system performs self-positioning and self-adjustment through automated scanning and sensing mechanisms that detect seam geometry and automatically adjust welding parameters, eliminating the need for continuous manual intervention while maintaining adaptability to varying seam conditions

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Manual mechanical positioning and visual inspection are replaced by automated optical scanning systems and sensors that detect seam topography and provide real-time feedback for adaptive welding control, significantly improving both productivity and consistency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If manual positioning and leveling of pipe segments are performed, then adaptability to misalignment is improved, but manufacturing precision and hermetic sealing deteriorate due to human error and fatigue

Engineering Contradiction:

Improveadaptability to misalignmentVSAvoidpositioning precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The system incorporates real-time feedback loops where sensors continuously monitor the actual positioning and leveling of pipe segments, compare against target values, and automatically adjust positioning mechanisms to achieve precise alignment and hermetic sealing

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

Positioning and leveling adjustments are performed preliminarily before welding begins, using automated scanning to identify misalignment and pre-positioning mechanisms to correct it, ensuring precise alignment is achieved before the welding process starts

Inventive Principle:

Principle #10Preliminary action

3Productivity

If automated orbital welding is implemented, then productivity and consistency are improved, but device complexity increases due to integration of scanning and positioning systems

Engineering Contradiction:

Improvewelding productivityVSAvoidapparatus complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

Multiple functions including scanning, sensing, positioning, and welding are merged into a single integrated orbital welding apparatus, where the welding torch assembly also incorporates scanning mechanisms and sensors, reducing the number of separate components while maintaining high productivity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The welding apparatus is designed with multi-functional components that perform multiple tasks simultaneously, such as the welding torch that also serves as a scanning platform and positioning reference, reducing overall system complexity while maintaining automated productivity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enables repeatable, efficient, and hermetically sealed pipeline connections, reducing reliance on human expertise and minimizing leaks, while allowing for precise control and optimization of the welding process to ensure continuous pipeline operation.

Implementation Method 1

a welding device which is carried over a traveling unit for travelling on curved surfaces such as those of pipes and welding interface surfaces between every two pipe segments

Methodology Applied

Scientific EffectElectric arc: Electric Arc

Data Source

PatentUS12162098B2Orbital welding of pipes and pipe segments

Publication Date: 2024.12.10 WELDOBOT

AI summary

The invention is an apparatus and method for Orbital welding of pipes or pipe segments together to form a pipeline, i.e., Orbital welding. A scanner welding unit, a control unit and a welding unit are combined to travel along and above a seam, which is formed between two interfacing base/cylindrical surfaces of every two pipe or pipe segments, scan the pipes/pipe segments relative positioning, alignment and levelling, and their surface geometry and topography and overlay a welding material starting from the root layer at the bottom of the seam and up to its edge and sealing it with a capping layer. The welding unit lowers a welding tip into the seam that may rotate on its axis at different angels relative to the surface during welding. The scanner unit may alert on mismatches on the relative position of the pipes/pipe segments before or after welding and in some cases enable repositioning for a more hermetically sealed weld.