Open-Ring Cable Wrapping for Automated Pipeline Installation
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Solution Overview
Problem
Existing methods for applying cables to underwater pipelines face challenges such as limited space on laying vessels, difficulty in cable application during the J-lay launching method, and risks associated with manual operations, particularly when joining pipeline sections.
Innovation Solution
A machine with a rotating open ring structure and gripping and moving device that allows for automatic cable application around the pipeline, featuring motorized tracks for controlled movement, multiple unwinding devices, a strapping apparatus for securing straps, and a remotely operated vehicle (ROV) for installation and operation support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable application is performed manually on board a laying vessel during the launching phase, then the cable can be applied to the pipeline, but the operations involve risks and the space available is limited
Solution Approach 1:
The machine applies the cable automatically as it moves along the pipeline, without requiring manual intervention. The gripping members automatically engage with the pipeline, the rotating open ring structure automatically winds the cable, and the strapping apparatus automatically secures the cable, making the system self-sufficient and eliminating manual operational risks
Solution Approach 2:
Manual mechanical operations are replaced by an automated machine system that integrates gripping members, a rotating open ring structure with unwinding devices, and a strapping apparatus. This mechanical substitution eliminates the need for personnel to perform risky manual cable application operations in limited space
2Productivity
If cable application is performed during J-lay launching method, then the pipeline can be launched, but it is relatively difficult to apply the cable around the pipeline before the laying
Solution Approach 1:
The machine is designed to apply the cable to the pipeline before the pipeline is laid into the water body. The gripping members engage with the pipeline section on the vessel, and the rotating open ring structure winds the cable around it in advance, preparing the pipeline-cable assembly for subsequent launching operations
Solution Approach 2:
The machine incorporates a rotating open ring structure that can dynamically adjust its position and rotation as it moves along the pipeline. The gripping members are movable between open and closed positions to accommodate the pipeline, and the entire system adapts to the dynamic conditions of the J-lay launching process
3Adaptability or versatility
If individual sections of the pipeline are joined, then the pipeline can be assembled, but it is also necessary to join the individual sections of the cable
Solution Approach 1:
The machine combines the pipeline joining operation with the cable application operation into a single integrated process. As the machine moves along the pipeline and applies the cable continuously, it accommodates the joining of pipeline sections without requiring separate cable joining operations, thereby simplifying the overall process
Data Source
AI summary
A machine for applying at least one cable to a pipeline comprises: a frame extending along a longitudinal axis; a gripping and moving device mounted on the frame and configured to couple the machine around the pipeline and move the machine along the pipeline in a travel direction parallel to the longitudinal axis; and a cable application equipment comprising a rotating open ring structure, which is configured to rotate with respect to the frame and around the pipeline when the machine is gripping the pipeline; and an unwinding device for the controlled unwinding of a reel of cable; unwinding device being mounted on rotating open ring structure.