Segmented Buoyancy Module Clamping for Offshore Installation
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Solution Overview
Problem
Existing buoyancy modules for offshore applications face challenges in accurate and efficient installation, particularly when deployed at sea, leading to increased project costs and vessel stoppages due to cumbersome and labor-intensive processes.
Innovation Solution
A buoyancy module comprising a pair of module bodies secured together using single bolt tensioners, each with recesses and pad containment channels, allowing for precise attachment to cables, pipes, or umbilicals through a method involving positioning, alignment, and tensioning of bolt tensioners to achieve desired clamping pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional clamping mechanisms with large hydraulic tools and multiple bolts are used, then secure attachment to cables and pipes is achieved, but installation becomes cumbersome and labor-intensive
Solution Approach 1:
The buoyancy module is divided into multiple segmentable bodies that can be assembled together around the cable or pipe. Each body can be independently positioned and secured, allowing the installation team to work with smaller, more manageable components rather than handling a single large complex assembly
Solution Approach 2:
The module bodies are pre-configured with integrated clamping mechanisms and alignment features during manufacturing. The clamping mechanism includes pre-positioned bolts and tensioning elements that are ready for installation, eliminating the need for complex on-site assembly procedures and large hydraulic tools
2Manufacturing precision
If precise tensioning force is applied to secure the clamping mechanism, then installation precision is improved, but the installation process becomes more time-consuming and complex
Solution Approach 1:
Alignment features such as guide rails, positioning pins, and keyed interfaces are incorporated into the module body design. These features automatically align the module with the cable or pipe during installation, ensuring precise positioning without requiring complex measurement and adjustment procedures
Solution Approach 2:
The clamping mechanism incorporates self-tensioning features where the tightening of a single bolt or lever automatically applies the correct tensioning force to secure the attachment. The design includes self-aligning elements that automatically position the module correctly as it is being installed, reducing the need for manual adjustment and precision control by the installation team
3Adaptability or versatility
If installation is performed at sea, then offshore application requirements are met, but the process becomes significantly more complex and causes frequent vessel stoppages
Solution Approach 1:
The buoyancy module is divided into multiple segmentable bodies that can be assembled together around the cable or pipe. Each body can be independently positioned and secured, allowing the installation team to work with smaller, more manageable components rather than handling a single large complex assembly
Solution Approach 2:
The module incorporates self-aligning and self-securing features that reduce the need for complex installation equipment and procedures. The design allows the module to automatically position itself and secure to the cable or pipe with minimal intervention, reducing vessel stoppages and simplifying offshore installation operations
Data Source
AI summary
Disclosed herein are novel buoyancy modules for attachment to a cable, pipe, or umbilical. The buoyancy modules include a pair of module bodies adapted to mate with each other. Each module body has a recess adapted to engage a single bolt tensioner and at least one of the module bodies includes a longitudinal channel running the length of the module body. Further, the module bodies include one or more pads positioned within a pad containment channel. A plurality of single bolt tensioners may be positioned within the recesses of the module bodies and tensioned to impart a compressive force such that the module bodies contact each other, generating a predetermined displacement of the pad and thereby imparting a known clamping force that results in a desired clamping pressure being applied by the pad to the cable pipe or umbilical.