Adjustable Tensioner Pad for Pipe Diameter Adaptation
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Solution Overview
Problem
Existing track-type tensioner systems require frequent replacement of tensioner pads to accommodate pipes of varying diameters, which is a time-consuming and difficult process, especially in offshore pipelaying applications, as fixed pads are only adaptable to a specific range of diameters and adjustable pads need manual operator intervention.
Innovation Solution
A tensioner pad assembly with an auto-adjustable mechanism that includes inclined lateral surfaces and a spring-based adjustment device, allowing independent or dependent translations of central and lateral segments relative to the mounting support, enabling automatic adaptation to different pipe diameters through a combination of segment shafts, cranks, and oblong rings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed tensioner pads are used, then the structure is simple and reliable, but the adaptability to different pipe diameters is limited requiring frequent replacement
Solution Approach 1:
The patent applies the dynamics principle by making the tensioner pad structure movable and adjustable rather than fixed. The pad is divided into a central segment and two lateral segments that can independently translate along the pipe surface, allowing the pad to dynamically adapt to different pipe diameters. The spring devices enable automatic adjustment of segment positions based on the applied load and pipe geometry.
Solution Approach 2:
The patent applies segmentation by dividing the tensioner pad into multiple independent segments (central segment and two lateral segments) that can move relative to each other. This segmentation allows each part to independently adjust to the pipe curvature, improving adaptability while maintaining structural simplicity through modular design.
2Adaptability or versatility
If adjustable pads are used to accommodate different pipe diameters, then adaptability improves, but manual operator intervention is required making operation complex
Solution Approach 1:
The patent applies the self-service principle by designing an automatic adjustment mechanism where spring devices enable the pad segments to self-adjust to different pipe diameters without manual intervention. When the pad contacts the pipe, the springs automatically compress or extend to position the segments correctly, eliminating the need for operator adjustment while maintaining full adaptability.
3Adaptability or versatility
If frequent pad replacement is performed to accommodate varying pipe diameters, then adaptability is maintained, but time is lost reducing productivity
Solution Approach 1:
The dynamic adjustment capability allows the single pad to continuously adapt to different pipe diameters during operation, eliminating the need to stop and replace pads. The spring-loaded segments automatically reposition as the pipe diameter changes, maintaining productivity while providing full adaptability across the operating range.
4Extent of automation
If fixed tensioner pads are used, then the device complexity is low, but the extent of automation is limited requiring manual replacement
Solution Approach 1:
The self-service automatic adjustment mechanism uses simple spring devices that leverage the natural compression and extension of elastic elements. When load is applied, the springs automatically adjust the segment positions without requiring sensors, actuators, or control systems, achieving high automation with minimal structural complexity.
Solution Approach 2:
The patent applies parameter changes by utilizing the elastic properties of spring devices that change their compression state based on the applied load and pipe diameter. This passive parameter change enables automatic adjustment without complex control mechanisms, maintaining structural simplicity while achieving automation.
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
Enables the tensioner pad assembly to automatically adjust to a wide range of pipe diameters, reducing the need for frequent pad replacements and minimizing manual intervention, thus enhancing efficiency and ease of operation in offshore pipelaying.
Implementation Method 1
The adjustment device comprises a spring device associated to each of the central segment and first and second lateral segments
Data Source
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AI summary
The present invention relates to a tensioner pad assembly (230) for a track-type tensioner, comprising : - a mounting support (32) ; and - a tensioner pad (34), mobile relative to the mounting support, said tensioner pad comprising a contact surface (52) extending parallel to a first axis (X), said contact surface being able to get into contact with a pipe-like device. The tensioner pad comprises a central segment (40) and a first (42) and a second (44) lateral segments, each of said segments comprising a surface part of the contact surface of the tensioner pad, each of said central and lateral segments being translatable (236) relative to the mounting support along a translation axis (Z), perpendicular to the first and second axes.