Pipe Relining Liner Arrangement for Tight Bend Navigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liner arrangements struggle to navigate through narrow bends in pipe structures, such as boundary traps, due to their rigid design and inability to conform to tight radii, leading to installation challenges and potential damage to the existing pipe.
Innovation Solution
A liner arrangement featuring a flexible inserting hose with a partitioning system and fastening means that allows the liner part to bend and conform to the pipe's shape, with a minimum outside bend radius not exceeding the smallest inside bend radius, enabling smooth passage through narrow bends without hard edges or clamps, and utilizing a curable composition for enhanced flexibility and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid liner arrangement is used, then structural strength and stability are improved, but the ability to navigate narrow bends is worsened
Solution Approach 1:
The liner arrangement is divided into multiple segments or sections that can flex relative to each other, allowing the overall structure to bend while maintaining local structural integrity. The partitioning system creates discrete sections that can accommodate curvature changes in the pipe.
Solution Approach 2:
The liner arrangement transitions from a static rigid structure to a dynamic flexible system that can adapt its shape. The inserting hose and partitioning system allow the liner to dynamically conform to the pipe's geometry, including narrow bends, while maintaining structural support when inflated.
2Adaptability or versatility
If a flexible inserting hose is used, then the ability to bend and navigate narrow bends is improved, but structural strength and stability are worsened
Solution Approach 1:
The liner arrangement is inserted in a deflated or flexible state through the narrow bends first, then inflated to its structural form once positioned. This preliminary flexible insertion followed by structural expansion allows the system to navigate bends while maintaining strength during operation.
Solution Approach 2:
The liner utilizes a flexible shell structure that can bend during insertion but provides structural support when inflated. The thin film or hose material allows deformation during insertion while the inflated state creates the necessary structural integrity for the relining function.
3Stability of the object's composition
If hard edges or clamps are used for fastening, then structural stability is improved, but the risk of scratching or tearing the existing pipe is worsened
Solution Approach 1:
The fastening system uses flexible elements such as the inserting hose and partitioning structure instead of hard edges or rigid clamps. These flexible components can conform to the pipe surface without creating stress concentrations that would scratch or tear the existing pipe, while still providing adequate stabilization.
Solution Approach 2:
The inserting hose and partitioning system act as intermediary elements between the liner arrangement and the existing pipe. These intermediaries provide the necessary fastening and stabilization functions while protecting the pipe surface from direct contact with hard fastening elements.
4Ease of operation
If the liner arrangement is made highly flexible, then ease of insertion through narrow bends is improved, but manufacturing precision and control during insertion are worsened
Solution Approach 1:
The partitioning of the liner into segments provides natural control points and structural definition that aid in precise insertion and positioning. Each segment can be controlled independently while maintaining overall flexibility, improving both ease of insertion and manufacturing precision.
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 allows for successful installation of the liner arrangement through previously inaccessible pipe constellations, reducing the risk of damage and enabling efficient relining without scratching or tearing the existing pipe, while providing sufficient space for inspection and reducing infrastructure and work requirements.
Implementation Method 1
utilizing a curable composition for enhanced flexibility and sealing
Data Source
AI summary
This relates to a liner arrangement for inserting in a pipe structure, the liner arrangement includes one liner part, inserting tool including inserting hose and units for deflation and inflation, and a fastener, wherein the one liner part has a length and is adapted to cooperate with the unit for deflation and inflation, wherein a partitioning of the one liner part encloses a part, of the inserting hose, and the partitioning has a length, wherein a fraction of the enclosing partitioning, together with the fastener, enable fastening of the one liner part to the inserting hose during insertion of the liner arrangement, and the liner arrangement has ability to bend and thereby demonstrating a minimum outside bend radius not greater than about the smallest inside bend radius of the pipe structure; and method for relining a pipe structure.