Lining Element for Pipe Repair Using Segmented Flexible Parts
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Solution Overview
Problem
The existing methods for manufacturing lining elements for repairing connections between main and branch pipes are complex, particularly due to the requirement of creating a radial seam, which involves sewing along a circular path.
Innovation Solution
The use of flexible, expandable lining parts connected by multiple connections, such as seams or adhesive bonds, to form a lining element that can be easily configured and joined, allowing for a simpler geometric shape and assembly process, including the option of using a resin-absorbing material like fibrous or non-woven materials and forming techniques like heat deformation to achieve the desired shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the branch pipe section and main pipe section are connected by an annular seam, then the lining element can be manufactured, but the manufacturing process becomes very complex and requires sewing along a circular path
Solution Approach 1:
The lining element is divided into multiple straight lining parts (first, second, third lining parts) that can be manufactured separately and then connected. Each lining part has straight edges that are easier to manufacture and connect than a continuous circular seam, transforming the complex annular seam problem into simpler linear connections between segments
Solution Approach 2:
The invention transitions from a two-dimensional circular seam approach to a three-dimensional assembly of multiple flat lining parts that form the annular structure when assembled. This allows the use of straight edges and simpler connection methods while achieving the same functional result
2Ease of manufacture
If multiple lining parts are connected by seams or adhesive bonds, then the assembly process is simplified, but the structural integrity and sealing performance may be compromised
Solution Approach 1:
The invention combines multiple connection methods (seams and adhesive bonds) to create a hybrid connection system that leverages the mechanical strength of seams and the sealing capability of adhesives, achieving both ease of assembly and reliable structural integrity
Solution Approach 2:
The connection system uses composite approaches combining different joining technologies (sewing/adhesive bonding) to achieve properties that neither method alone could provide, ensuring both structural strength and sealing performance while maintaining assembly simplicity
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
This approach simplifies the configuration and assembly of lining elements, making it easier to create the desired geometric shape and connect individual parts, thereby reducing the complexity of the manufacturing process and improving the efficiency of pipe repairs.
Implementation Method 1
the lining element is provided with an adhesive glue for durable bonding with the interior of the tube wall, wherein, in particular, a hardenable resin is used. Preferably, the lining element comprises a layer of resin-absorbing material
Implementation Method 2
After the resin has hardened, the lining element is in positive and frictional engagement with the inner tube wall
Data Source
AI summary
A lining element for repairing a connection area between a main pipe and a branch pipe, comprising a layer of resin-absorbing material, wherein at least three flexible, expandable lining parts are connected to each other by at least three connections to form the lining element. Each lining part comprises a main pipe section and a branch pipe section, and side edges. The lining element is characterized in that the lining parts are connected to each other by connecting both side edges of the adjacent branch pipe sections and side edges of adjacent main pipe sections in a continuous fashion.