Pipe Connection Contact Surface for Reliable Adhesive Sealing
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Solution Overview
Problem
The existing methods for renovating connecting components on main pipes, such as those in sewer systems, face challenges in achieving optimal surface adhesion and sealing due to difficult preparation conditions, especially under remote control and with years of grease and dirt deposits, leading to incomplete bonding and leakage issues.
Innovation Solution
The connecting components are pre-manufactured with enhanced surface features like undercuts, ribs, and protective elements to improve adhesion, using materials like PVC that are inherently more bondable, and incorporating removable contamination protection for optimal sealing and bonding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional connecting components with smooth surfaces are used, then manufacturing is simpler, but adhesion of sealing materials is insufficient leading to leakage
Solution Approach 1:
The connecting component is pre-manufactured with an optimized contact surface featuring a specific profile structure (including a recess and protrusion) that enhances adhesion. This preliminary preparation eliminates the need for extensive on-site surface treatment, allowing sealing material to be applied directly and achieve reliable bonding without complex preparation steps.
2Reliability
If extensive surface preparation is performed on site, then adhesion quality improves, but renovation time and complexity increase
Solution Approach 1:
The contact surface with its optimized profile structure is prepared in advance during manufacturing. This shifts the adhesion optimization from the renovation phase to the production phase, enabling quick on-site installation while maintaining high sealing quality. The pre-structured surface allows immediate application of sealing material without time-consuming preparation work.
3Strength
If material removal is performed to clean surfaces, then adhesion improves, but risk of wall damage increases
Solution Approach 1:
The optimized contact surface profile is created during manufacturing before the component is installed in the pipe. This eliminates the need for on-site material removal operations that could damage pipe walls. The adhesion enhancement is achieved through the pre-formed geometric structure rather than aggressive surface cleaning.
Solution Approach 2:
The connecting component features a localized optimized contact surface with specific profile characteristics (recess and protrusion) only in the bonding area. This local optimization provides enhanced adhesion where needed without requiring modification of the entire component or aggressive treatment that could cause damage.
4Reliability
If simple smooth surfaces are used, then manufacturing is easier, but sealing performance deteriorates under remote control conditions
Solution Approach 1:
The connecting component has a differentiated surface structure: the contact surface features an optimized profile with recess and protrusion for enhanced sealing, while the rest of the component maintains a simple smooth surface. This localized complexity provides improved sealing performance without significantly increasing overall manufacturing complexity.
Data Source
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AI summary
In the case of a connecting component (4) which is designed as a pipe or has a pipe section and which is intended to be connected to a main pipe, wherein the connecting component (4) has an area which is intended to enable the connecting component (4) to be bonded to the main pipe and/or to be sealed against the main pipe and to come into contact with an adhesive or sealing material, the invention proposes that this area of the connecting component (4) is designed by the manufacturer in such a way as to improve the adhesion of an adhesive or sealing material used for repair.