Bonded Pipe Joint Using Rotation Welding for Leak Resistance
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Solution Overview
Problem
Existing pipe devices lack high sealing capabilities and are unable to withstand high tensile and torsional forces, often requiring expensive tools to enhance connection strength and prevent leaks.
Innovation Solution
A pipe device with a cohesive connection between the pipe and connecting element, utilizing materials like PA 666, PPA, and PA 12, where the pipe and connecting element form a strong bond through melting and hardening, often via rotation welding, to create a durable, leak-resistant, and easy-to-handle connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a simple push-on connection with retaining lugs is used, then the device complexity is low and ease of manufacture is high, but the connection strength is insufficient and leakage occurs
Solution Approach 1:
The patent replaces the mechanical retention system (retaining lugs and clamps) with a thermal bonding system. The connecting element and pipe are bonded together through heating and cooling, creating a unified structure that eliminates the need for separate retention mechanisms while achieving superior connection strength and leak prevention.
Solution Approach 2:
The patent utilizes temperature parameter changes to achieve bonding. By heating the connecting element and pipe to specific temperatures and then allowing them to cool, the materials transition from a moldable state to a bonded state, creating a strong permanent connection without complex mechanical structures.
2Reliability
If clamps and additional sealing means are added to increase tightness and strength, then the sealing and tensile strength improve, but the device complexity increases and manufacturing costs rise
Solution Approach 1:
The patent merges the functions of connection, retention, and sealing into a single bonding process. The thermal bonding creates a unified structure where the connecting element and pipe become integral parts of each other, eliminating the need for separate clamps, retaining lugs, and sealing components while achieving superior reliability in all three aspects.
Solution Approach 2:
The patent replaces mechanical sealing and retention systems with a thermal bonding system. Instead of using multiple mechanical components (clamps, seals, retaining lugs), the invention uses controlled heating and cooling to create a permanent bond that simultaneously provides structural strength and sealing, reducing the total component count while improving reliability.
3Strength
If a cohesive connection through melting and hardening is implemented, then the tensile and torsional strength increase significantly, but the manufacturing process complexity increases
Solution Approach 1:
The patent utilizes temperature parameter changes to achieve bonding. By heating the connecting element and pipe to specific temperatures and then allowing them to cool, the materials transition from a moldable state to a bonded state, creating a strong permanent connection without complex mechanical structures.
Solution Approach 2:
The patent replaces the mechanical retention system (retaining lugs and clamps) with a thermal bonding system. The connecting element and pipe are bonded together through heating and cooling, creating a unified structure that eliminates the need for separate retention mechanisms while achieving superior connection strength and leak prevention.
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 achieves high tensile and torsional strength with low leakage rates, eliminating the need for additional sealing means and reducing manufacturing costs, while being easy to assemble and aesthetically pleasing.
Implementation Method 1
a cohesive connection is formed between the first material and the second material, in particular a joint connection, and in particular directly between the first material and the second material
Implementation Method 2
the first material and the second material can be the same or different. For example, PA 666, PA 66, PPA and PA 12 are suitable as the first material
Implementation Method 3
utilizing materials like PA 666, PPA, and PA 12, where the pipe and connecting element form a strong bond through melting and hardening, often via rotation welding
Data Source
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AI summary
The invention relates to a pipe device (1) comprising a pipe (10) and a connection element (20). The pipe (10) has a pipe jacket (11) that has an inner surface (12) and an outer surface (13) and forms a flow channel (14). The connection element (20) forms a through-channel (21) that extends from a connection piece (22) consisting of a first material (M1) and having a first opening (23) to a second opening (24). The pipe jacket (11) is positioned on the connection piece (22) with a first pipe end (15) consisting of a second material (M2). A bonded connection is formed between the first material (M1) and the second material (M2) in a contact region between the inner surface (12) of the pipe jacket (11) and a peripheral surface (25) of the connection piece (22).