Reinforced Composite Pipe Adapter Joint for Higher Pressure
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Solution Overview
Problem
Current methods for joining non-metallic pipes, such as composite plastic pipes, are often unsuccessful due to the interference of layered materials and can result in weak points when adapters are added, leading to potential pipe system failures.
Innovation Solution
The method involves wrapping non-metallic pipes with reinforcement materials like pre-impregnated fiberglass or carbon fiber, heating them to bond the material to the pipe, and then attaching an adapter to create a stronger joint that can withstand higher pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical compression fittings (swage fittings) are used to join composite pipe, then the pipe can be successfully joined, but internal stresses are created in the pipe which can cause premature failures
Solution Approach 1:
The reinforcement material is applied to the pipe end before the adapter is installed. This preliminary reinforcement strengthens the pipe wall at the critical location where the adapter will be mounted, preventing stress concentration and premature failure during the adaptation process and throughout the system's operation.
2Adaptability or versatility
If adapters are added to unreinforced pipe, then the pipe can be connected to metallic pipe, but weak points are created around the adapter which lower the working pressure of the pipe system
Solution Approach 1:
Reinforcement material is applied locally to the specific area of the pipe where the adapter will be installed, rather than reinforcing the entire pipe. This localized reinforcement strengthens the critical zone around the adapter while maintaining the original pipe properties elsewhere, enabling safe connection to metallic pipe without compromising overall system strength.
3Ease of manufacture
If butt fusion is used to join plastic pipes, then the joining method is cost-effective and simple, but composite pipes with layered material cannot be successfully fused due to interference with fusion of the heated ends
Solution Approach 1:
Reinforcement material serves as an intermediary between the composite pipe and the adapter. This material layer provides a suitable bonding surface that enables reliable connection, bridging the incompatibility between the layered composite structure and the adapter, thereby allowing connection methods that would otherwise fail on composite pipes.
4Strength
If reinforcement material is wrapped around the pipe end before adapter installation, then the pipe strength is enhanced at the adapter contact area, but additional processing steps and materials are required
Solution Approach 1:
The reinforcement material is applied to the pipe end in advance, before the adapter installation process begins. This preliminary preparation ensures the pipe is properly strengthened at the critical location, and the reinforcement is integrated into the overall adaptation process rather than being a separate, complex addition.
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 enhances the strength of the pipe joint, reduces the risk of failure, and provides a cost-effective solution for connecting non-metallic pipes to metallic pipes without the internal stresses caused by mechanical fittings.
Implementation Method 1
The reinforcement material may include a heat activated resin and the material may be heated after it has been wrapped around the pipe
Implementation Method 2
heating causes the reinforcement material to bond to the pipe
Data Source
AI summary
A method of joining a non-metallic pipe to a metallic pipe. The pipe may be wrapped with one or more sheets of reinforcement material (e.g., pre-impregnated fiberglass, carbon fiber, or aramid fiber) and then fitted with an adapter or fitting that is connectable to a metallic pipe. The reinforcement material may be heated using a heating apparatus which allows the material to bond to the pipe to strengthen the joint.