Segmented Pipe Coupling for Flanged-to-Plain Polymer Pipe Sealing
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Solution Overview
Problem
Existing methods for joining non-flanged polymer pipe elements to flanged pipe elements require multiple parts, a fusing operation, and a fusing machine, which are cumbersome and weather-dependent, especially under low-pressure applications.
Innovation Solution
A coupling system comprising segments with adjustable attachment members, a split ring, and a resilient seal, allowing pre-assembled connection of non-flanged polymer pipes to flanged pipes without fusing, using fasteners to draw segments together for a fluid-tight joint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a butt flange adapter and backing ring are used to join non-flanged polymer pipe to flanged pipe, then a fluid-tight connection is achieved, but the number of parts and assembly complexity increases
Solution Approach 1:
The patent combines the butt flange adapter and backing ring into a single integrated coupling body that includes both the flange interface and the pipe receiving chamber in one monolithic structure, eliminating the need for separate parts while maintaining the fluid-tight connection function
Solution Approach 2:
The coupling body serves multiple functions simultaneously: it provides the flange interface for connection to flanged pipes, creates a sealed chamber for receiving non-flanged polymer pipes, and integrates the sealing mechanism all in one component, reducing part count while maintaining connection reliability
2Strength
If a fusing operation is used to join the butt flange adapter to the non-flanged polymer pipe, then a permanent connection is achieved, but the installation time and equipment requirements increase
Solution Approach 1:
The patent replaces the thermal fusing process with a mechanical insertion system where the non-flanged polymer pipe is simply inserted into the receiving chamber and secured by the resilient seal and clamp mechanism, eliminating the need for heating equipment and reducing installation time while maintaining connection integrity
Solution Approach 2:
The resilient seal automatically engages with the inserted pipe and the clamp mechanism self-adjusts to secure the pipe in place without requiring external power sources or complex joining operations, enabling quick installation while maintaining strong connection
3Strength
If a fusing machine with power source is used for the joining operation, then the butt flange adapter is securely attached, but the portability and ease of field installation decrease
Solution Approach 1:
The patent replaces the power-dependent fusing machine with a manual mechanical insertion and clamping system that can be operated without external power sources, making the installation process portable and suitable for field conditions while maintaining secure attachment through the integrated clamp and seal mechanism
4Reliability
If the fusing process is performed in cold weather conditions, then the connection is still achieved, but the fusing time increases or the process stops entirely
Solution Approach 1:
The patent replaces the thermally-dependent fusing process with a mechanical insertion and clamping system that is not sensitive to ambient temperature conditions, allowing installation to proceed reliably in cold weather without process interruption or extended timing while maintaining connection reliability through the resilient seal and mechanical clamp
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
Reduces the number of parts and eliminates the need for a fusing machine, simplifying installation and ensuring a fluid-tight connection regardless of weather conditions.
Implementation Method 1
a resilient seal positioned in a second channel. The seal engages the tube
Data Source
AI summary
A coupling for joining a flanged pipe element to a non-flanged pipe element has segments that are connected end to end and surround a central space. Flange portions extend from one side of the segments. Each segment defines two channels, one of which receives a split ring for gripping the non-flanged pipe; the other channel receives a seal. A flanged tube is also positioned between the segments. The flange of the tube is positioned adjacent to the flange portions of the segments. The seal engages the tube and the non-flanged pipe element. The flange portions of the segments are bolted to the flange of the flanged pipe element and the flange of the tube is captured between the flanged portions of the segments and the flange of the flanged pipe element.