CPVC Pipe Coupling Module for Shock-Resistant Leak Prevention
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Solution Overview
Problem
The existing water distribution systems for fire suppression face issues with flexible PVC pipes deforming under external shocks, leading to cracks and water leakage due to the mismatch in strength between PVC pipes and metal nipples used for coupling.
Innovation Solution
A pipe coupling module using chlorinated polyvinyl chloride (CPVC) components, including a pipe branch section, a pipe connection socket, and a pipe joint unit, joined by solvent cement, which eliminates the need for metal nipples by providing a reliable and secure connection between distribution and flexible pipes through stepped surfaces and rubber rings for compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal nipples are used to couple PVC pipes, then connection between distribution pipe and flexible pipe is achieved, but the PVC pipe deforms under external shock causing cracks and water leakage
Solution Approach 1:
The patent applies homogeneity by using CPVC material for both the pipe branch section and pipe connection socket, ensuring uniform material properties throughout the coupling system. This eliminates the strength mismatch between different materials (PVC and metal nipple) that caused deformation and cracking in the prior art.
Solution Approach 2:
The patent uses chlorinated polyvinyl chloride (CPVC), which is a composite material with enhanced properties compared to standard PVC. CPVC provides higher strength and better impact resistance while maintaining compatibility with solvent cement joining, resolving the contradiction between connection reliability and pipe strength.
2Reliability
If metal nipples are used for coupling, then connection is achieved, but cracks occur in the pipe leading to water leakage
Solution Approach 1:
The patent changes the material parameter from standard PVC to chlorinated polyvinyl chloride (CPVC), which has superior impact resistance and strength properties. This parameter change enables the pipe to withstand external shocks without cracking, thereby preventing water leakage while maintaining connection reliability.
3Ease of manufacture
If solvent cement is used to join CPVC components, then easy and reliable connection is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the pipe branch section and pipe connection socket into a directly joined assembly using solvent cement. This combining of components with a simple joining process achieves reliable connection without introducing complex coupling mechanisms, fittings, or additional assembly steps.
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 CPVC-based coupling module prevents pipe deformation and cracking, ensuring reliable plumbing connections without metal nipples, thus enhancing the durability and leak-resistance of the water distribution system.
Implementation Method 1
the pipe branch section and the pipe connection socket are formed of chlorinated polyvinyl chloride (CPVC), and are joined by means of a solvent cement
Data Source
AI summary
Disclosed is a pipe coupling module for coupling a distribution pipe and a flexible pipe in a water distribution system. The pipe coupling module includes a pipe branch section diverging from the distribution pipe, a pipe connection socket coupled directly to the pipe branch section, and a pipe joint unit coupling the flexible pipe, wherein the pipe branch section and the pipe connection socket are formed of chlorinated polyvinyl chloride (CPVC), and are joined by means of a solvent cement.