High-Pressure Conduit Coupling Structure to Prevent Hose Separation
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Solution Overview
Problem
High-pressure fluid delivery systems face risks of failure, leading to health and property damage, and existing solutions require replacement of the entire system when a single component fails, which is economically inefficient.
Innovation Solution
A safety conduit system with a coupling design featuring an elongate housing with barbed and toothed ends, including a thread for secure engagement, and a stainless steel-reinforced thermoplastic hose, allowing for interchangeable components and enhanced pressure resistance up to 40,000 psi.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hose and coupling systems are used, then the system can deliver high-pressure fluids, but the entire system must be replaced when any component fails
Solution Approach 1:
The coupling is divided into distinct modular components: a reusable housing with barbed and toothed ends, and replaceable ferrules that can be independently replaced. This segmentation allows only the failed ferrule to be replaced rather than the entire coupling assembly, reducing replacement costs while maintaining system reliability.
2Strength
If the coupling uses simple barb connections, then the structure is simple, but the conduit separates at high pressures
Solution Approach 1:
The coupling employs a composite connection structure combining barbs for initial insertion and mechanical engagement, teeth for enhanced gripping and pressure distribution, and threaded ferrules for secure fastening. This composite approach distributes stress across multiple features, enabling the coupling to withstand high pressures (up to 40,000 psi) while maintaining a manageable structural complexity.
3Strength
If the coupling is designed for high pressure resistance, then it can withstand 40,000 psi, but the manufacturing complexity increases
Solution Approach 1:
The barbs are pre-formed on the housing during manufacturing, creating ready-to-engage features that simplify assembly. The ferrules are pre-threaded with complementary threads, allowing for straightforward screw-on attachment. These preliminary actions during manufacturing reduce assembly complexity and enable high-pressure performance without proportionally increasing manufacturing difficulty.
Data Source
AI summary
Safety conduit system includes a pair of couplings, each including an elongate fitting or housing having barbs at one end and spaced apart teeth at an opposite end. A conduit made of a thermoplastic hose, and stainless steel reinforcement around the hose is attached at each end to the barbed end of a respective coupling. A thread is optionally provided on an outer surface of the housing inward of the barbs so that ferrules on the conduit and having inner threads can threadingly engage with the threads on the couplings and enable the safety conduit system to maintain connection between the conduit and couplings at relatively high fluid flow pressure through the safety conduit system, such as around 40,000 psi.