Vacuum-Infused Hose Coupling Bonding for High-Pressure Reinforced Hoses
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Solution Overview
Problem
Existing high-pressure rubber hoses in industries like mining, construction, energy, and petrochemicals face issues with unreliable bonds between the hose and couplings due to weak epoxy and voids in the epoxy, leading to potential failure under high pressure and frequent stress, risking damage and safety hazards.
Innovation Solution
A method involving skiving the hose ends to expose reinforcing layers, using vacuum-assisted epoxy infusion to fill voids and strengthen the bond, combined with carbon-fiber reinforcement to enhance the mechanical properties of the bond between the hose and coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional epoxy bonding is used to attach hose coupling to reinforced hose, then the bonding process is simple, but the bond strength is insufficient and voids form in the epoxy under high pressure
Solution Approach 1:
The patent changes the physical state and application parameters of the epoxy bonding agent by introducing it in a liquid state under vacuum conditions, allowing it to penetrate deeply into the reinforcing layers and then curing it to form a strong, void-free bond that maintains reliability under high pressure
Solution Approach 2:
The patent creates a composite bonding structure by combining epoxy resin with the exposed reinforcing layers of the hose, forming an integrated bond that leverages both the adhesive properties of the epoxy and the mechanical strength of the reinforcing layers
2Reliability
If vacuum-assisted epoxy infusion is used to fill voids and strengthen the bond, then the bond reliability improves, but the manufacturing process complexity increases
Solution Approach 1:
The patent employs vacuum pressure differential to draw the liquid epoxy bonding agent into the reinforcing layers and ensure complete void elimination, using pneumatic principles to achieve reliable bonding without requiring overly complex manufacturing equipment
Solution Approach 2:
The patent performs preliminary skiving of the hose end to expose the reinforcing layers before epoxy application, and applies vacuum before epoxy introduction to ensure the bonding agent penetrates fully and cures without voids, preventing bond failure before it occurs
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 method significantly improves the shear strength and grip between the hose and coupling, reducing the risk of failure and ensuring a reliable bond under high pressure and frequent stress, enhancing safety and performance.
Implementation Method 1
introducing a vacuum into the inner cavity through a vent port in the hose coupling; the bonding agent is drawn by the vacuum into the plurality of reinforcing layers of the reinforced hose
Data Source
AI summary
One aspect of the disclosure is a method of attaching a hose coupling to a reinforced hose. In one embodiment, the method comprises: skiving the first end of the reinforced hose to expose at least one reinforcing layer of a plurality of reinforcing layers of the reinforced hose; positioning the skived first end of the reinforced hose in an inner cavity of the hose coupling; introducing a vacuum into the inner cavity through a vent port in the hose coupling; and introducing a bonding agent into the cavity through an injection port in the hose coupling, wherein the bonding agent is drawn by the vacuum into the plurality of reinforcing layers of the reinforced hose.