Filling Nozzle Support Structure With Swivel Joint for Easier Removal
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Solution Overview
Problem
High-rigidity filling hoses in high-pressure gas filling devices, such as hydrogen dispensers for fuel cell vehicles, pose operational difficulties due to elastic rebound forces, making it challenging to remove the filling nozzle from the receptacle after filling.
Innovation Solution
A support structure featuring a swivel joint with orthogonal high-pressure gas flow paths in the filling hose connecting the filling nozzle and gas supply pipe, combined with a safety coupling and additional swivel joints, allows for relative rotation and absorption of elastic rebound forces, preventing nozzle detachment and improving operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a high-rigidity filling hose is used for high-pressure gas filling, then the hose can maintain structural integrity and pressure containment, but the elastic rebound force makes it difficult to remove the filling nozzle from the receptacle after filling
Solution Approach 1:
The patent introduces a swivel joint with orthogonal flow paths that enables dynamic rotation of the filling hose. This allows the hose to absorb elastic rebound forces through rotational movement rather than transmitting them directly to the nozzle connection, resolving the contradiction between maintaining structural integrity and enabling easy nozzle removal.
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 solution effectively reduces elastic rebound forces acting on the nozzle-receptacle connection, facilitating easier handling and operation by allowing the filling hose to rotate and absorb tension in multiple directions, thus enhancing the operational ease and preventing nozzle detachment.
Implementation Method 1
an elastic rebound force of the filling hose acts on the filling nozzle
Data Source
AI summary
To provide a support structure that can eliminate difficulty of operation due to rigidity of a filling hose and prevent difficulty in removing a filling nozzle from a receptacle after filling. A support structure (100) of the present invention includes a swivel joint (3: the first swivel joint) in a filling hose (2) that connects a filling nozzle (1) and a gas supply pipe of the dispenser (10) (for example, a hydrogen supply pipe), and the swivel joint (3) comprises a nozzle side member (3B) communicating with the filling nozzle (1) side, and a dispenser side member (3A) communicating with the dispenser (10) side, the nozzle side member and the dispenser side member are relatively rotatable, and a high-pressure gas flow path (3AR) formed in the nozzle side member and a high-pressure gas flow path (3BR) formed in the dispenser side member are orthogonal to each other.