Pressurized Fluid Tank Base Design for Liner Assembly Control
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Solution Overview
Problem
Existing pressurized fluid tanks face issues with liner slippage and assembly control due to mechanical stresses and friction between the liner, base, and reinforcing shell, leading to potential fluid leakage and cracking.
Innovation Solution
A tank design featuring a base with a 'T' shape, where the first portion forms a longitudinal passage and the second portion is integrally positioned within the liner, along with a clamping ring to secure the liner between the base and reinforcing shell, enhancing assembly control and mechanical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base is positioned with the opening hidden by the second portion, then assembly control becomes difficult, but the structural integrity may be improved
Solution Approach 1:
The patent inverts the conventional positioning by making the opening visible and accessible from the outside, rather than hiding it. The base is designed with the opening positioned such that it can be easily accessed for assembly and control operations, while the second portion extends to provide structural support. This inversion resolves the contradiction by making assembly control easy while maintaining structural integrity through the extended second portion.
2Reliability
If the liner is glued or overmoulded under the base, then the assembly becomes more secure, but the manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-positioning the base with the opening exposed before the liner is formed. The base is prepared in advance with the correct positioning and opening location, allowing the liner to be subsequently formed and secured without complex manufacturing steps. This preliminary preparation simplifies the overall manufacturing process while ensuring secure assembly.
3Device complexity
If the base and liner are in direct contact, then the assembly is simpler, but mechanical stresses and friction cause fluid leakage
Solution Approach 1:
The patent introduces an intermediary element (the second portion of the base) that acts as a mediator between the liner and the reinforcing shell. This intermediary structure distributes mechanical stresses and reduces direct friction between the liner and other components, preventing fluid leakage while maintaining assembly simplicity. The second portion serves as a stress-transfer element that protects the liner from direct contact stresses.
Data Source
AI summary
This method for fixing a base with at least one element of a liner (24) of a tank (22) for a pressurised fluid comprising a liner (24) in particular comprises forming at least one element of the liner (24) by rotational moulding or by extrusion blow moulding of a polymer on the walls of a mould, the polymer being heated so as to be malleable, and in particular cooling the polymer so as to secure the second portion (40) of the base (34) to the polymer.