Two-Section Isostatic Interference-Fit Joint for Cylinder Assembly
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Solution Overview
Problem
Existing methods for manufacturing composite cylinders using isostatic pressure require tubular chambers for assembly, which are cumbersome and inefficient, particularly for applications like high-pressure pasteurization and hydrogen storage.
Innovation Solution
An assembly chamber with two sections, S1 and S2, is used to assemble composite cylinders without the need for tubular chambers, where a cylinder is initially placed in section S1 and expands into section S2 under pressure, facilitated by a vertical positioning and internal mechanism, allowing easy disassembly and reassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tubular chamber is used for assembly, then interference joining can be achieved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The assembly chamber is divided into two separate sections: a first section for receiving the inner cylinder and a second section for receiving the outer cylinder. This segmentation eliminates the need for a complex tubular chamber while maintaining the interference joining capability through sequential assembly operations.
Solution Approach 2:
The invention extracts the assembly function from a single complex tubular chamber and distributes it across two simpler sections. The first section handles inner cylinder assembly, and the second section handles outer cylinder assembly, thereby simplifying the overall device structure.
2Ease of repair
If the assembly chamber is disassembled after use, then the cylinder can be recovered, but the manufacturing precision and structural integrity may be compromised
Solution Approach 1:
The first and second sections are pre-assembled with a joining mechanism that ensures precise alignment and secure connection before the actual cylinder assembly process. This preliminary structuring allows for easy disassembly and reassembly while maintaining structural integrity and manufacturing precision throughout multiple cycles.
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
Facilitates efficient assembly and disassembly of composite cylinders, reducing stress and complexity, suitable for high-pressure applications such as HPP and hydrogen storage.
Implementation Method 1
a new assembly chamber, which does not make it necessary to provide tubular chambers for assembly. It is an assembly chamber built from two consecutive sections, S1 of larger diameter and S2 of smaller internal diameter
Implementation Method 2
One possibility is that it is placed in a vertical position with S1 at the top; so that when the diameter of section S2 increases, it is displaced by the weight.
Data Source
Figure 10~30
AI summary
The present invention relates to a novel isostatic interference-fit joint wherein the assembly chamber has two diameters, having a section S1 and another narrower section S2, which forms part of the cylinder made up of several cylinders with interference-fit joints. The cylinder has two diameters since the chamber must be loaded with a cylinder that fits in the section S1 and does not fit in the narrower section S2. Then, once the assembly chamber is closed and the pressure is increased, the diameter of the assembly chamber increases, particularly the section S2, and the composite chamber enters, being assembled with the section S2, once the pressure is extracted. In order to facilitate the assembly, it is better for the assembly chamber to operate vertically, with the section S1 at the top and the composite cylinder falls under its own weight inside the section S2 when the pressure increases. It is subsequently disassembled and the result is the composite cylinder with one more cylinder, joined by interference and another section S2 must be included in the assembly chamber for reuse.