Pressure Vessel Wire Fixing via Low-Temp Soldering
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Solution Overview
Problem
Pressure vessels for storing hydrogen face thermal damage during manufacturing due to high-temperature welding, leading to potential gas leaks and wire breakage, and existing reinforcement methods fail to provide sufficient tension and stability for the metal wire.
Innovation Solution
A pressure vessel design featuring a cylindrical steel body with a metal wire wound on its surface, where both ends of the wire are soldered to the body or flange using a low-melting-point solder to minimize thermal stress and prevent wire damage, with a flange structure that supports the wire and prevents sliding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal wire is welded to the pressure vessel body to fix it, then the wire is securely fixed to the body, but thermal damage occurs to the pressure vessel due to high-temperature welding
Solution Approach 1:
A flange is introduced as an intermediary component between the pressure vessel body and the metal wire. The flange is coupled to the body and provides a separate fixation point for the wire, preventing direct welding to the body and thus avoiding thermal damage while maintaining secure wire fixation
Solution Approach 2:
The fixation system is segmented into two distinct parts: the flange coupled to the pressure vessel body and the wire fixed to the flange. This segmentation separates the thermal process from the pressure vessel body, allowing the wire to be fixed securely without exposing the body to high-temperature welding
2Object-affected harmful factors
If metal wire is fixed to the pressure vessel body with tape to prevent thermal damage, then thermal damage is prevented, but sufficient tension cannot be provided in the initial winding process
Solution Approach 1:
The flange acts as an intermediary that enables both thermal damage prevention and sufficient wire tension. By coupling the flange to the body and fixing the wire to the flange, the system achieves secure fixation with adequate tension without direct welding to the body
Solution Approach 2:
The flange is pre-coupled to the pressure vessel body before the wire winding process begins. This preliminary action ensures that the wire can be fixed with sufficient tension from the initial winding stage, eliminating the need for tape while preventing thermal damage
3Shape
If fine metal wire is used to reduce gaps between winds, then gaps are minimized, but the wire often breaks due to damage during work process
Solution Approach 1:
The flange serves as a protective intermediary that supports the wire at critical fixation points. This support structure prevents the fine wire from breaking during the work process while maintaining the tight winding configuration
Solution Approach 2:
The flange provides beforehand support and protection for the fine metal wire at the fixation points. This prior cushioning prevents wire breakage during subsequent handling and operation, ensuring the wire maintains its integrity despite being ultra-fine
4Strength
If wire is wound around the pressure vessel to reinforce it, then structural strength is improved, but the wire slides and lacks stable support
Solution Approach 1:
The flange acts as a mediator that provides stable support for the wound wire. By coupling the flange to the body and fixing the wire to the flange, the wire position is stabilized, preventing sliding while maintaining the reinforcement effect
Solution Approach 2:
The flange is pre-installed on the pressure vessel body to provide stable support structures before wire winding. This preliminary preparation ensures the wire maintains its position without sliding during and after the winding process
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 prevents thermal damage, ensures stable wire winding, and reduces the risk of gas leaks by minimizing thermal stress and providing sufficient tension, thus enhancing the structural integrity and longevity of the pressure vessel.
Implementation Method 1
the wire for strengthening the body is fixed to the body or a flange of the pressure vessel by soldering
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
Disclosed is a pressure vessel for storing gas. The pressure vessel for storing gas includes a body provided with a hollow portion and configured in a cylindrical shape having a constant thickness along an axial direction thereof; a pair of caps provided with respective injection holes formed through the caps along the axial direction, having threads on an outer circumferential surface thereof, and engaging to both ends of the body to close the body tightly; a flange coupled to each end of the body, the flange having a central opening; and a metal wire wound on an outer surface of the body to strengthen the body. In addition, one end of the wire is fixed on the outer surface of the body by soldering and an opposite end of the wire is fixed on the wire wound on the body by soldering.