Pressure Vessel Jacket Support for Delamination Control
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Solution Overview
Problem
Existing pressure vessels, particularly composite ones, face challenges in achieving high structural strength and reliable impermeability due to potential relative movements between plastic jackets, which can lead to delamination and compromised sealing, especially in long-term operation.
Innovation Solution
A pressure vessel design featuring a first and second jacket with a collar part, a stiffening ring, and a support body with a contact surface adapted to the curved shape of the inner jacket, along with a sealing arrangement in the annular gap between the fixing body and the collar part, ensures secure absorption of forces and prevents deformation, using a pressing device with an external thread to generate a tensile force that secures the support body against axial movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a composite pressure vessel with plastic jackets and fiber reinforcement is used, then weight reduction and corrosion resistance are improved, but relative movements between jackets can occur leading to delamination and reduced structural strength
Solution Approach 1:
A support body is introduced as an intermediary element between the first and second jackets. This support body prevents relative movements between the jackets by providing mechanical support and distributing loads, thereby preventing delamination while maintaining the lightweight composite structure.
Solution Approach 2:
The pressure vessel uses a composite structure combining plastic jackets with fiber reinforcement (glass fiber, carbon fiber, or aramid fiber). This composite material approach provides both weight reduction and enhanced structural strength, while the support body ensures the layers remain bonded under operational loads.
2Ease of operation
If the collar part and fixing body are designed for connection devices, then ease of operation and connection are improved, but structural strength in this area may be compromised due to stress concentrations
Solution Approach 1:
The support body is specifically positioned at the collar part where connection devices are mounted. This localized reinforcement provides additional structural strength precisely where stress concentrations occur during connection and operation, without affecting other areas of the vessel.
Solution Approach 2:
The support body is pre-installed within the collar part before the fixing body is attached. This preliminary placement ensures that the reinforcement is already in position to handle stress concentrations that will occur during subsequent connection operations and long-term use.
3Reliability
If a pressing device with external thread is used to secure the support body, then reliability of force absorption is improved, but device complexity increases
Solution Approach 1:
The pressing device utilizes the existing external thread on the fixing body to generate the pressing force. The thread structure itself serves the dual purpose of both connection and securing the support body, eliminating the need for separate fastening mechanisms and reducing overall device complexity.
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 design enhances structural strength and maintains pressure-tightness by preventing relative movements and deformations, ensuring reliable sealing and improved structural integrity, even in long-term operation.
Implementation Method 1
a pressing device with an external thread for a nut to generate an outwardly acting screw force
Implementation Method 2
which can be pressed against the casing by a pressing device
Implementation Method 3
a sealing arrangement is arranged in the annular gap
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a pressure vessel for receiving at least one fluid medium, and comprising a first shell (1) and a second shell (3) that at least partially encompasses said first shell (1), the first shell (1) having, at least at one of its ends, a collar portion (5) which comprises a securing element (15) that forms an opening (13) for supplying and discharging the medium. The vessel is characterised in that a support element (19), which is in the form of a split ring and surrounds said opening (13), is provided inside the container and has a contact surface (39) adapted to the curved shape of the first shell (1) inner side which is attached to the collar portion (5), said contact surface being able to be pressed onto the first shell (1) using a pressing device (43, 45).