Pressure Chamber Seal Chain for High-Pressure Aging Tests
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Solution Overview
Problem
Conventional high-pressure aging test apparatuses face issues with sealing effectiveness due to reliance on latches, which can lead to leakage or complex manual operations, and sealing tapes that increase operational difficulty.
Innovation Solution
A sealed pressure vessel with a seal chain and driving assembly that multi-directionally clamps the chamber door and body, using a seal chain tightened and loosened by a driving assembly for efficient sealing and opening, combined with a humidification system for controlled high-pressure, high-humidity environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a small number of latches are arranged, then the device complexity is reduced, but the sealing effectiveness deteriorates leading to leakage or chamber door burst
Solution Approach 1:
Multiple latches are merged into a single integrated seal chain structure that continuously engages with both the chamber body and chamber door along their peripheral surfaces, transforming discrete latch elements into a unified sealing system that provides continuous sealing without requiring multiple separate latch mechanisms
Solution Approach 2:
The seal chain is designed as a movable, flexible structure that can dynamically adapt to the peripheral surfaces of the chamber body and door, allowing the sealing elements to move and conform during the sealing process, thereby achieving reliable sealing with a single adjustable chain rather than multiple rigid latches
2Reliability
If a large number of latches are arranged, then the sealing effectiveness is improved, but the ease of operation deteriorates due to complex manual locking and unlocking operations
Solution Approach 1:
Multiple latch functions are merged into a single seal chain that can be engaged or disengaged as one unit, eliminating the need to manually operate multiple separate latches and significantly simplifying the sealing operation while maintaining continuous sealing along the chamber periphery
Solution Approach 2:
The seal chain serves multiple functions simultaneously: it provides continuous sealing along the chamber periphery, distributes sealing force uniformly, and can be operated as a single mechanism for both locking and unlocking, replacing the need for multiple specialized latch components
3Reliability
If a sealing tape with large volume is used, then the sealing effectiveness is improved, but the ease of operation deteriorates due to increased difficulty in latch locking process
Solution Approach 1:
The seal chain employs flexible sealing elements in the form of thin, compliant members that can deform and conform to the mating surfaces, providing effective sealing without requiring large volumes of material, and allowing easy engagement and disengagement during operation
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
Enhances sealing effectiveness, prevents leakage and explosion, reduces manual labor, and simplifies operations by automating the sealing process while maintaining precise control over test parameters.
Implementation Method 1
the driving assembly pulls the two ends of the seal chain to enable the seal chain to be wound around the first seal ring and the second seal ring and tightened, so that the plurality of clamping members clamp the first seal ring and the second seal ring in the grooves opened in the clamping members
Implementation Method 2
a humidification device provided in the box body and configured to supply water vapor to the pressure chamber to provide pressure and humidity
Data Source
AI summary
The invention provides a sealed pressure vessel including a box body, a pressure chamber and a humidification device. The pressure chamber includes a chamber body, a chamber door and a sealing mechanism. The sealing mechanism includes a first seal ring, a second seal ring, a seal chain and a driving assembly. A length of the seal chain is less than a circumference of the first seal ring. The seal chain includes a plurality of clamping members and first connecting members. Two ends of the first connecting member are rotatably connected to adjacent clamping members. A groove is opened on a side surface of the clamping member. A width of the groove opening is greater than a sum of thicknesses of the first and second seal ring, and a width of the groove bottom is less than the sum of the thicknesses of the first and second seal ring.