C-Ring Gasket Sealing Structure for High-Temperature Vacuum Flanges
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Solution Overview
Problem
Existing gasket designs fail to provide effective sealing in high-temperature environments and vacuum conditions, with limited adjustability and susceptibility to abrasion, leading to reduced durability and sealing efficiency.
Innovation Solution
A gasket with a C-ring or O-ring-shaped sealing device made of resilient materials, featuring a C-ring portion that can stretch or contract, and a spring portion for enhanced sealing, along with anti-abrasion layers and cut portions to prevent galvanic corrosion, ensuring effective sealing in high-temperature environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If O-ring members are simply inserted into grooves for sealing, then the structure is simple, but the sealing effect is not high and there is no adjustability for different leaking fluids
Solution Approach 1:
The sealing member incorporates a spring portion that provides elastic force, enabling the sealing member to dynamically adjust and maintain contact pressure against the groove surface. This dynamic mechanism ensures reliable sealing across varying conditions without requiring complex multi-component structures
Solution Approach 2:
The sealing member's cross-sectional shape is designed to change under compression, transforming from a relaxed state to a compressed state that maximizes contact with the groove walls. This parameter change enables adaptive sealing that responds to different fluid pressures and leakage scenarios
2Temperature
If insulating materials are used in the gasket structure, then electrical insulation is provided, but sealing cannot be achieved in high-temperature environments where the insulating material melts
Solution Approach 1:
The gasket structure employs different materials for different functional zones: metal layers provide high-temperature structural stability and sealing contact, while insulating material layers provide electrical insulation where temperature exposure is lower. This localized material assignment allows the gasket to simultaneously achieve high-temperature resistance and electrical insulation
Solution Approach 2:
The gasket is constructed as a composite structure with alternating metal and insulating material layers, combining the thermal stability of metals with the electrical insulation properties of non-metallic materials. This composite approach resolves the contradiction between temperature resistance and insulation capability
3Reliability
If metallic sealing devices are used, then sealing effectiveness is improved, but galvanic corrosion occurs between metal components
Solution Approach 1:
An insulating material layer is positioned between dissimilar metal components (such as between the metal sealing member and metal flange), acting as an intermediary that prevents direct galvanic contact while allowing the metallic sealing devices to maintain their high sealing effectiveness
Solution Approach 2:
The insulating material is strategically placed only at specific contact points where galvanic corrosion would occur between metal components, rather than throughout the entire structure. This localized insulation prevents corrosion while preserving the metallic sealing surfaces' effectiveness
4Reliability
If the gasket structure is designed for vacuum and high-pressure sealing, then sealing reliability is improved, but the structure becomes complex with multiple layers and grooves
Solution Approach 1:
The gasket is divided into multiple functional layers (metal layers, insulating material layers) and multiple groove systems at different positions. Each segment performs a specific sealing function, and the segmented structure enables the gasket to handle both vacuum and high-pressure conditions effectively
Solution Approach 2:
Multiple groove systems are nested within the gasket structure at different depths and positions, with sealing members positioned in each groove. This nested arrangement creates multiple sealing barriers that work together to prevent leakage under extreme pressure differentials
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 provides improved sealing efficiency, increased durability, and reduced abrasion, maintaining effective sealing even under high-temperature and vacuum conditions while preventing galvanic corrosion.
Implementation Method 1
a C-ring portion, which opens in an inner direction, at an inner end of the sealing device (61), wherein the C-ring portion is formed of a resilient material that can be stretched out or contracted
Implementation Method 2
a spring portion for enhanced sealing
Implementation Method 3
anti-abrasion layers and cut portions to prevent galvanic corrosion
Implementation Method 4
cut portions to prevent galvanic corrosion
Data Source
AI summary
A gasket is disposed between pipe flanges to prevent leakage.