Toothed Metallic Gasket Steps to Prevent Over-Compression Damage
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Solution Overview
Problem
Conventional toothed metallic gaskets are prone to damage and seal failure due to over-compression, lacking effective anti-crushing mechanisms, which leads to leakage and safety issues when loading forces fluctuate or exceed design limits.
Innovation Solution
A toothed metallic gasket with compression-resistant steps integrated between the metallic seal teeth, where the height of these steps is 30%-80% of the adjacent teeth, filled with nonmetallic sealing material, and designed with non-sharp contact corners to prevent damage and ensure even stress distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional toothed metallic gaskets are used with sharp-corner contact, then sealing function is achieved, but the sharp corners damage the flange sealing surface and the teeth are likely to be crushed and damaged
Solution Approach 1:
The gasket structure is segmented into three distinct height levels: seal teeth (highest), compression-resistant steps (intermediate height at 30%-80% of tooth height), and metallic framework (lowest). This segmentation allows each component to perform its specific function - the seal teeth provide sealing contact, the compression-resistant steps prevent over-compression damage, and the framework provides structural support.
Solution Approach 2:
The compression-resistant steps are designed as preventive cushioning elements that engage before the seal teeth can be over-compressed. These steps have non-sharp contact corners and intermediate height to distribute compression forces and prevent catastrophic failure of the seal teeth under excessive loading conditions.
2Manufacturing precision
If locating rings are added for radial and concentric locating, then positioning accuracy is improved, but the fixed locations cannot protect all teeth from over-compression
Solution Approach 1:
The compression-resistant steps are integrated throughout the gasket structure between all seal teeth, providing universal protection against over-compression. Unlike localized locating rings, these steps are distributed across the entire circumference, ensuring that every seal tooth has compression resistance protection regardless of its position.
3Strength
If compression-resistant mechanisms are made too high, then anti-crushing function is improved, but the resilience of the gasket is influenced
Solution Approach 1:
The height of the compression-resistant steps is optimized to be 30%-80% of the seal tooth height. This parameter range provides sufficient compression resistance to prevent tooth crushing while maintaining enough resilience in the seal teeth to ensure proper sealing contact. The non-sharp contact corners further distribute stresses to balance strength and resilience.
4Stability of the object's composition
If compression-resistant mechanisms are made too low, then resilience is maintained, but the anti-crushing function is insufficient
Solution Approach 1:
The compression-resistant steps are designed with height at 30%-80% of the seal tooth height, ensuring sufficient compression resistance. The intermediate height provides adequate structural support to prevent tooth crushing under excessive loads while allowing the seal teeth to maintain their elastic properties for effective sealing.
5Area of stationary object
If continuous toothed rings are processed on metallic framework, then sealing coverage is improved, but specific compression-resistant mechanisms are required to protect each tooth
Solution Approach 1:
The compression-resistant steps are merged with the seal tooth structure, forming an integrated unit where the steps are positioned between adjacent teeth at the same radial location. This combination provides continuous sealing coverage through the teeth while the integrated steps offer distributed compression protection without requiring separate independent mechanisms for each tooth.
Data Source
AI summary
A gasket includes a first face separated a predetermined distance from a second face, having a common though-hole. A metal frame is disposed between the first and the second faces, the metal frame supporting a first feature extending outwardly from opposing planar sides of the frame towards the first and the second faces, as well as supporting a second feature also extending outwardly from opposing planar sides of the frame towards the first and the second faces. The first feature is compressible when pressure is applied to the first and the second faces, and the second feature is incompressible when the pressure is applied to the first and the second faces. The first and the second features are continuous and concentrically aligned with one another about the through-hole, and the first feature is inclined towards the through-hole.