Flat-Plate Vacuum Seal Gasket With Positioning Wires
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Solution Overview
Problem
Existing high-vacuum and ultra-high-vacuum seal gaskets face challenges in maintaining alignment and preventing air leakage when the mounting plane of flat-plate workpieces is inclined or vertical, as traditional methods require structural changes or are not suitable for large sizes and misalignment can lead to leakage.
Innovation Solution
A seal gasket comprising a seal ring with outwardly extending metal wires, evenly distributed along its circumference, which can be welded and made from materials like gold, silver, or copper, allowing for accurate positioning and secure sealing without structural modifications, suitable for any angle and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thin metal wire seal gasket is used to seal between flat-plate workpieces, then sealing can be achieved through squeezing and deforming the metal wire, but the gasket cannot be fixed in proper position when the mounting plane is inclined or vertical, leading to misalignment and air leakage
Solution Approach 1:
The seal gasket is segmented into a seal ring body and multiple extending metal wires. The metal wires act as separate positioning elements that can be inserted into mounting holes, while the seal ring provides the sealing function. This segmentation allows the positioning and sealing functions to be independently optimized.
Solution Approach 2:
The extending metal wires serve as intermediary elements that connect the seal gasket to the mounting structure. By inserting these wires into mounting holes, the seal gasket is securely positioned and prevented from slipping or misaligning, especially on inclined or vertical mounting planes.
2Reliability
If stepped concave and convex structures are processed on flat-plate workpieces to accommodate the seal gasket, then ultra-high-vacuum sealing can be achieved on inclined surfaces, but the manufacturing processes and cost increase
Solution Approach 1:
Instead of modifying the workpiece structure, the sealing function is segmented into a separate gasket component with integrated positioning wires. This eliminates the need for complex concave-convex structures on the workpieces themselves, simplifying manufacturing while maintaining sealing reliability.
Solution Approach 2:
The positioning function is moved from the workpiece surface (2D plane) to the mounting holes (3D depth dimension). By inserting wires into holes, positioning is achieved in three dimensions, providing more stable fixation without requiring complex surface structures.
3Area of stationary object
If the seal gasket size is increased for large-size applications, then larger sealing areas can be covered, but the gasket cannot maintain its shape by itself using its own support force, making it impossible to mount
Solution Approach 1:
The gasket is divided into a rigid seal ring providing structural support and multiple extending metal wires providing positioning and additional support. This segmentation allows large-size gaskets to maintain shape stability through the distributed support of multiple wire elements.
Solution Approach 2:
The seal gasket uses composite construction combining a seal ring and metal wires, potentially of different materials optimized for their specific functions. The seal ring provides structural integrity for large sizes, while the metal wires provide positioning and supplemental support.
Data Source
AI summary
The present disclosure relates to a sealing technology, and in particular relates to a high-vacuum or ultrahigh-vacuum seal gasket (301) for a flat plate structure and a sealing structure. The seal gasket (301) comprises a seal ring (302) and multiple metal wires (303) extending outwards from the seal ring (302). The flat plate sealing structure comprises two flat plates (401, 404), the seal gasket (301) is fixed to one flat plate (401) via the multiple extending metal wires (303) so as to accurately position the seal ring (302). Accurate positioning can be achieved by virtue of an extern force without structure improvement on flat plate workpieces, thereby ensuring that no malposition occurs after the installation of the seal gasket (301).