High Voltage Insulator Elastic Ring for Adhesive Bonding
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Solution Overview
Problem
High-voltage insulators face challenges in withstanding long-term mechanical and thermal stress, particularly due to transverse contraction which introduces strong mechanical forces into adhesive connections, leading to peeling and splitting forces.
Innovation Solution
Incorporating an elastically deformable ring body in the connecting sleeve or bolt of the high-voltage insulator, which reduces tensile and compressive forces acting on the adhesive layers, thereby suppressing peeling and splitting forces, and using a temperature-resistant adhesive like epoxy to ensure a secure bond.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid connecting sleeve or bolt is used to fix the holder to the insulating body, then the mechanical strength of the connection is improved, but transverse contraction forces cause peeling and splitting of the adhesive layer
Solution Approach 1:
The connecting sleeve or bolt is designed with an elastically deformable ring body that can change its dimensional parameters (cross-sectional area, wall thickness) to accommodate thermal expansion and contraction of the insulating body. This parameter change allows the rigid connection to adapt to thermal stresses without causing adhesive failure, resolving the contradiction between mechanical strength and long-term reliability under thermal stress.
2Stability of the object's composition
If the insulating body is firmly constrained by the holder, then mechanical stability is improved, but thermal expansion and contraction generate harmful peeling forces in the adhesive layer
Solution Approach 1:
The connecting sleeve or bolt incorporates an elastically deformable ring body that can dynamically adjust its dimensions in response to thermal stresses. This dynamic capability allows the connection to maintain mechanical stability while accommodating thermal expansion and contraction, preventing the generation of harmful peeling forces in the adhesive layer.
3Device complexity
If a simple adhesive connection is used between the holder and insulating body, then the device complexity is reduced, but the connection cannot withstand long-term mechanical and thermal stress
Solution Approach 1:
The connecting sleeve or bolt combines rigid materials (for mechanical strength) with elastically deformable ring bodies (for thermal stress accommodation). This composite structure integrates materials with different mechanical properties to create a connection that can withstand both mechanical loads and thermal stresses, significantly improving long-term reliability without substantially increasing 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 solution enables the high-voltage insulator to maintain good long-term behavior under high mechanical and thermal loads by reducing undesirable forces, preventing peeling and splitting, and ensuring the adhesive layers remain intact.
Implementation Method 1
a ring body that is elastically deformable when the insulating body contracts transversely is arranged in one end of a connecting sleeve or a connecting bolt of a holder fixed to an insulating body
Implementation Method 2
One of the two brackets is attached to the insulating body with a layer of adhesive
Data Source
Figure 1
Figure 2~4
AI summary
The high voltage insulator has an insulator body (1) and has two mountings (3,4), which are mounted on an insulator body by forming an electrical insulating section (A). Annular bodies (12,2) are arranged in an end of a connecting sleeve (10) or connecting bolts (20) facing the insulating section. The annular bodies are elastically deformed by transverse contraction of the insulating body. The annular body is connected with the insulating body by end sections (111,211) facing the insulating section.