Resilient Support Structure for Electromagnetic Flux Guide Thermal Expansion
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Solution Overview
Problem
Electromagnetic devices with ceramic insulators face mechanical and electrical breakdown due to thermal expansion mismatches between ceramic materials and ferromagnetic flux guides, especially in high-temperature and vibration-prone environments, leading to reduced mechanical compliance and limited application scope.
Innovation Solution
Incorporating an intermediate support structure with resiliently deformable members between the ferromagnetic flux guide and insulated electrical conductor, allowing for relative movement due to thermal expansion and providing mechanical shock resistance, which reduces stress and enhances durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If ceramic insulators are used to replace polymeric materials for high temperature operation, then temperature resistance is improved, but mechanical and electrical breakdown occurs due to thermal expansion mismatch
Solution Approach 1:
A flexible metallic sleeve is introduced as an intermediary component between the ceramic insulator and the ferromagnetic flux guide. This sleeve acts as a mediator that absorbs differential thermal expansion through its flexibility, preventing direct stress transmission to the ceramic insulator and thereby preventing mechanical and electrical breakdown while allowing the system to operate at high temperatures
2Temperature
If ceramic insulators are used in large machines, then temperature resistance is improved, but differential thermal expansion increases leading to mechanical breakdown
Solution Approach 1:
The flexible metallic sleeve changes its physical parameters (dimensions, shape) in response to thermal expansion differences. By allowing the sleeve to deform elastically, the system accommodates the increased differential thermal expansion in large machines without causing mechanical breakdown of the ceramic insulator
3Temperature
If ceramic insulators are used in vibration-prone environments, then temperature resistance is improved, but mechanical and electrical degradation occurs over time
Solution Approach 1:
The flexible metallic sleeve provides beforehand cushioning by absorbing and dampening vibration forces before they can be transmitted to the ceramic insulator. This protective action prevents mechanical and electrical degradation that would otherwise occur over time in vibration-prone environments, while maintaining high temperature resistance
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 effectively reduces mechanical and electrical breakdown, prolongs device lifetime, and improves mechanical shock resistance, enabling operation in harsh environments with reduced risk of failure.
Implementation Method 1
an intermediate support structure positioned between the ferromagnetic flux guide and insulated electrical conductor which includes at least one resiliently deformable member arranged to allow relative movement between the ferromagnetic flux guide and the insulated electrical conductor, in which the relative movement is due to thermal expansion or contraction
Implementation Method 2
The resiliently deformable members can take up varying degrees of differential thermal expansion between adjacent insulated electrical conductors and ferromagnetic flux guides in an electromagnetic device
Implementation Method 3
The intermediate support structure may also provide a degree of mechanical shock resistance for the adjacent parts when exposed to high levels of vibration
Data Source
AI summary
An electromagnetic device, which includes a ferromagnetic flux guide; an insulated electrical conductor positioned adjacent to the ferromagnetic flux guide; and, an intermediate support structure positioned between the ferromagnetic flux guide and conductor which includes at least one resiliently deformable member arranged to allow relative movement between the ferromagnetic flux guide and the insulated electrical conductor, in which the relative movement is due to thermal expansion or contraction of the ferromagnetic flux guide and insulated electrical conductor.