Insulation Plate Heat Containment in Encapsulated Transformers
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Solution Overview
Problem
Conventional encapsulated transformers rely on excessive potting material to maintain temperature conditions, leading to increased size and cost, which is inefficient.
Innovation Solution
Incorporating insulation plates made of materials like press-board, epoxy resin, bamboo, or ceramic within the transformer housing, either embedded in or abutting the potting material, to contain heat and reduce the need for additional potting compound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the amount of potting material is increased to achieve desired temperature gradient, then temperature control is improved, but cost and size of the transformer increase
Solution Approach 1:
The patent divides the potting material into two distinct segments: a first potting material with higher thermal conductivity placed near the core and coil assembly for efficient heat dissipation, and a second potting material with lower thermal conductivity used for the remaining encapsulation. This segmentation allows optimized thermal management with reduced overall material quantity, thereby controlling transformer size while maintaining effective temperature gradient control.
Solution Approach 2:
The patent applies local quality by using different potting materials with specific thermal conductivity properties at different locations within the transformer. The first potting material with higher thermal conductivity is strategically placed where heat generation is highest (near core and coils), while the second material is used elsewhere. This localized optimization enables effective temperature control with minimal material usage, reducing both size and cost.
2Temperature
If the amount of potting material is increased to achieve desired temperature gradient, then temperature control is improved, but manufacturing cost increases
Solution Approach 1:
The patent segments the potting material application into two stages or zones: first applying a smaller amount of high thermal conductivity material precisely where needed for heat dissipation, then completing the encapsulation with lower conductivity material. This segmented approach reduces the total quantity of expensive potting material required, thereby lowering manufacturing cost while maintaining effective temperature control.
Solution Approach 2:
The patent implements local quality by concentrating high-performance thermal material only in critical heat zones rather than uniformly throughout the entire transformer. This targeted application optimizes thermal management effectiveness while minimizing material consumption and associated manufacturing costs.
3Temperature
If conventional encapsulated transformers use standard potting material arrangement, then structural simplicity is maintained, but temperature control efficiency is insufficient
Solution Approach 1:
The patent introduces segmentation into the potting material arrangement by dividing it into two functional zones with different thermal conductivity characteristics. This segmentation enhances temperature control efficiency by directing heat flow more effectively, while the segmented structure can be integrated into the existing transformer manufacturing process, limiting the increase in device complexity.
Solution Approach 2:
The patent applies local quality by modifying the thermal properties of potting material at specific locations (near core and coils) rather than changing the entire system. This localized modification improves temperature control efficiency with minimal changes to the overall device structure and manufacturing process.
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
This arrangement maintains desired temperature conditions while reducing the amount of potting material used, resulting in a more cost-effective and compact transformer design.
Implementation Method 1
the insulating plate is either partially or wholly embedded in the potting material or abuts the potting material, so as to contain the heat emanating from the transformer core and coil assembly
Data Source
AI summary
The present disclosure envisages an arrangement for maintaining desired temperature conditions on and within a transformer housing of an encapsulated transformer. The arrangement comprises at least one insulation plate disposed proximal to a transformer core and coil assembly of the encapsulated transformer such that the insulating element is in surface contact with a potting compound of the encapsulated transformer and adapted to substantially contain the heat emanating from the transformer core and coil assembly, thereby maintaining desired temperature conditions on and within the transformer housing.