Thermo-Reversible Gel Insulation for Power Device Leak Containment
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Solution Overview
Problem
Liquid-filled power devices, such as transformers and semiconductor switching devices, are susceptible to leakage due to corrosion or faulty welds, leading to environmental contamination, increased maintenance costs, and system weight, necessitating a solution that prevents leakage and facilitates easy cleanup.
Innovation Solution
A power device using an insulation composition comprising ester oil and a polymer that undergoes a thermo-reversible oil-to-gel transition, allowing it to remain liquid during operation and gel upon cooling, effectively sealing leaks and preventing environmental contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If metallic oil reservoirs are equipped to host the full amount of insulating liquid upon leakage, then environmental damage is minimized, but weight and cost of the system increase
Solution Approach 1:
The patent applies parameter changes by modifying the physical state of the insulation composition through temperature-dependent gelation. The composition transitions from liquid to gel state based on temperature, allowing it to remain liquid during operation for proper insulation and cooling, but gel upon leakage to prevent environmental damage. This eliminates the need for heavy metallic reservoirs while maintaining environmental protection.
Solution Approach 2:
The patent uses composite materials by combining base oil with gelating agents to create an insulation composition that exhibits both liquid and gel properties. This composite formulation enables the dual functionality of being fluid during operation for heat dissipation and forming a gel barrier upon leakage, replacing the need for additional containment structures.
2Object-affected harmful factors
If metallic oil reservoirs are equipped to host the full amount of insulating liquid upon leakage, then environmental damage is minimized, but cost of the system increases
Solution Approach 1:
The patent applies parameter changes by modifying the physical state of the insulation composition through temperature-dependent gelation. The composition transitions from liquid to gel state based on temperature, allowing it to remain liquid during operation for proper insulation and cooling, but gel upon leakage to prevent environmental damage. This eliminates the need for heavy metallic reservoirs while maintaining environmental protection.
Solution Approach 2:
The patent uses composite materials by combining base oil with gelating agents to create an insulation composition that exhibits both liquid and gel properties. This composite formulation enables the dual functionality of being fluid during operation for heat dissipation and forming a gel barrier upon leakage, replacing the need for additional containment structures.
3Use of energy by moving object
If the insulation composition is in liquid phase during operation, then heat dissipation is effective, but leakage causes environmental contamination
Solution Approach 1:
The patent applies parameter changes by modifying the physical state of the insulation composition through temperature-dependent gelation. The composition transitions from liquid to gel state based on temperature, allowing it to remain liquid during operation for proper insulation and cooling, but gel upon leakage to prevent environmental damage. This eliminates the need for heavy metallic reservoirs while maintaining environmental protection.
Solution Approach 2:
The patent utilizes phase transitions by designing the insulation composition to undergo reversible gelation at specific temperatures. During normal operation above the gelation temperature, the composition remains liquid for effective heat dissipation. Upon leakage and cooling below the gelation temperature, it transitions to a gel state that prevents environmental contamination, providing a self-containing mechanism.
4Reliability
If the insulation composition undergoes thermo-reversible oil-to-gel transition, then leakage is sealed, but device complexity increases
Solution Approach 1:
The patent applies self-service by designing the insulation composition to automatically gel upon leakage without requiring external intervention. The temperature-dependent gelation mechanism enables the composition to self-contain itself when leaked, sealing leaks and preventing environmental damage autonomously, eliminating the need for complex active containment systems.
Solution Approach 2:
The patent utilizes phase transitions by designing the insulation composition to undergo reversible gelation at specific temperatures. During normal operation above the gelation temperature, the composition remains liquid for effective heat dissipation. Upon leakage and cooling below the gelation temperature, it transitions to a gel state that prevents environmental contamination, providing a self-containing mechanism.
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 thermo-reversible gelation of the insulation composition prevents environmental damage by containing spills on surfaces, reducing maintenance costs, and enabling self-healing or self-sealing of small leaks, thus minimizing downtime and weight, while maintaining effective heat dissipation during operation.
Implementation Method 1
the insulation composition is configured to undergo a thermo-reversible oil-to-gel transition below a predefined temperature
Implementation Method 2
an insulation composition, which is in thermal contact with the element
Implementation Method 3
dissipating heat via the insulation composition
Data Source
Figure 1~2
Figure 3~4d
AI summary
An electrical power device is provided, which comprises an element producing heat during operation; and an enclosure holding an insulation composition, which is in thermal contact with the element, wherein the insulation composition comprises: an ester oil, and a polymer. Further, a method of treating a leak in a power device having an enclosure holding such an insulation composition is provided.