Transformer Accessory Tank Layout for Thermal Isolation
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Solution Overview
Problem
Static electric induction devices, such as transformers, experience overheating issues due to heat generation, which can degrade insulation materials and reduce the lifespan of accessories like bushings, and existing solutions do not effectively address the challenge of using temperature-sensitive accessories in high-temperature environments while minimizing weight and volume.
Innovation Solution
A static electric induction arrangement with a separate accessory tank connected via a fluid connection to the main tank, featuring a heat exchanger that circulates dielectric fluid, with the inlet located at or above the fluid connection's upper portion, preventing hot fluid from entering the accessory tank and using high-temperature dielectric fluids to maintain accessory temperature below its thermal limit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If accessories are placed directly in the main tank with hot dielectric fluid, then the static electric induction device can operate at high temperature, but the accessories will overheat and fail
Solution Approach 1:
The patent divides the tank system into two separate tanks: a main tank for the static electric induction device and an accessory tank for temperature-sensitive accessories. This segmentation allows each component to operate in its optimal temperature environment, resolving the contradiction between high-temperature operation and accessory reliability.
Solution Approach 2:
The patent extracts temperature-sensitive accessories from the hot environment of the main tank and places them in a separate accessory tank with cooler dielectric fluid. This extraction protects the accessories from overheating while allowing the main device to operate at high temperatures.
2Reliability
If a separate accessory tank is added to protect accessories from heat, then accessory reliability improves, but the device complexity increases
Solution Approach 1:
The accessory tank is positioned within or adjacent to the main tank structure, with the fluid connection integrated into the existing tank walls. This nested arrangement minimizes the increase in overall device complexity while achieving temperature separation.
Solution Approach 2:
The patent uses a fluid connection (hydraulic linkage) between the main tank and accessory tank to circulate dielectric fluid. This hydraulic approach provides automatic temperature regulation without complex mechanical control systems, reducing overall device complexity.
3Temperature
If the inlet of the heat exchanger is positioned low in the main tank, then hot fluid can be cooled effectively, but hot fluid will enter the accessory tank through the fluid connection
Solution Approach 1:
The patent positions the heat exchanger inlet at a higher vertical level in the main tank, creating a height difference that prevents hot fluid from reaching the fluid connection to the accessory tank. This dimensional approach uses gravity and hydrostatic pressure to control fluid flow paths.
Solution Approach 2:
The dielectric fluid is cooled in the heat exchanger before being returned to the main tank through the fluid connection to the accessory tank. This preliminary cooling action ensures that the fluid entering the accessory tank is already at a safe temperature, providing proactive temperature protection.
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 design allows for the use of temperature-sensitive accessories in high-temperature environments, reduces the risk of accessory failure, and achieves a more compact, lighter-weight static electric induction device by maintaining the accessory at a lower temperature, thus extending its lifespan and improving reliability.
Implementation Method 1
a heat exchanger connected to the static electric induction device tank, the static electric induction device tank comprises an outlet that is arranged to lead the dielectric fluid to the heat exchanger and an inlet that is arranged to return the dielectric fluid from the heat exchanger to the static electric induction device tank
Implementation Method 2
the static electric induction device tank and the accessory tank are connected via a fluid connection... an upper portion of a cross section of the fluid connection, as seen with respect to a vertical direction of the static electric induction arrangement, is located at a first height
Data Source
AI summary
Provided is a static electric induction arrangement including: a static electric induction device arranged in a static electric induction device tank; an accessory tank including at least one opening configured to receive an accessory therein; the static electric induction device tank and the accessory tank are intended to be filled with dielectric fluid and are connected via a fluid connection, an upper portion of a cross section of the fluid connection, is located at a first height, the arrangement comprises a heat exchanger connected to the device tank, the device tank includes an outlet that is arranged to lead the dielectric fluid to the heat exchanger and an inlet that is arranged to return the dielectric fluid from the heat exchanger.