Insulating Plate Flow Path Layout for Transformer Oil Cooling
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Solution Overview
Problem
Conventional stationary induction apparatuses require complex arrangements of insulating pieces to form a flow path for insulating oil between windings, making the process cumbersome.
Innovation Solution
The solution involves disposing adjacent first and second plate-like portions on insulating plates to create a flow path for insulating oil, eliminating the need for multiple insulating pieces and simplifying the arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple insulating pieces are arranged one by one on the insulating plate to form a flow path, then the flow path for insulating oil can be formed, but the work of affixing the insulating pieces becomes complicated
Solution Approach 1:
The patent merges multiple separate insulating pieces into a single integrated insulating plate with a built-in flow path. The insulating plate includes a through-hole that forms the flow path, eliminating the need to affix multiple separate insulating pieces. This integration maintains the flow path formation function while significantly simplifying the assembly process.
2Productivity
If multiple insulating pieces are arranged to form a flow path, then oil circulation can be achieved, but the assembly process becomes time-consuming
Solution Approach 1:
The flow path structure is pre-formed as an integrated part of the insulating plate during manufacturing. The through-hole is created in advance as part of the insulating plate fabrication process, so that during assembly, the insulating plate is simply placed as a complete unit rather than requiring step-by-step assembly of multiple pieces. This preliminary formation of the flow path structure significantly reduces assembly time.
3Temperature
If insulating oil flows between multiple insulating pieces, then cooling of windings can occur, but the arrangement of insulating pieces becomes cumbersome
Solution Approach 1:
The patent combines multiple insulating pieces with their associated flow path structures into a single integrated insulating plate. The through-hole in the insulating plate provides the flow path for insulating oil, allowing cooling of windings to occur efficiently while eliminating the cumbersome arrangement and affixing of multiple separate insulating pieces.
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 approach allows for a straightforward formation of the flow path between windings, enhancing the efficiency of oil circulation and cooling of the windings, thereby simplifying the assembly process and improving cooling efficiency.
Implementation Method 1
The insulating oil enters between the high-voltage winding and the low-voltage winding via one ends of the windings, and is heated by receiving heat of these windings while passing between them
Implementation Method 2
The insulating oil is delivered to the outside via the other ends of the windings, into an oil cooler by an oil pump through a pipe, and is then cooled by a blower
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A first plate-like portion (130a) is provided with a plurality of first holes (131a) extending therethrough in a central axis direction. A second plate-like portion (130b) is provided with a plurality of second holes (131b) extending therethrough in the central axis direction. The plurality of first holes (131a), the plurality of second holes (131b), a first notch (132a, 132b) and a second notch (133a, 133b) overlap one another, to thereby form a flow path (10) which connects one side and the other side of each of a plurality of insulating plates (130) and through which insulating oil can flow in a first direction (D1).