Transformer Insulating Plate Layout for Oil Flow Path Assembly
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Solution Overview
Problem
Conventional stationary induction apparatuses require complex and labor-intensive arrangement of insulating pieces to form a flow path for insulating oil between windings, complicating the assembly process.
Innovation Solution
A stationary induction apparatus design featuring a core with coaxially arranged windings, insulating plates with strategically positioned holes and notches that form a flow path orthogonal to the winding axis, allowing insulating oil to flow efficiently without the need for multiple insulating pieces on the plate surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple insulating pieces are arranged on the insulating plate to form a flow path, then the insulating oil flow path can be formed between windings, but the assembly work becomes complicated and labor-intensive
Solution Approach 1:
The patent merges multiple separate insulating pieces into a single integrated insulating plate with pre-formed flow path holes. The insulating plate includes a body portion and multiple flow path holes that are formed as integral structures, eliminating the need to arrange and assemble multiple separate insulating pieces between windings. This significantly reduces assembly complexity while maintaining the insulating oil flow path formation capability.
Solution Approach 2:
The insulating plate is segmented into functional regions including the body portion and multiple flow path holes positioned at specific locations. The flow path holes are segmented into first holes in the first insulating plate and second holes in the second insulating plate, which together form the complete insulating oil flow path. This segmentation allows for simplified manufacturing of individual plates while achieving complex flow path functionality through their arrangement.
2Reliability
If insulating pieces are affixed one by one to form flow path, then proper insulation and cooling are achieved, but the manufacturing process becomes time-consuming
Solution Approach 1:
The flow path holes are preliminarily formed in the insulating plates during the plate manufacturing process itself, rather than requiring subsequent assembly operations. The insulating plates are prepared in advance with the correct hole positions and dimensions, so that when the plates are installed between windings, the flow path is automatically formed without requiring additional assembly steps. This preliminary action significantly improves productivity.
3Device complexity
If a flat insulating plate is used without additional components, then the structure is simple, but the insulating oil flow path cannot be effectively formed between windings
Solution Approach 1:
The insulating plate is designed with multiple flow path holes that create a porous-like structure through which insulating oil can flow. The plate maintains its solid, non-porous material properties for insulation purposes, but the intentional holes create flow channels. This allows the simple flat plate structure to effectively form the required flow path while maintaining structural simplicity and manufacturing ease.
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
Simplifies the formation of the insulating oil flow path between windings, reducing assembly complexity and enhancing the efficient cooling of windings by allowing insulating oil to flow in a linear or mesh-like pattern, thereby 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. 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 and returns to the tank.
Implementation Method 2
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 3
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 and returns to the tank.
Data Source
AI summary
A first plate-like portion is provided with a plurality of first holes extending therethrough in a central axis direction. A second plate-like portion is provided with a plurality of second holes extending therethrough in the central axis direction. The plurality of first holes, the plurality of second holes, a first notch and a second notch overlap one another, to thereby form a flow path which connects one side and the other side of each of a plurality of insulating plates and through which insulating oil can flow in a first direction.