Air Core Reactor Winding Mount With Filament Roving Reinforcement
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Solution Overview
Problem
Existing air core reactor mounting arrangements are structurally limited by mechanical stresses such as bending, which can occur during operation due to events like short circuits, seismic activity, or extreme temperatures, leading to deformations and reduced reliability.
Innovation Solution
A mounting plate with a ramped surface is coupled to the spider arm, surrounded by filament roving that develops hoop tension to restrain bending, enhancing the flexural strength of the mounting arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional mounting arrangement is used for the winding package, then the structure is simple and easy to manufacture, but the bending strength and reliability are reduced under mechanical stresses such as short circuits or seismic activity
Solution Approach 1:
The mounting arrangement uses a composite structure combining a mounting plate with a ramped surface and filament roving wrapped around it. The filament roving (typically fiberglass or similar composite material) wraps around the ramped surface to create a composite mounting arrangement that resists bending forces. This composite construction provides enhanced bending strength while maintaining reasonable structural complexity.
Solution Approach 2:
The mounting plate features a ramped surface with a specific curvature or angled geometry. The filament roving wraps around this curved/ramped surface, and the geometric shape itself contributes to the structural integrity. The curved ramped surface helps distribute stresses and works with the wrapped filaments to resist bending moments applied to the spider arm.
2Strength
If the spider arm is made more robust to resist bending, then the bending strength improves, but the weight of the mounting arrangement increases
Solution Approach 1:
Instead of simply making the spider arm or mounting plate thicker and heavier, the invention uses a composite construction with filament roving wrapped around the ramped surface. This composite approach provides high bending strength-to-weight ratio, as the filament materials (such as fiberglass) offer excellent strength without adding significant weight compared to solid metal reinforcement.
Solution Approach 2:
The reinforcement is applied locally where needed - the filament roving is wrapped specifically around the ramped surface of the mounting plate at the location where bending forces are most critical. This localized reinforcement provides the necessary bending strength without unnecessarily increasing the weight of the entire mounting arrangement or spider arm.
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 solution effectively improves the bending strength of air core reactor mounting arrangements, providing reliable structural support during operational stresses by leveraging the hoop tensile properties of the filament roving.
Implementation Method 1
the filament roving that surrounds the ramped surface develops a hoop tension effective to restrain the bending of the spider arm
Data Source
AI summary
An improved structural arrangement for mounting winding packages in the air core reactor is provided. Disclosed embodiments make use of structural properties, such as hoop tensile properties, of a filament roving 130 that may be arranged to surround structural features (e.g., inclined surfaces 108) formed in a disclosed mounting plate 110.