Self-aligning Plug for Transformer Winding Temperature Sensor
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Solution Overview
Problem
Existing methods for placing temperature probes within transformer coil windings are inefficient, as they often rely on gluing or adhering, which can be unreliable and may not accurately monitor temperature across the winding.
Innovation Solution
A self-aligning plug with elliptical end portions and a tapered body is used to securely position a temperature probe within a transformer winding, allowing for precise temperature measurement and easy insertion into ducts or passages, and is made from RTV silicone rubber for durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature probes are placed within transformer coil windings using gluing or adhering methods, then temperature monitoring is enabled, but the placement reliability and accuracy are compromised
Solution Approach 1:
The patent introduces a plug as an intermediary component that fits into ducts or passages within the transformer winding. This plug provides a stable mounting structure for the temperature probe, replacing the unreliable gluing method. The plug acts as a mediator between the probe and the winding structure, ensuring reliable mechanical support and accurate temperature monitoring without requiring adhesive materials.
Solution Approach 2:
The plug is designed to be self-aligning and self-positioning within the winding ducts. The tapered geometry of the plug allows it to automatically orient itself correctly during insertion, eliminating the need for complex alignment procedures or additional fastening operations. This self-service characteristic simplifies the manufacturing process while ensuring reliable probe placement.
2Ease of operation
If a tapered plug structure is used to facilitate easy insertion into transformer windings, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The plug employs a tapered geometry where the diameter gradually changes along the length of the plug. This parameter variation creates a self-aligning effect during insertion, guiding the plug into the correct orientation within the winding duct. The tapered shape transforms the insertion process from a precision-critical operation into a simple push-fit action, as the geometry itself provides alignment guidance.
Solution Approach 2:
The asymmetric tapered shape of the plug breaks the symmetry of a cylindrical form, creating a directional insertion characteristic. This asymmetry ensures that the plug can only be inserted in the correct orientation, providing self-aligning functionality. The asymmetric geometry simplifies operation by eliminating the need for precise manual alignment while maintaining manufacturing feasibility through standard machining processes.
Data Source
AI summary
A plug for ease of alignment of a temperature probe or sensor inside a duct of a transformer winding is provided. The plug is shaped for secure placement into a duct or passage of a transformer winding without requiring any adhering material. The insertion of the plug into the duct or passage brings the temperature probe into contact with the desired point along the transformer winding being thermally monitored.