Isolation Transformer Segmented Resin Case for X-Ray Systems
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Solution Overview
Problem
Existing high-voltage isolation transformers used in X-ray generating apparatuses face challenges in size reduction and breakdown voltage enhancement when filled with insulating liquid, as gas bubbles trapped in the resin case reduce breakdown voltages and reliability.
Innovation Solution
An isolation transformer design featuring an annular core, coils, and a container with a specific opening for insulating liquid flow, combined with a partition structure to prevent bubble trapping, increasing breakdown voltage and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a resin case is used to cover the core and coils in the isolation transformer, then the breakdown voltage of the core and resin case is increased, but gas bubbles are trapped in the resin case during insulating liquid filling, resulting in reduced breakdown voltage and reliability
Solution Approach 1:
The resin case is divided into multiple segments (first resin case segment and second resin case segment) that are assembled together. This segmentation creates assembly gaps that allow insulating liquid to penetrate and displace gas bubbles during filling, while the segments are connected through connecting portions to form a complete protective enclosure around the core and coils.
Solution Approach 2:
The resin case segments are pre-assembled with connecting portions that include channels or gaps before the insulating liquid filling process. This preliminary configuration ensures that when insulating liquid is introduced, it can automatically flow through the connecting portions and eliminate trapped gas bubbles without requiring additional degassing steps.
2Volume of stationary object
If the isolation transformer is reduced in size using a toroidal core, then the X-ray generating apparatus size is reduced, but the breakdown voltage may be compromised when gas bubbles are trapped
Solution Approach 1:
The resin case is segmented into multiple parts that can be assembled around the compact toroidal core. The connecting portions between segments provide pathways for insulating liquid to reach all areas, ensuring that the compact design does not compromise breakdown voltage by eliminating gas bubble traps that would otherwise be present in a fully enclosed single-piece design.
Solution Approach 2:
The connecting portions of the resin case segments act as intermediaries that facilitate the interaction between the insulating liquid and the internal components. These connecting portions serve as channels that guide the insulating liquid to displace gas bubbles from critical areas around the toroidal core and coils, maintaining high breakdown voltage in the compact structure.
3Reliability
If gas bubbles are trapped in the resin case during insulating liquid filling, then the electric field is concentrated on the gas bubbles, but the segmented resin case structure with connecting portions prevents bubble trapping
Solution Approach 1:
By dividing the resin case into segments with connecting portions, the structure creates continuous pathways for insulating liquid to flow through and displace gas bubbles. This prevents the formation of gas bubble pockets that would concentrate electric fields, thereby eliminating the harmful effect on electron gun driving reliability.
Solution Approach 2:
The connecting portions between resin case segments, which could be seen as structural weaknesses, are actually beneficial as they provide channels for insulating liquid penetration. This converts the potential harm of gas bubble trapping into a benefit by enabling automatic bubble elimination during the filling process, improving overall reliability.
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 achieves a higher breakdown voltage and reduced size, enhancing the reliability of X-ray generating apparatuses and radiography systems by ensuring effective filling of insulating liquid without bubbles, thus improving the apparatus's operational stability.
Implementation Method 1
the first container having a first opening through which the insulating liquid flows
Implementation Method 2
an isolation transformer configured to transform a voltage of a drive signal from a power source located outside of the X-ray generating apparatus into a cathode potential reference
Implementation Method 3
An insulating liquid is generally filled into the X-ray generating apparatus in order to ensure an internal breakdown voltage
Data Source
AI summary
Both the size reduction and the increase in breakdown voltage of a high-voltage isolation transformer are realized, which is to be used in an insulating liquid in an X-ray generating apparatus. In the isolation transformer, an annular core and a primary coil wound around the annular core are housed in a first container, and a secondary coil is wound around the first container. A first opening through which an insulating liquid flows is provided in the first container.