Thermally Conductive Separating Elements for Rail Vehicle Bushings
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Solution Overview
Problem
Thermal problems arise in rail vehicle components due to the routing of line elements through bushings, particularly electrical conductors, which experience power losses and increased temperatures due to low thermal conductivity of insulating materials, exacerbated in narrow feedthroughs and load-bearing components where bushing cross-sections are minimized for mechanical stability.
Innovation Solution
Incorporating thermally conductive separating elements and spacer elements within the bushings to separate and dissipate heat radially and longitudinally, allowing for effective heat dissipation and thermal decoupling between line elements, thereby reducing temperature rises and maintaining mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bushing cross-section is minimized for mechanical stability, then the mechanical stability of the component is improved, but the heat dissipation capability deteriorates
Solution Approach 1:
The bushing is segmented into multiple receiving sections for different line elements, with thermally conductive separating elements between them. This segmentation allows each section to manage heat independently while maintaining overall mechanical stability through the distributed structure.
Solution Approach 2:
Thermally conductive separating elements are introduced as intermediaries between line elements. These separating elements facilitate heat transfer from the line elements to the bushing wall, improving heat dissipation without requiring a larger bushing cross-section, thus preserving mechanical stability.
2Reliability
If insulating material with low thermal conductivity is used, then the electrical insulation performance is improved, but the heat dissipation capability deteriorates
Solution Approach 1:
Thermally conductive separating elements serve as thermal intermediaries that bridge the gap between the electrically insulating material and the heat-dissipating bushing wall. These elements conduct heat away from the line elements through the insulating material without compromising electrical insulation.
Solution Approach 2:
Heat dissipation is extended into the longitudinal dimension by using separating elements that conduct heat along the length of the bushing, not just radially outward. This multi-directional heat dissipation approach overcomes the limitations of radially-oriented insulation.
3Area of stationary object
If multiple line elements are routed closely together, then the space utilization is improved, but the thermal coupling between line elements worsens
Solution Approach 1:
The bushing is divided into multiple receiving sections with separating elements between them. This segmentation allows multiple line elements to be routed closely together for space efficiency while the separating elements prevent thermal coupling by providing dedicated heat dissipation paths for each element.
Solution Approach 2:
Thermally conductive separating elements act as intermediaries between adjacent line elements. These elements facilitate heat transfer from each line element to the bushing wall, preventing heat buildup and thermal coupling between closely routed line elements while maintaining compact spacing.
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 reduces thermal issues within the bushings by enhancing heat dissipation and preventing overheating, allowing for a smaller cross-section of the bushing without compromising mechanical stability, thus improving the thermal management of rail vehicle components.
Implementation Method 1
the at least two line elements are separated from one another by at least one separating element made of a heat-conducting material
Implementation Method 2
the device has at least one heat-conducting spacer element for transporting heat from the device into the component, with the at least one spacer element being arranged between the device and an inner wall of the bushing
Implementation Method 3
a thermal decoupling between the line elements is advantageously achieved, with the thermal decoupling being able in particular to prevent a particularly strongly heated or hot line element from heating up an adjacent other line element
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
According to the invention, a device for receiving at least two conduction elements (15) in a duct of a vehicle (99) has at least one separating element (32) composed of a heat-conducting material, by which the at least two conduction elements (15) are separated from one another. According to the invention, a component and a vehicle furthermore have a device according to the invention or a component according to the invention and a device.