Compact Electric Switching Device with Insulating Support Column
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrical switching devices require larger sizes to ensure adequate insulation distances, especially under high voltage loads, which is impractical in densely populated regions with limited space, and existing designs do not efficiently manage forces and overvoltages.
Innovation Solution
The design incorporates an electrically insulating support structure with a base of conductive elements and an insulating column, featuring a length ratio of insulation distances that allows for compact dimensions while maintaining sufficient electrical isolation, including multiple-break switching paths and tubular switching chambers with insulating fluids to manage forces and overvoltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the insulation distance is increased to ensure sufficient electrical isolation under high voltage loads, then the electrical switching device size must be increased, but the available installation space is limited in densely populated regions
Solution Approach 1:
The patent transitions from horizontal insulation distance arrangement to vertical insulation distance arrangement by using an electrically insulating support column. This dimensional change allows the insulation distance to be achieved in the vertical direction rather than requiring increased horizontal space, thereby reducing the device's footprint while maintaining adequate insulation for high voltage applications
Solution Approach 2:
The support frame combines electrically conductive elements (base) with electrically insulating materials (support column made of electrically insulating sections). This composite structure allows the conductive base to provide mechanical support and electrical grounding, while the insulating column provides the necessary electrical isolation, optimizing both structural integrity and electrical performance in a compact configuration
2Reliability
If the insulation distance of the switching chamber is increased to handle high voltages, then the device dimensions increase, but compact dimensions are required for practical installation
Solution Approach 1:
The patent repositions the insulation distance requirement from the horizontal plane to the vertical plane by using the support column structure. The first electrically insulating switching chamber maintains a compact horizontal footprint while achieving the required insulation distance vertically through the support column, allowing high voltage handling in a compact form factor
Solution Approach 2:
The electrically insulating support column acts as an intermediary element between the conductive base and the switching chamber. It provides the necessary electrical isolation and mechanical support, enabling the switching chamber to be positioned at an optimized height that achieves required insulation strength without increasing horizontal dimensions
3Volume of stationary object
If the support structure is designed with sufficient insulation distance, then the device becomes more compact, but the mechanical stability and force distribution must be maintained
Solution Approach 1:
The support frame uses a composite design combining a conductive base with an insulating support column. The base provides a wide mechanical foundation for stability, while the column provides vertical support and electrical insulation. This composite structure achieves compact overall dimensions while maintaining mechanical stability through the distributed force path from the switching chamber through the column to the base
Solution Approach 2:
The support structure is segmented into distinct functional components: the conductive base for mechanical support and grounding, the insulating support column for electrical isolation and vertical support, and the switching chamber for electrical switching. This segmentation allows each component to be optimized for its specific function while working together to achieve both compactness and mechanical stability
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
This configuration enables the creation of compact, reliable electrical switching devices capable of handling high voltages, reduces upheaval forces, and symmetrically distributes forces within the support frame, while also limiting overvoltages through the use of switching resistors and insulating fluids, enhancing mechanical stability and insulation strength.
Implementation Method 1
an electrically insulating support column... the support frame comprises a base made of electrically conductive elements and an electrically insulating support column
Implementation Method 2
tubular switching chambers with insulating fluids to manage forces and overvoltages
Data Source
AI summary
The invention relates to an electrical switching device comprising an electrically insulating supporting structure (1). The electrically insulating supporting structure (1) supports a first switching point (8) and a second electrically insulating switching chamber (6). The ratio of an insulation section (11a) of the first electrically insulating switching chamber (6) to an insulation section (4) of the supporting structure (1) is less than 0.6, in particular less than 0.45.