Gas-Insulated Switching Device Height Reduction
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Solution Overview
Problem
Gas-insulated switching apparatuses of the three-phase-isolated type face challenges in reducing their height due to the placement of grounding switches above connection buses, which increases the overall height of the apparatus.
Innovation Solution
The apparatus is designed with two sets of main buses extending in parallel at identical heights, with connection buses interconnecting them and divergence buses diverging downward, allowing the grounding switch to be positioned below the main buses, thereby reducing the overall height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If grounding switches are disposed above the connection buses, then the grounding switch can be easily accessed and operated, but the height of the gas-insulated switching apparatus increases
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the grounding switch below the connection bus rather than above it. Specifically, the grounding switch is disposed below the first connection bus, which interconnects the first main buses, thereby reducing the overall height of the apparatus while maintaining operational functionality
Solution Approach 2:
The patent redistributes components vertically across multiple levels. The grounding switch is placed at a lower elevation than the connection bus, creating a multi-level vertical arrangement that optimizes space utilization and reduces the apparatus height while preserving accessibility
2Length of stationary object
If the apparatus height is reduced for easier transportation, then transportation and installation costs decrease, but the placement of grounding switches becomes more constrained
Solution Approach 1:
The patent resolves the placement constraint by inverting the conventional positioning logic. Instead of placing the grounding switch above the connection bus (which increases height), it positions the grounding switch below the connection bus, thereby achieving height reduction without compromising placement flexibility
Solution Approach 2:
The patent segments the apparatus into distinct vertical zones: the upper zone contains the main buses and connection buses, while the lower zone accommodates the grounding switches. This spatial segmentation allows independent optimization of each zone, enabling height reduction while maintaining operational accessibility
Data Source
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AI summary
A gas-insulated switching apparatus (101) of a three-phase-isolated type includes: two first main buses (11a) and (21a) extending in parallel at an identical height; a first connection bus (31a) interconnecting the first main buses (11a) and (21a); a first divergence bus (41a) diverging downward from the first connection bus (31a); and a first circuit breaker (53) connected to the first divergence bus (41a), wherein a connection portion (60) between the first connection bus (31a) and the first divergence bus (41a) is disposed at a position lower than the height at which the first main buses (11a) and (21a) extend, and a grounding switch (52a) is disposed above the connection portion (60) between the first connection bus (31a) and the first divergence bus (41a).