Compact Torsion Bar Operation Device for Gas-Insulated Switchgear
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Solution Overview
Problem
The torsion bar in existing three-phase simultaneous operation devices for gas-insulated switchgear becomes long due to the need to store sufficient energy, limiting design flexibility by requiring additional space outside the tank.
Innovation Solution
The design incorporates three separate operation devices, each with a torsion bar, allowing for a folding structure that reduces the length while maintaining energy storage capacity, enabling the torsion bars to be shorter and more compact, thus minimizing the protrusion from the tank and enhancing design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single three-phase simultaneous operation device is used, then energy storage capacity is sufficient, but the torsion bar becomes long and design flexibility decreases
Solution Approach 1:
The patent divides the single three-phase operation device into three separate operation devices, each handling one phase. This segmentation allows each torsion bar to be shorter while collectively providing the necessary energy storage capacity across all three phases, thereby resolving the contradiction between energy storage and design flexibility.
2Use of energy by moving object
If a single three-phase simultaneous operation device is used, then energy storage capacity is sufficient, but additional space outside the tank is required
Solution Approach 1:
By segmenting the operation device into three separate units, each with its own compact torsion bar, the total volume occupied outside the tank is reduced. Each individual torsion bar requires less space, and their distributed arrangement minimizes the overall external space requirement while maintaining sufficient energy storage capacity.
3Adaptability or versatility
If separate operation devices are used for each phase, then design flexibility increases, but the number of components increases
Solution Approach 1:
The patent accepts the increased component count as a trade-off for achieving superior design flexibility. Each of the three separate operation devices can be independently optimized and arranged, allowing adaptable integration into the gas-insulated switchgear design while maintaining manageable complexity through modular architecture.
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 allows for a more compact operation device that can store and release energy efficiently, reducing the duration of arcs between contacts and increasing design flexibility for gas-insulated switchgear without compromising the ability to operate three phases simultaneously.
Implementation Method 1
a first torsion bar (43a) having a rod shape extending from the first main body (42a), and serving as a driving source to move the first interlocking portion (41a) and thus to move the first movable contact (3a)
Data Source
AI summary
A breaker includes a tank, first to third fixed contacts provided inside the tank, first to third movable contacts that are provided inside the tank and are movable, and first to third operation devices provided outside the tank to move the first to third movable, respectively. The first to third operation devices respectively include first to third torsion bars serving as a driving source to move the first to third movable contacts, respectively.