Vacuum Circuit Breaker Linkage for Compact Grounded Tanks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing vacuum circuit breakers face challenges in miniaturization due to the size of the mechanism within the grounded tank required to change the direction of the driving force, making it difficult to reduce the overall size of the device.
Innovation Solution
The design includes a tubular grounded tank with an insulating rod and a drive conductor, along with tubular bushings and vacuum valves, utilizing levers and flexible conductors to change the direction of the driving force efficiently, reducing the size of the mechanism within the tank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a link mechanism is provided within the grounded tank to change the direction of the driving force, then the driving force can be transmitted to the movable side of the vacuum valves, but the grounded tank becomes large in size and difficult to miniaturize
Solution Approach 1:
The patent extracts the direction-changing function from the internal link mechanism and relocates it to the external operating device. The operating device, positioned outside the grounded tank, incorporates the direction-changing mechanism, allowing the driving force to be redirected before entering the tank. This eliminates the need for a bulky internal link mechanism, thereby reducing the grounded tank size while maintaining driving force transmission capability.
Solution Approach 2:
The patent introduces an intermediary mechanism (the operating device with direction-changing capability) that mediates between the external actuation force and the internal vacuum valve movement. This intermediary performs the direction-changing function externally, allowing compact internal tank design while still achieving the necessary force redirection for valve operation.
2Reliability
If the grounded tank is filled with insulating gas for insulation, then the electrical insulation performance is improved, but the tank size increases and miniaturization becomes difficult
Solution Approach 1:
The patent extracts the direction-changing mechanism from the grounded tank interior and places it in the external operating device. This removal of unnecessary internal components reduces the required insulation volume, allowing the tank to be miniaturized while maintaining adequate insulating gas fill for electrical insulation performance.
Solution Approach 2:
The patent changes the spatial parameters of the grounded tank by reducing its volume through the removal of internal link mechanisms. The insulating gas is retained in the reduced-volume tank, maintaining electrical insulation performance while achieving miniaturization of the overall device.
Data Source
AI summary
A vacuum circuit breaker includes: an insulating rod disposed within a grounded tank; a drive conductor connected to the insulating rod; a first bushing and a second bushing connected to the side of the grounded tank; vacuum valves including movable contacts; levers rotatably coupled at end portions on one side to the insulating rod or the drive conductor; movable conductors electrically connected at end portions on one side to the movable contacts; and links rotatably coupled at end portions on one side to the end portions on the other side of the movable conductors and rotatably coupled at end portions on the other side to the end portions on the other side of the levers.