Pressurized-Gas Circuit Breaker Assembly with Eccentric Shaft Adjustment
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Solution Overview
Problem
High voltage electrical switchgear assembly and disassembly processes are complex and prone to gas leaks, requiring careful monitoring to prevent gas loss during transport and maintenance.
Innovation Solution
A gas-insulated current transmission line circuit breaker design with an upper and lower enclosure and a connecting sleeve, featuring an eccentric adjustment system for the connecting shaft, allowing for simplified assembly and reduced gas loss by eliminating the need for pre-connection of the shaft before sleeve mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the connecting shaft is connected to the rod and connecting piece before mounting the sleeve, then the assembly can be completed, but the operation becomes complex and prone to errors
Solution Approach 1:
The patent introduces a guiding member as an intermediary component that facilitates the connection between the connecting shaft and the rod. The guiding member provides alignment guidance and enables the shaft to be connected after the sleeve is mounted, simplifying the assembly sequence and reducing operational complexity
Solution Approach 2:
The patent applies preliminary action by pre-assembling the sleeve on the lower enclosure before connecting the connecting shaft to the rod. This reverses the traditional sequence and allows for easier positioning and connection of the shaft components without requiring complex pre-alignment operations
2Adaptability or versatility
If the circuit breaker is disassembled for transport or maintenance, then the elements can be separated, but gas loss occurs during disassembly and reassembly
Solution Approach 1:
The patent employs a nested structure where the connecting shaft is received within the sleeve, and the guiding member is positioned within the sleeve to guide the shaft. This nested arrangement allows for compact disassembly while maintaining sealed connections, preventing gas loss during separation and reassembly operations
Solution Approach 2:
The guiding member acts as an intermediary that ensures proper alignment and sealing during the disassembly and reassembly process. By providing guided movement and positioning, it prevents misalignment that could cause gas leaks, enabling safe disassembly for transport and maintenance
3Reliability
If special monitoring is implemented during assembly operations, then gas leaks can be avoided, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The patent implements self-service through the guiding member that automatically provides alignment guidance during assembly. The guiding structure inherently prevents misalignment and potential gas leaks without requiring external monitoring or complex control systems, maintaining reliability while simplifying the assembly process
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
Simplifies the assembly of enclosures while minimizing gas losses during assembly and disassembly, ensuring a leak-tight connection and efficient gas management.
Implementation Method 1
the adjustment means consist of an eccentric system which is carried in rotation by the sleeve and which comprises a finger engaging in an associated orifice of the shaft
Data Source
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AI summary
The invention relates to a gas circuit breaker comprising an upper chamber (12) that comprises an upper housing comprising a movable rod, a lower chamber (14) that comprises a lower housing comprising a movable linking end-piece (36), and a sleeve (38) for coupling the upper housing to the lower housing (30) such that the inner spaces of the two housings are in communication with one another, in which a shaft (40) coupling the rod to the linking end-piece (36) is movably mounted, characterized in that it comprises a means (60) for adjusting the axial position of the coupling shaft (40) relative to the sleeve (38) during an operation of assembling the chambers (12, 14) together.