Generator Circuit-Breaker Pole Frame Axial Drive Linkage
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Solution Overview
Problem
High-current switching arrangements in generator ducts face challenges in spatial efficiency and maintenance accessibility due to the need for substantial space and complex drive mechanisms, which complicates installation and servicing within limited and shock-hazard-protected environments.
Innovation Solution
A high-current switching arrangement with a pole frame and breaker pole secured to it, featuring a drive positioned on one end face of the pole frame, utilizing a linkage mechanism to transmit power to the active component, and incorporating a box-type enclosure for shock-hazard protection and easy access, with integral support legs for enhanced cooling and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a high-power drive is used to accelerate a contact member of high mass at a substantial rate, then the switching capability is improved, but the space occupied by the drive increases substantially
Solution Approach 1:
The drive is repositioned from a lateral arrangement to an axial arrangement along the pole frame. The drive means is disposed at one end of the pole frame and transmits motion axially through the breaker pole to the contact member, utilizing the axial dimension rather than lateral space. This dimensional reconfiguration reduces the lateral footprint while maintaining the high-power switching capability.
2Power
If the drive is arranged laterally next to the pole frame, then the switching mechanism is effective, but the accessibility for maintenance and installation is reduced
Solution Approach 1:
Instead of arranging the drive laterally next to the pole frame, the drive is inverted to an axial position at the end of the pole frame. This inversion makes the drive accessible from the end of the assembly, improving maintenance accessibility while still effectively transmitting power to accelerate the contact member through the axial linkage.
3Object-affected harmful factors
If a box-type enclosure is used to accommodate switching components, then shock-hazard protection is improved, but the spatial efficiency is reduced
Solution Approach 1:
The enclosure is merged with the pole frame structure, where the pole frame itself serves as part of the enclosing structure. The drive means is integrated into the pole frame, and the contact member moves within the structural framework of the pole frame, reducing the need for separate enclosing volumes while maintaining shock-hazard protection.
Data Source
AI summary
An exemplary high-current switching arrangement in a generator duct arranged between a generator and a transformer is disclosed. This arrangement includes a pole frame which can be positioned on a base surface, a breaker pole of a generator circuit-breaker which is secured to the pole frame, and a drive which is secured to the pole frame. The breaker pole includes an active component arranged along an axis designed for the conduction and interruption of high currents and which incorporates a power switching point, with two axially spaced current terminals. The drive is arranged on a first of two end faces of the pole frame, and includes a linkage mechanism that transmits power from the drive to the power switching point.