Switchgear Junction Box Layout for Flexible Drawer Positioning
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Solution Overview
Problem
Existing junction boxes in switchgears occupy narrow spaces, making installation and maintenance difficult due to limited wiring space and inflexible drawer arrangements.
Innovation Solution
A junction box design with a base, output end with lateral supply busbars, and a protective housing that allows for flexible positioning and connection of drawers of different specifications, optimizing wiring space and improving installation density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cables are used to distribute power from the busbar to multiple drawers, then power distribution is achieved, but the space inside the switchgear becomes narrow and installation/maintenance becomes difficult
Solution Approach 1:
The junction box is divided into multiple splicing modules that can be independently assembled and connected. Each module contains specific busbars and connection terminals, allowing the power distribution system to be segmented into manageable units that optimize space utilization while maintaining ease of installation and maintenance access.
Solution Approach 2:
The patent transitions from traditional cable-based power distribution to a busbar-based system that utilizes the lateral dimension for power distribution. Multiple supply busbars are arranged laterally within the junction box, enabling power to be distributed to multiple drawers simultaneously without requiring narrow cable routing spaces, thus expanding the effective wiring space in the switchgear.
2Reliability
If traditional junction box design is used, then power supply to drawers is achieved, but the wiring space is limited and drawer arrangement flexibility is reduced
Solution Approach 1:
The junction box is designed with universal splicing modules that can accommodate different drawer configurations and power distribution requirements. The modular structure with standardized connection interfaces allows the same junction box design to serve multiple functions and adapt to various drawer arrangements, enhancing both reliability and versatility.
Solution Approach 2:
The junction box incorporates dynamic positioning capabilities through its modular splicing design, allowing the supply busbars and connection terminals to be flexibly arranged according to different drawer positions and specifications. This dynamic adaptability enables optimal wiring space utilization while maintaining reliable power supply to various drawer configurations.
3Adaptability or versatility
If supply busbars are arranged laterally in the base, then flexible drawer positioning is enabled, but the structural complexity of the junction box increases
Solution Approach 1:
The complex lateral busbar arrangement is segmented into multiple standardized splicing modules, each containing a subset of busbars and connection terminals. This segmentation reduces the perceived structural complexity by breaking down the overall complex structure into simpler, repeatable units that can be systematically assembled.
Solution Approach 2:
Different regions of the junction box are designed with locally optimized structures - each splicing module has a specific configuration of busbars and terminals suited for its position in the lateral arrangement. This local quality approach allows flexible drawer positioning while managing overall structural complexity through localized standardization.
Data Source
AI summary
According to an embodiment of the present disclosure, there is provided a junction box and a switchgear for a switchgear. The junction box includes: a base, arranged within the switchgear; an output end, coupled to the base, and comprising: a plurality of supply busbars, each arranged within the base in a lateral direction, and adapted to be electrically connected to a primary incoming plug of a plurality of drawers at any position along the supply busbar in the lateral direction to allow power supply to the drawer; an input end, comprising a plurality of adapter pieces, respectively coupled to the supply busbar, and electrically connected to the primary plug-in within the switchgear; and a protective housing, arranged outside the plurality of supply busbars, and adapted to provide insulation protection to the plurality of supply busbars. The switchgear includes: a cabinet, a junction box arranged within the cabinet, and a drawer coupled to the junction box. Thereby, the installation density of the drawer can be increased, the spatial layout in the switchgear can be optimized, and the convenience of installation and maintenance of the facilities in the switchgear can be improved.