Circuit Breaker Pole Structure for Rigid Switchgear Enclosures
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Solution Overview
Problem
Low voltage or medium voltage switchgear and control gear enclosures face mechanical instability and increased costs due to the need for additional structural reinforcement and precise alignment of mechanical parts, which is exacerbated by temperature and stress factors.
Innovation Solution
A circuit breaker pole design that provides mechanical reinforcement by being fixedly connected to enclosure walls, allowing thinner walls and reduced additional supporting structures, with a configuration that ensures structural integrity and alignment while enabling easy removal and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If enclosures are made larger to accommodate switchgear components, then the capacity and functionality are improved, but mechanical instability and alignment problems worsen due to the flexibility of large surface area sheet metal enclosures
Solution Approach 1:
The invention divides the enclosure into multiple smaller panels that are interconnected. Instead of using a single large sheet metal enclosure that becomes flexible and unstable, the enclosure is segmented into manageable panels that maintain structural rigidity while providing the necessary capacity for switchgear components.
Solution Approach 2:
The invention adds structural support elements that extend in additional dimensions (such as vertical support posts and cross-bracing) to reinforce the enclosure panels. This dimensional reinforcement provides mechanical stability without increasing the internal volume significantly, allowing the enclosure to maintain its shape and alignment under various operating conditions.
2Strength
If additional mechanical reinforcement and supporting structures are added to enclosures, then structural integrity is improved, but device complexity and manufacturing costs worsen
Solution Approach 1:
The invention designs support structures that serve multiple functions: they provide mechanical reinforcement for structural integrity, act as mounting points for electrical components, and facilitate assembly and disassembly operations. This multi-functionality reduces the need for separate dedicated reinforcement elements, thereby simplifying the overall device complexity.
Solution Approach 2:
The invention combines the structural reinforcement function with the component mounting function by integrating support posts and bracing elements into the same structural framework that holds electrical components. This merging of functions reduces the total number of separate parts and simplifies manufacturing while maintaining the required structural integrity.
3Stability of the object's composition
If sheet metal thickness is increased to reduce flexibility, then mechanical stability is improved, but manufacturing costs and material usage worsen
Solution Approach 1:
By segmenting the enclosure into multiple thinner panels connected by rigid support structures, the invention achieves the same level of mechanical stability as a single thick panel would provide, but using significantly less material. The segmented approach allows each panel to be thin and lightweight while the connecting support structures provide the necessary rigidity.
Data Source
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AI summary
The present invention relates to a circuit breaker pole (4) for low voltage or medium voltage operation, the circuit breaker pole comprising: a main body section; a first end section; and a second end section. The first end section is configured to fixedly connect to a front wall (13) of the enclosure (1); the second end section is configured to fixedly connect to a rear wall (14) of the enclosure (1).