Arc Ventilation Detour Path for Multi-Stage Distributing Boards
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Solution Overview
Problem
Multi-stage distributing boards face challenges in effectively ventilating arc gases generated in lower compartments to prevent damage to upper compartments, particularly when multiple boards are arranged in parallel, due to the complexity of their structure and the need for efficient cooling and space minimization.
Innovation Solution
An arc ventilation system with a middle arc induction compartment and side arc ventilation compartments that create a detour route for arc gases, allowing for increased cooling time and effective discharge without affecting upper compartments, while minimizing the number of components and space required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple arc ventilation path is provided in the rear surface of the distributing board, then the structure is simple, but the arc ventilation function is ineffective in multi-stage distributing boards
Solution Approach 1:
The arc ventilation path is segmented into multiple sections: a first arc ventilation path from the lower breaker compartment through the rear surface, and a second arc ventilation path from the upper breaker compartment through the top surface. This segmentation allows each path to be optimized independently, ensuring effective arc ventilation for each compartment while maintaining overall structural simplicity.
2Speed
If arc gas is discharged quickly through a duct, then the discharge speed is fast, but the high temperature arc gas causes damage to surroundings
Solution Approach 1:
The invention introduces a time dimension by designing a detour path that extends the ventilation route. The arc gas is directed through a side arc ventilation compartment and middle arc induction compartment, creating a longer path that increases cooling time while maintaining discharge effectiveness. This dimensional extension allows the system to balance speed and temperature control.
3Productivity
If multiple distributing boards are arranged in parallel, then the system capacity increases, but the space required for arc ventilation components increases
Solution Approach 1:
The side arc ventilation compartment and middle arc induction compartment serve multiple functions: they provide arc ventilation for both lower and upper breaker compartments, enable cooling of arc gas, and facilitate discharge through a shared path. This multi-functionality allows multiple distributing boards to be arranged in parallel without proportionally increasing the space required for ventilation components.
4Loss of time
If a detour route is provided for arc ventilation, then cooling time is increased, but the path length increases
Solution Approach 1:
The middle arc induction compartment acts as an intermediary structure that receives arc gas from the lower breaker compartment and directs it through the side arc ventilation compartment. This intermediary approach creates an efficient detour path that maximizes cooling time while minimizing the overall path length, as the arc gas follows a optimized route through these intermediate chambers rather than a direct but shorter path.
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
The system effectively prevents arc damage to upper compartments by providing a bypass route for arc gases, allowing for efficient cooling and discharge, and reduces the space needed for installation by only requiring side arc ventilation compartments on the outer boards when multiple boards are arranged in parallel.
Implementation Method 1
arc gas of high temperature and high pressure is generated in the distributing board. The distributing board shall be capable of rapidly discharging the arc gas of high temperature and high pressure generated due to such fault to outside
Data Source
AI summary
The present invention relates to an arc ventilation system of a multi-stage distributing board, and more particularly, to an arc ventilation system of a multi-stage distributing board having an arc ventilation detour path, capable of preventing an arc generated in a lower compartment from damaging an upper compartment. The arc ventilation system of a multi-stage distributing board according to an embodiment of the present invention includes a first compartment provided at a first stage of an enclosure of the distributing board, a second compartment provided at a second stage located above the first stage, a side arc ventilation compartment provided at one side of the first compartment and the second compartment, and a middle arc induction compartment provided between the first compartment and the second compartment and communicating with the side arc ventilation compartment.