Box Substation Ventilation System for Heat Dissipation
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Solution Overview
Problem
Box-type substations face challenges in effectively removing hot air, leading to heat accumulation that affects the service life of electronic components.
Innovation Solution
A ventilation and heat dissipation system is introduced, featuring a substation box with a return air inlet, an inclined inner top plate, a circulation fan, and a refrigeration element, which guides hot air to be collected and discharged outside, along with an inclined deflector plate and air outlet plate to enhance heat dissipation and prevent debris and rainwater entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the box substation uses a fully enclosed steel structure box for protection, then the substation achieves moisture-proof, rust-proof, dust-proof, and fire-proof properties, but heat accumulates inside the shell affecting the service life of electronic components
Solution Approach 1:
The enclosed shell is segmented by introducing ventilation openings (intake openings at the bottom, exhaust openings at the top) and internal partitions (baffles) that divide the interior into distinct zones. This segmentation allows different regions to serve different functions: some areas for heat intake, others for heat exhaust, while maintaining the overall protective enclosure. The segmentation resolves the contradiction by creating thermal pathways without compromising the protective integrity of the enclosed structure.
Solution Approach 2:
The patent introduces intermediary elements such as ventilation openings, exhaust fans, and heat dissipation devices that act as mediators between the enclosed interior and the external environment. These intermediaries enable thermal exchange while preserving the protective enclosure. The exhaust fan specifically serves as an active intermediary that forces hot air out, and the heat dissipation devices (heatsinks, heat pipes) act as intermediaries that transfer heat from electronic components to the ventilation system, thus resolving the heat accumulation problem without opening the enclosed structure.
2Reliability
If the box substation is fully enclosed for protection, then it achieves fire-proof and anti-theft properties, but hot air cannot be effectively removed from the inside
Solution Approach 1:
The patent implements preliminary action by pre-configuring the enclosed structure with strategically placed ventilation openings, exhaust fans, and heat dissipation devices during manufacturing. The intake openings are positioned at the bottom to capture cooler air, while exhaust openings are placed at the top for hot air discharge. The exhaust fans are pre-installed and configured to activate when heat accumulation is detected. This preliminary configuration ensures that when the substation is deployed, the heat dissipation system is already in place and operational, resolving the contradiction between enclosed protection and heat dissipation efficiency without requiring retroactive modifications.
3Temperature
If ventilation openings are added to remove hot air, then heat dissipation improves, but the risk of debris and rainwater entering increases
Solution Approach 1:
The patent applies local quality by equipping the ventilation openings with selective filtering properties. The ventilation openings are designed with specific geometries that allow air passage while blocking debris. Rain caps or sloped covers are added to specific opening locations to prevent rainwater entry while maintaining air flow. The exhaust fan intake is positioned and configured with local protective measures such as mesh screens or grilles that filter debris. This localized application of protective qualities to specific openings resolves the contradiction by allowing heat dissipation through targeted openings while protecting against harmful factors at those same locations.
Solution Approach 2:
The patent employs inversion by reversing the traditional approach of having openings vulnerable to external elements. Instead of simply opening the structure for ventilation, the design inverts the protection logic by having the ventilation system actively reject harmful factors. The exhaust fan creates negative pressure that draws air inward through filtered paths, effectively pushing debris and rainwater away from the openings. The heat dissipation system is configured to expel air in a direction that prevents rainwater ingress, inverting the usual concern about openings being vulnerable to external elements.
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 heat accumulation, improving the service life of electronic components and enhancing the substation's resistance to wind and vibration while maintaining electrical safety.
Implementation Method 1
A circulation fan is arranged on the top of the inner top plate and forms a circulation cavity with the substation box roof, and one end of the circulation cavity away from the circulation fan is connected with the outside of the substation box
Implementation Method 2
When the density of heat in the air decreases due to thermal expansion and contraction, the hot air rises and is collected by the inner top plate
Implementation Method 3
the inner top plate is inclined and the height of one end close to the circulation fan is higher than that of the other end
Data Source
AI summary
The present patent discloses a ventilation and heat dissipation box-type substation, which includes a substation box and a substation box roof, and the surroundings of the substation box roof located on the outside of the substation box and not higher than the height of the top of the substation box. The substation box is provided with a return air inlet, and the inside of the substation box roof is provided with an inner top plate that collects the heat in the substation box. A circulation fan is arranged on the top of the inner top plate and forms a circulation cavity with the substation box roof, and one end of the circulation cavity away from the circulation fan is connected with the outside of the substation box. The present patent effectively avoids the accumulation of heat, which affects the service life of electronic components.