Wind Turbine Bottom Outlet Heat Dissipation Structure
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Solution Overview
Problem
As megawatt-level wind turbine generators increase in size, air-cooled generators require larger coolers for heat dissipation, leading to increased maintenance and repair costs due to taller structures.
Innovation Solution
A bottom outlet structure for wind turbine generators is introduced, featuring a nacelle cover with a ventilation port at the bottom, allowing for a heat dissipation assembly to be installed at two positions. This assembly includes a box body with a ventilated side and noise reduction side, improving heat dissipation efficiency without increasing the generator cooler size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the size of the cooler on the air-cooled generator is increased to improve heat dissipation cooling efficiency, then the heat dissipation efficiency is improved, but the height of the wind turbine generator is increased, which increases the maintenance and repair costs
Solution Approach 1:
The patent changes the exhaust discharge direction from horizontal (side outlet) or upward (top outlet) to downward (bottom outlet). The heat dissipation assembly is positioned at the bottom of the generator, with exhaust ports facing downward, allowing hot air to be discharged in a different spatial dimension. This enables improved heat dissipation without increasing the height of the wind turbine generator.
Solution Approach 2:
Instead of discharging exhaust air from the side or top of the generator as in conventional designs, this patent inverts the exhaust discharge direction to the bottom. The heat dissipation assembly is configured with exhaust ports at the bottom surface, reversing the traditional outlet orientation to achieve better heat dissipation while maintaining compact height.
2Productivity
If the size of the cooler on the air-cooled generator is increased to improve heat dissipation cooling efficiency, then the heat dissipation efficiency is improved, but the maintenance and repair costs are increased
Solution Approach 1:
The heat dissipation assembly is designed as a separate, detachable module from the main generator structure. It can be independently installed and removed, allowing maintenance personnel to access and service the heat dissipation components without disassembling the entire generator. This modular segmentation reduces maintenance complexity and costs while enabling adequate heat dissipation capacity.
3Productivity
If a bottom outlet structure is adopted, then the heat dissipation efficiency is improved and maintenance costs are reduced, but the device structure becomes more complex
Solution Approach 1:
The heat dissipation assembly serves multiple functions: it acts as both a cooling device for heat dissipation and a structural component that can be integrated into the generator housing. The assembly includes noise reduction components and can be configured with different exhaust port arrangements, making it a multi-functional element that addresses heat dissipation, noise control, and structural integration simultaneously.
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 bottom outlet structure enhances heat dissipation efficiency, reduces maintenance and repair costs, and simplifies transportation by avoiding height restrictions, while also improving the utilization of internal space within the nacelle cover.
Implementation Method 1
air is used as a cooling medium to cool the stator and rotor windings of the generator and the iron core of the stator
Implementation Method 2
exhaust is discharged through the ventilation port... the hot air is discharged through the exhaust hood... heat dissipation efficiency
Data Source
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AI summary
Disclosed are a bottom outlet structure of a wind turbine generator and an installation method thereof. The bottom outlet structure of the wind turbine generator includes a nacelle cover (100) and a heat dissipation assembly (400). A generator (300) of the wind turbine generator is installed in the nacelle cover (100) through a frame (200), a ventilation port (101) is formed at a bottom of the nacelle cover (100), and a first installation position is formed at the ventilation port (101); an accommodation space (201) is formed between the frame (200) and the ventilation port (101), and the accommodation space (201) is provided at intervals below the generator (300); a second installation position is formed on the nacelle cover (100), and the second installation position is accommodated in the accommodation space (201); and the heat dissipation assembly (400) is detachably connected to the first installation position or the second installation position.