Modular Expansion Tank Distribution for Rail Vehicle Cooling Stability
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Solution Overview
Problem
Existing vehicle cooling systems for rail vehicles face mechanical stability issues due to asymmetric mass distribution caused by a single expansion tank, limiting the capacity and stability of the cooling tower.
Innovation Solution
A modular expansion tank system with multiple individually designed tanks distributed symmetrically around the fan housing, connected by coolant lines, which are fluidically separate and arranged outside the fan housing to maintain mechanical stability and increase capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single expansion tank is arranged on the cooling tower, then the cooling system can be simplified, but asymmetric mass distribution is formed which reduces mechanical stability
Solution Approach 1:
The single expansion tank is divided into multiple smaller expansion tanks (at least two) that are distributed around the cooling tower. This segmentation allows the mass to be distributed more evenly, reducing asymmetric mass distribution while maintaining the cooling function. Each smaller tank can be positioned to balance the overall mass distribution, thereby improving mechanical stability without significantly increasing system complexity.
Solution Approach 2:
The invention intentionally introduces asymmetric mass distribution through strategically positioned expansion tanks to counterbalance existing asymmetries in the cooling tower structure. By placing expansion tanks at specific locations around the cooling tower, the overall center of gravity is adjusted to achieve better mechanical stability, transforming the problem of asymmetry into a solution.
2Quantity of substance
If the expansion tank capacity is increased, then the coolant storage volume is improved, but the asymmetric mass distribution is exacerbated which reduces mechanical stability
Solution Approach 1:
Instead of using one large expansion tank that creates significant asymmetric mass distribution, the system uses multiple smaller expansion tanks whose combined capacity provides the required coolant storage volume. These distributed tanks can be positioned to balance mass distribution, achieving both adequate storage capacity and improved mechanical stability.
Solution Approach 2:
The expansion tanks are distributed in a spatial arrangement around the cooling tower rather than concentrated in one location. This three-dimensional distribution allows the system to achieve the required total volume while optimizing the center of gravity position and mass distribution, thereby improving mechanical stability without sacrificing storage capacity.
3Stability of the object's composition
If multiple expansion tanks are distributed around the blower housing, then mechanical stability is improved through symmetric mass distribution, but the device complexity increases
Solution Approach 1:
The system divides the expansion tank function into multiple independent units distributed around the cooling tower. While this increases the number of components, each unit is simpler in design and can be independently installed and maintained, potentially reducing overall system complexity in terms of manufacturing and assembly.
Solution Approach 2:
Multiple expansion tanks are fluidically connected to form a integrated cooling system that functions as a unified whole. The tanks work together to provide both the required storage capacity and the mass distribution benefits, merging individual simple components into a complex system that achieves superior mechanical stability.
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 solution enhances mechanical stability and capacity while reducing material costs and simplifying production, achieving a more compact and space-optimized design with improved handling and adaptability.
Implementation Method 1
a cooling air-coolant heat exchanger through which the cooling airflow can flow for cooling a coolant
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to a vehicle cooling system (1) and an expansion tank system (7) for a vehicle cooling system (1). The present invention is based on the general concept of designing an expansion tank system (7) which has several separately designed individual expansion tanks (8) that are arranged distributed around a blower housing (4) with respect to a circumferential direction (37).