Adjustable Liquid Trap for Wind Tunnel Drainage
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Solution Overview
Problem
Wind tunnel devices face issues with liquid waste drainage due to differential pressure, leading to backflow into the tunnel, which is not adequately addressed by fixed orientations of drain lines and liquid traps, limiting operation across varying wind speeds.
Innovation Solution
An adjustable liquid trap integrated into the wind tunnel system that can be adjusted in height relative to the drain line to accommodate different operating conditions, preventing backflow and ensuring complete drainage of the droplet extractor reservoir regardless of wind tunnel speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed orientation drain line or liquid trap is used, then the device structure is simple, but liquid waste cannot drain completely under varying differential pressure conditions, causing backflow into the wind tunnel
Solution Approach 1:
The liquid trap is designed with adjustable height capability, allowing operators to change its position relative to the drain line based on wind tunnel operating conditions. This dynamic adjustment resolves the contradiction by enabling the system to adapt to varying differential pressure conditions while maintaining a relatively simple overall structure.
Solution Approach 2:
The invention changes the height parameter of the liquid trap relative to the drain line to accommodate different operating conditions. By adjusting this geometric parameter, the system can prevent backflow under varying pressure differentials without requiring complete structural redesign.
2Reliability
If the liquid trap is adjusted for high wind speeds, then backflow is prevented at high speeds, but drainage is incomplete at low wind speeds
Solution Approach 1:
The adjustable liquid trap allows operators to dynamically reposition the trap for different wind speed conditions. At high wind speeds, the trap is positioned to prevent backflow; at low wind speeds, it is repositioned to maximize drainage efficiency, thus resolving the contradiction between backflow prevention and drainage completeness across varying operating conditions.
3Adaptability or versatility
If the drain line orientation is fixed, then installation is simple, but the system cannot accommodate different wind tunnel operating conditions
Solution Approach 1:
The liquid trap is designed with adjustable positioning capability along the drain line, allowing it to be repositioned for different operating conditions. This provides adaptability to various wind tunnel conditions while maintaining relatively simple installation requirements compared to completely flexible or active control systems.
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 adjustable liquid trap effectively inhibits backflow into the wind tunnel and allows for complete drainage, enabling operation at various wind speeds without overflowing or reverse fluid flow, enhancing the reliability and efficiency of wind tunnel operations.
Implementation Method 1
differential pressure between the wind tunnel and the drain line, liquid trap, or waste container
Implementation Method 2
allow for complete drainage of the reservoir when the tunnel is not operating
Data Source
AI summary
A wind tunnel device may include a waste disposal unit configured to collect fluid from a droplet extractor positioned in a wind tunnel. The waste disposal unit may include a drain line and a liquid trap integrated in the drain line. The liquid trap may be adjustable during operation of the wind tunnel to accommodate different tunnel operating conditions (e.g., wind speeds) such that liquid waste does not backflow into the wind tunnel.