Pump Inspection via Liquid Interface Visualization
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Solution Overview
Problem
Existing methods for inspecting the operation condition of pumps, particularly those generating small pressure, lack effectiveness in detecting stable flow rates and pulsations, which are crucial for micro-reactor applications where constant flow is essential.
Innovation Solution
A method and apparatus involving a channel circuit with input ports for two liquids, where one liquid is supplied as a reference flow and the other by the target pump, allowing visualization of their interface to determine the pump's operation condition, utilizing a substrate with microchannels and a visualizing mechanism to inspect the interface for stability and pulsations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional inspection methods are used for pumps generating small pressure, then the inspection process is simple, but the ability to detect stable flow rates and pulsations is insufficient
Solution Approach 1:
The patent introduces an intermediary visualization system that converts invisible pump performance parameters (flow stability, pulsations) into visible interface patterns. The interface between two liquids acts as a mediator that amplifies and makes observable the subtle variations in pump output, enabling detection without complex sensors or measurement devices.
Solution Approach 2:
The patent creates a visual copy of the pump's flow characteristics through the liquid interface. Instead of directly measuring flow rate and pulsations with complex instruments, the system reproduces these characteristics as visible interface patterns (stable vs. pulsating), allowing inspection through visual observation or simple imaging.
2Reliability
If the target pump supplies the second liquid, then the pump's operation condition can be inspected, but the pressure generated by the pump is relatively small making detection difficult
Solution Approach 1:
The patent introduces a reference pump that generates a stable reference flow to counterbalance the small pressure variations from the target pump. By comparing the target pump's output against this stable reference through the liquid interface, even small pressure changes and pulsations become detectable as deviations from the stable interface pattern.
Solution Approach 2:
The patent changes the detection parameter from direct pressure measurement (which is difficult for small pressures) to visual interface pattern observation. By transforming the measurement parameter from pressure to optical/visual domain, the system gains sensitivity to small pressure variations without requiring high-pressure generation.
3Stability of the object's composition
If constant flow rates are required for micro-reactor operation, then stable liquid supply is achieved, but inspection of pump operation condition becomes necessary to maintain this stability
Solution Approach 1:
The patent enables the pump system to self-inspect through the liquid interface visualization. The interface automatically reflects the pump's operational state, providing real-time feedback without requiring external inspection equipment or stopping the system. This allows continuous monitoring of flow stability while maintaining productivity.
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
Enables accurate and cost-effective inspection of pump operation conditions, including detection of pulsations, by visualizing the interface between two liquids, allowing for adjustments to ensure stable flow rates and pressure matching, thus improving pump performance in micro-reactor systems.
Implementation Method 1
a visualizing mechanism for visualizing an image of an interface of the first and second fluids joined in the third channel
Data Source
AI summary
A circuit is used which includes: first and second channels having first and second input ports, respectively, and a third channel having an end where the first and second channel meet and are connected to the third channel. A first liquid to the first input port is supplied to generate a reference flow. A second liquid is supplied by the target pump to the second input port. An interface of the first and the second liquids joined in the third channel is inspected. The operation condition of the target pump is determined from a condition of the inspected interface. Pulsation in the flow supplied by the target pump is detected from waves in the interface visually inspected. The image of the interface may be magnified. Pulsation in the reference pump may be absorbed.