Reference Electrode Liquid Dripping Portion Design
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Solution Overview
Problem
Existing reference electrodes face functionality issues due to a decrease in internal liquid, leading to disrupted electrical conduction and potential failure in maintaining measurement accuracy, especially when the liquid junction portion is positioned at the bottom.
Innovation Solution
The design incorporates a tube-shaped lead-out portion guiding internal liquid, a liquid junction portion connected to the lead-out portion, and a liquid dripping portion that directs the internal liquid to the junction, ensuring continuous conduction even if the liquid level drops below the junction, with the internal electrode positioned further towards the lead-out end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the internal liquid amount decreases while the liquid junction portion is disposed towards the bottom, then the reference electrode cannot maintain electrical conduction between the internal electrode and the internal liquid, but increasing the internal liquid amount increases device complexity and maintenance requirements
Solution Approach 1:
The patent positions the internal electrode not only vertically but also radially outward towards the liquid junction portion. This radial extension into a different spatial dimension ensures that the electrode tip remains in contact with the internal liquid even when the liquid level drops, maintaining electrical conduction without requiring excessive internal liquid volume or complex accommodation structures.
Solution Approach 2:
The internal electrode is pre-positioned with its tip extending towards the liquid junction portion at a location where it will remain in contact with the internal liquid throughout the expected liquid level range. This preliminary positioning ensures continuous electrical conduction is maintained without requiring active adjustment or complex maintenance during operation.
2Reliability
If the internal electrode and liquid junction portion are connected by a braided body to maintain conduction when bubbles form, then the structure becomes more complex and internal liquid drawn upward by the braided body does not reach the internal electrode when liquid decreases
Solution Approach 1:
The patent removes the braided body connection element from the structure entirely. Instead of using a complex braided body to connect the internal electrode and liquid junction portion, the solution directly positions the internal electrode tip to extend towards the liquid junction portion, eliminating the intermediary braided structure while maintaining electrical conduction reliability.
3Measurement precision
If regular maintenance is required to maintain functionality, then measurement precision can be maintained, but productivity decreases due to maintenance interruptions
Solution Approach 1:
The patent creates a self-sustaining structure where the internal electrode's radial positioning automatically ensures continuous contact with the internal liquid throughout operation. The liquid depletion-resistant design eliminates the need for external maintenance interventions, allowing the reference electrode to maintain measurement precision continuously without productivity interruptions.
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
This configuration maintains stable electrical conduction and reference potential application, mitigating the impact of internal liquid depletion and preventing functional failure, allowing for long-term reliable measurements without requiring regular maintenance.
Implementation Method 1
a liquid dripping portion (58) that has a first end connected to the liquid junction portion (54), has a second end (68) that protrudes into the accommodation portion (40), and that guides the internal liquid (42) to the liquid junction portion (54)
Implementation Method 2
a liquid junction portion (54) that is connected to an end of the lead-out portion (46), and that allows the internal liquid (42) to seep out
Data Source
AI summary
A reference electrode is provided with an accommodation portion that is provided with a tube-shaped lead-out portion that can guide an accommodated internal liquid; a liquid junction portion that is connected to an end of the lead-out portion, and that allows the internal liquid to seep out; a liquid dripping portion that has a first end connected to the liquid junction portion, that has a second end that protrudes into the accommodation portion, and that guides the internal liquid to the liquid junction portion; and an internal electrode having at least a portion that is positioned further towards the first end side than the second end of the liquid dripping portion.