Sample Water Pressurization for Bubble-Free Conductivity Inspection
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Solution Overview
Problem
Air bubbles produced on measurement electrodes during the measurement of conductive properties of sample water lead to unstable measurements due to changes in the area of contact and conductive property, and degassing methods to prevent bubbles can alter the conductive property itself.
Innovation Solution
An inspection apparatus and method that pressurizes the sample tube with gas while sending sample water to the measurement unit, using a controller to control the liquid and gas flow, preventing gas production and maintaining stable conductive property measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a degasser is used to reduce pressure and degas sample water, then air bubbles on the measurement electrode are suppressed, but the conductive property of sample water is altered
Solution Approach 1:
The invention changes the pressure parameter from reduced pressure (degassing) to increased pressure (pressurization). By pressurizing the sample tube, gas solubility in sample water is increased, which prevents gas production and air bubble formation on electrodes, thereby maintaining measurement stability without altering the conductive property through degassing processes.
2Device complexity
If sample water is transferred without pressurization, then the measurement process is simple, but air bubbles are produced on the measurement electrode causing unstable measurements
Solution Approach 1:
The invention applies pneumatic pressurization by introducing gas into the sample tube to increase pressure. This pneumatic approach prevents air bubble formation on measurement electrodes during sample water transfer, thereby improving measurement stability while maintaining relative system simplicity through the use of gas pressurization rather than complex mechanical degassing 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
Stable measurement of conductive properties is achieved by increasing gas solubility in sample water, preventing gas generation during liquid transfer, and ensuring accurate conductivity readings.
Implementation Method 1
sample water is sent to the measurement unit while the inside of the sample tube is pressurized with the gas, so that solubility of gas in sample water can be increased
Data Source
AI summary
An inspection apparatus includes a measurement unit, a flow-in tube for flow of sample water into the measurement unit, a connection portion that connects a sample tube and the measurement unit to each other, a liquid sending portion that sends sample water to the measurement unit, a pressurization pump that increases a pressure in the inside of the sample tube, and a controller. The controller controls operations of the liquid sending portion and the pressurization pump to suppress within a prescribed range, variation in pressure applied to sample water until sample water reaches the measurement unit from the inside of the sample tube.