Potassium Nitrate Level Sensing for High-Temperature Strengthening Furnaces
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Solution Overview
Problem
Existing potassium nitrate level detection methods in glass strengthening furnaces are inadequate, particularly at high temperatures, leading to inefficiencies and potential deformation during chemical strengthening, and require manual adjustment, which is time-consuming and prone to errors.
Innovation Solution
A potassium nitrate level detection sensing module that includes a temperature sensing module or resistance measurement module to automatically detect when the liquid level reaches a set threshold, using electrical signals and signal processing units to ensure accurate and automated level detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ultrasonic sensor is used to detect potassium nitrate level, then level detection is possible, but it cannot be used at high temperature of 200 degrees or higher
Solution Approach 1:
The patent replaces the ultrasonic sensor (acoustic field-based) with a capacitance sensor that operates on electrical field principles. The capacitance sensor includes a sensing electrode that detects changes in capacitance caused by the dielectric properties of potassium nitrate at different levels, enabling operation in high-temperature environments where ultrasonic sensors fail.
Solution Approach 2:
The patent changes the detection parameter from ultrasonic wave reflection to electrical capacitance measurement. The capacitance sensor measures the capacitance between the sensing electrode and reference electrode, which changes as potassium nitrate level changes, providing a temperature-resistant detection method suitable for high-temperature strengthening furnaces.
2Measurement precision
If floating sensor is used to detect potassium nitrate level, then level detection is possible, but the floating sensor is fixed by potassium nitrate and thus the level cannot be measured
Solution Approach 1:
The patent replaces the mechanical floating sensor with a capacitance-based sensing system. The sensing electrode is positioned vertically and detects potassium nitrate level through electrical field interaction rather than mechanical buoyancy, eliminating the problem of the sensor being fixed or stuck by the molten potassium nitrate.
Solution Approach 2:
The patent introduces an insulating coating on the sensing electrode that acts as an intermediary layer. This coating prevents direct contact and adhesion between the electrode and potassium nitrate while still allowing capacitance detection, ensuring the sensor remains mobile and functional throughout operation.
3Measurement precision
If manual adjustment of potassium nitrate level is performed, then level control is possible, but it is time-consuming and prone to errors
Solution Approach 1:
The patent implements an automated control system where the capacitance sensor continuously monitors potassium nitrate level and feeds this information to a control unit. The system automatically adjusts the level by controlling the filling or draining process, eliminating manual intervention and enabling continuous, precise level maintenance without time loss.
Solution Approach 2:
The patent establishes a feedback loop where the capacitance sensor provides real-time level information to the control unit, which then adjusts the potassium nitrate level accordingly. This closed-loop control system ensures accurate and timely level management, replacing error-prone manual adjustment with automated feedback-based control.
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 module enables precise and automated detection of potassium nitrate levels, reducing manual intervention, minimizing deformation risks, and enhancing the efficiency and productivity of the glass strengthening process.
Implementation Method 1
a level detection means C, which is installed inside a glass strengthening furnace F, installed at a height equal to a level line of strengthening liquid to be filled in the strengthening furnace F, and generates an electrical signal having a set threshold or more or an electrical signal having the set threshold or less when it comes into contact with the strengthening liquid
Implementation Method 2
the level detection means C includes a measurement bar 200 for level detection that is installed at a height equal to the level of the strengthening liquid to be filled in the strengthening furnace F and is made of a conductor, and a resistance measurement module 201 that measures a resistance value between the measurement bar 200 for level detection and the strengthening furnace F
Data Source
AI summary
A potassium nitrate level detection sensing module M in a strengthening furnace according to the present invention includes a level detection means, which is installed inside a glass strengthening furnace, installed at a height equal to a level line of strengthening liquid to be filled in the strengthening furnace F, and generates an electrical signal having a set threshold or more or an electrical signal having the set threshold or less when it comes into contact with the strengthening liquid and detects that the strengthening liquid filled in the glass strengthening furnace F has reached a set strengthening liquid level line. The potassium nitrate level detection sensing module in the strengthening furnace according to the present invention having such a configuration can automatically identify that potassium nitrate in a liquid state, which is melted in the strengthening furnace, has reached the set level line in the strengthening furnace.