Mechanical Flow Counter Blockage Detection via Temperature Differential
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Solution Overview
Problem
Mechanical water meters often become blocked due to impurities, leading to unrecorded water consumption and difficulties in distinguishing between blockages and absent users, resulting in billing losses and the need for costly replacements with static meters.
Innovation Solution
A device that measures the temperature difference between the fluid and the environment, in conjunction with flow rate data, to detect blockages by identifying abnormal temperature changes when no flow is indicated, with the option to display or transmit 'blocked meter' information when the temperature difference exceeds a threshold and flow rate is zero.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mechanical meters are used, then cost is reduced compared to static meters, but reliability deteriorates due to blockages from impurities
Solution Approach 1:
The device performs preliminary detection of blockages by monitoring temperature differences before complete meter failure occurs. The temperature sensor detects abnormal heat accumulation in the meter body caused by blocked fluid flow, enabling early warning and preventive maintenance before the meter becomes completely inoperative.
Solution Approach 2:
The patent introduces an intermediary detection system (temperature sensor and analysis device) that indirectly monitors the meter's operational state. Instead of directly detecting blockages in the mechanical components, the system uses temperature as an intermediary parameter that reflects the meter's flow status, enabling non-invasive monitoring.
2Reliability
If temperature difference monitoring is added to detect blockages, then reliability is improved, but device complexity increases
Solution Approach 1:
The meter system performs self-diagnosis by incorporating a temperature sensor that automatically monitors its own operational state. The analysis device processes the temperature data and compares it against threshold values, enabling the meter to self-detect blockages without requiring external monitoring equipment or complex diagnostic systems.
Solution Approach 2:
The invention monitors changes in the temperature parameter of the meter body to detect blockages. By tracking the temperature difference between the meter body and ambient environment, and comparing it against predetermined thresholds, the system transforms a simple temperature measurement into a reliable blockage detection mechanism without requiring complex analysis.
3Loss of information
If blockage detection is implemented, then loss of information is reduced by distinguishing blockages from absent users, but manufacturing cost increases
Solution Approach 1:
The patent employs a cost-effective temperature sensor and simple comparison logic that can be manufactured at low cost. The detection device uses basic thermal sensing components and straightforward threshold-based analysis, avoiding expensive sophisticated sensors or complex processing units, thereby maintaining economic viability while enabling accurate blockage detection.
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
Enhances the reliability of mechanical meters by accurately identifying blockages, reducing billing errors and facilitating replacements while maintaining a lower cost compared to static meters, and allows for remote notification of issues.
Implementation Method 1
a temperature sensor (3) for the temperature of the fluid or meter body
Implementation Method 2
means for analyzing the temperature difference (Δθ) between the temperature of the fluid and the ambient temperature
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a mechanical fluid meter, for liquid or gas, comprising an electronic device (E) that has means for metering, and generally also displaying, consumption, said fluid meter including: at least one fluid temperature sensor (3) near the meter and at least one ambient temperature sensor (4) where the meter is installed; a connection means between the temperature sensors (3, 4) and the electronic device (E); and analysis means (5) for establishing the temperature difference (??) between the fluid temperature and the ambient temperature and for taking into account the fluid flow rate value supplied by the meter, said analysis means being programmed so as to display and/or transmit information indicating a meter blockage when the temperature difference (??) is higher than a predetermined limit and the flow rate value supplied by the meter is zero.