Gas Supply Reversing Unit with Temperature Compensation
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Solution Overview
Problem
Existing gas supply systems face challenges in accurately estimating gas remaining in sources due to ambient temperature variations, leading to errors in pressure measurement and increased costs for frequent calibration of leak detectors along long pipelines.
Innovation Solution
Incorporating an ambient temperature sensor and an electronic data processing unit that calculates corrected gas pressure variations, accounting for temperature fluctuations, and detecting leaks through a gas consumption sensor, which generates alerts for pressure deviations not attributed to consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure sensors are installed to monitor gas pressure in source cylinders, then gas supply continuity can be ensured, but measurement precision deteriorates due to ambient temperature variations causing significant errors in pressure estimation
Solution Approach 1:
The patent applies parameter changes by introducing temperature compensation to correct the pressure measurement parameter. The electronic unit receives both pressure and temperature signals, then calculates a corrected pressure value that accounts for thermal expansion effects. This transforms the raw pressure measurement into a compensated parameter that reflects actual gas mass rather than temperature-influenced pressure, thereby resolving the measurement precision deterioration while maintaining supply continuity monitoring.
2Reliability
If external gas detectors are installed along the pipeline to detect leaks, then leak detection capability is improved, but device complexity and cost increase significantly due to multiple detectors required for long pipelines
Solution Approach 1:
The patent extracts the leak detection function from multiple distributed external detectors and consolidates it into a single monitoring point at the source cylinder. By measuring pressure variation at the source and comparing it against expected consumption patterns, the system achieves leak detection without requiring multiple detectors along the pipeline, thereby reducing device complexity while maintaining detection capability.
Solution Approach 2:
The system implements feedback by continuously monitoring pressure at the source cylinder and comparing actual pressure variation against expected variation based on gas consumption. When deviations exceed thresholds, the system generates alerts indicating potential leaks. This feedback mechanism enables leak detection with a single sensor rather than multiple distributed detectors, simplifying the overall system architecture.
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 solution ensures accurate gas supply continuity, reduces errors in pressure estimation, and minimizes the need for frequent detector calibration, thereby lowering costs and enhancing leak detection reliability.
Implementation Method 1
the higher the ambient temperature, the more the pressure in the unused source cylinders tends to increase
Implementation Method 2
a pressure sensor measuring the gas pressure at the outlet and/or at least one inlet of the central reversing unit
Data Source
Figure 1
AI summary
Gas supply device comprising a reversing unit (2), the reversing unit (2) comprising two inlets intended to be connected respectively to two separate sources (4, 5) of pressurized gas and an outlet intended to be connected to a user device (3), the reversing unit (2) comprising an automatic and/or manual switching mechanism for switching the gas supply to the user device (3) from one source (4) or the other (5) source in order to ensure continuity of supply, the device comprising a pressure sensor (6) measuring the gas pressure at the outlet and/or at least one inlet of the reversing unit (2), characterized in that the device comprises an ambient temperature sensor (7) and an electronic data storage and processing device (8),the electronic data storage and processing unit (8) receiving the measurement from the ambient temperature sensor (7) and the measurement from the pressure sensor (6) and being configured to calculate, from these pressure and ambient temperature measurements, the corrected gas pressure variation that is not due to the ambient temperature variation,