Calibrated Float Phase Separation Detection in Fuel Tanks
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Solution Overview
Problem
Gasoline storage tanks face challenges in detecting phase separation and water ingress, which can lead to the pumping of contaminated fuel, causing engine failure and damage, as existing methods lack effective monitoring for fluid density differentials and rate of change.
Innovation Solution
A system utilizing calibrated floats with specific densities to detect fluid density differentials and rate of change, sending signals when thresholds are exceeded, with a controller issuing notifications for corrective action to prevent contamination from reaching dispenser pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional monitoring methods are used in storage tanks, then the system is simple and easy to operate, but phase separation and water ingress cannot be effectively detected
Solution Approach 1:
The detection system is segmented into multiple independent float sensors, each calibrated to detect specific fluid densities. This allows the complex task of monitoring multiple fluid layers (gasoline/ethanol blend, phase-separated fluid, water) to be divided into simpler individual detection tasks, improving measurement precision without requiring a single overly complex device
Solution Approach 2:
Float sensors serve as intermediary elements that translate fluid density changes into detectable signals. These floats with specific densities act as mediators between the invisible phase separation process and the monitoring system, enabling accurate detection of fluid density differentials and rate of change
2Reliability
If multiple float sensors are deployed to monitor different fluid densities, then detection capability improves, but device complexity increases
Solution Approach 1:
Multiple float sensors with different densities are deployed to perform the same basic function (detecting fluid interfaces) but针对不同 fluid densities. Each float is universally designed to detect its specific fluid layer, and collectively they provide comprehensive monitoring of all fluid layers, improving reliability through redundant detection capabilities
Solution Approach 2:
The system incorporates continuous feedback from multiple float sensors that monitor fluid density differentials and rate of change. This feedback mechanism allows the system to detect phase separation and water ingress in real-time, improving monitoring reliability by providing ongoing verification rather than single-point checks
3Measurement precision
If float sensors are used to detect fluid density differentials, then phase separation detection accuracy improves, but the system becomes more sensitive to fluid level changes
Solution Approach 1:
The system monitors changes in fluid density parameters over time rather than static density values. By detecting rate of change in fluid density differentials, the system can distinguish between normal fluid level fluctuations and actual phase separation events, improving detection accuracy while reducing false alarms caused by transient level changes
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
Effectively monitors and alerts for phase separation and water ingress, preventing contaminated fuel from being dispensed, thereby reducing engine failures and damage by ensuring accurate fluid level and rate monitoring within storage tanks.
Implementation Method 1
The float is buoyant on a relatively more dense lower layer of fluid such as phase separated fuel or pure water, while remaining submerged in a relatively less dense upper layer of fluid such as E-10 fuel
Data Source
AI summary
A system and method for detecting phase separation in storage tanks is provided. At least one float has a density calibrated to detect a density differential among surrounding fluids. The float is buoyant on a relatively more dense lower layer of fluid such as phase separated fuel or pure water, while remaining submerged in a relatively less dense upper layer of fluid such as a gasoline/ethanol blend. A detection device sends a signal when the float rises or falls above or below a preset acceptable level.