Fuel Tank Product ID Sensing for Cross-Contamination Prevention
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Solution Overview
Problem
Conventional methods for loading and unloading fuel products into distribution tanks lack effective mechanisms to prevent cross-contamination of different liquid fuels, leading to costly mistakes due to the reliance on human operators for segregation.
Innovation Solution
A crossover protection system mounted on product transport vehicles, incorporating a system controller, fluid property sensors, valves, and tank tag readers to automatically prevent the mixing of dissimilar liquid products by verifying the type of fuel through sensors and tags, ensuring only matching fuels are loaded or unloaded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual operator monitoring is used to prevent cross-contamination, then operational flexibility is maintained, but reliability of preventing mixing is insufficient
Solution Approach 1:
The system enables automatic self-verification by reading product IDs from both the transport vehicle and distribution tank, automatically comparing them, and controlling valve operation without requiring manual operator intervention for verification, thereby improving reliability while maintaining manageable complexity
Solution Approach 2:
The system implements feedback control by continuously monitoring product ID matches between source and destination tanks and using this information to automatically control valve states, ensuring that valves only open when product types match, thus reliably preventing cross-contamination
2Reliability
If automated sensor verification is implemented, then reliability of preventing cross-contamination is improved, but device complexity increases
Solution Approach 1:
The system uses multi-functional components where fluid property sensors serve both product identification and verification functions, and the controller integrates multiple tasks including reading product IDs, comparing them, controlling valves, and providing user feedback, thereby reducing overall system complexity while maintaining high reliability
Solution Approach 2:
The system introduces a controller as an intermediary that mediates between the sensors, valves, and user interface, centralizing the complex logic of product verification and valve control in a single component, which manages system complexity while ensuring reliable cross-contamination prevention
3Reliability
If product verification is performed before transfer, then cross-contamination is prevented, but productivity is reduced due to additional verification steps
Solution Approach 1:
The system performs product verification in advance by reading and storing product IDs from both the transport vehicle and distribution tank before initiating any product transfer, and only allows transfer operations when verification confirms matching product types, thereby preventing cross-contamination while enabling efficient approved transfers
Solution Approach 2:
The system maintains continuous operational capability by quickly performing automated verification and immediately enabling product transfer when matches are confirmed, minimizing idle time and ensuring that verified product transfers can proceed without interruption, thus balancing reliability with productivity
4Measurement precision
If manual verification methods are used, then ease of operation is maintained, but measurement precision of product identification is insufficient
Solution Approach 1:
The system replaces manual visual verification and manual record-keeping with automated electronic product ID sensors and digital comparison logic, dramatically improving product identification accuracy by eliminating human error while the controller manages complexity to maintain ease of operation through automatic control
Data Source
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Figure 3A~3B
AI summary
A crossover protection system including a product transport vehicle (15) having a tank compartment (25) for containing a liquid product, a fluid property sensor (130) positioned to contact liquid product stored in the tank compartment (25), a system controller (70), and a valve (45) coupled to the tank compartment (25). The valve (45) regulates a flow of liquid product from the tank compartment (25) and has a normally locked state. The system controller (701) may compare a received transported liquid type signal from the fuel property sensor (130) indicative of the type of liquid product in the tank compartment (25) and compare the type of liquid product to a stored liquid product type. If the two types match, the crossover protection controller (70) transitions the valve (45) to an unlocked state to allow the liquid product to unload from the tank compartment (25). If the two types do not match, the crossover protection controller will disable the valve (45) from transitioning to the unlocked state.