Fuel Cell Ship Hydrogen Leak Detection for Ignition Risk Control
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Solution Overview
Problem
Existing fuel cell ships lack effective safety measures to mitigate risks associated with combustible fuels like hydrogen, particularly in preventing theft and ensuring safe operation.
Innovation Solution
A fuel cell ship equipped with compartments for fuel emission sources, including a first detector to monitor fuel concentration, which triggers the shutdown of non-explosion-proof devices when the concentration exceeds a threshold, enhancing safety by preventing fuel leakage and ignition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrogen is actively discharged from the hydrogen fuel tank to quickly deplete the fuel when the lid member is fraudulently opened, then fuel theft is prevented, but the safety risk from hydrogen leakage and potential ignition increases
Solution Approach 1:
The patent converts the harmful effect of hydrogen leakage into a beneficial safety mechanism by using the leaked hydrogen to trigger the detector, which then activates the ignition source to burn off the accumulated hydrogen safely, preventing explosion while maintaining theft deterrence
Solution Approach 2:
The system implements a feedback loop where the detector continuously monitors hydrogen concentration and provides feedback to the control unit, which adjusts the ignition source activation and ballast water discharge accordingly to maintain safety while preventing theft
2Reliability
If the concentration of fuel in the compartment increases to dangerous levels, then detection and response can prevent ignition, but the complexity of the safety monitoring system increases
Solution Approach 1:
The patent merges multiple safety functions into a single integrated control system that combines the detector, ignition source control, and ballast water discharge control into one unified safety monitoring unit, reducing overall system complexity while maintaining comprehensive protection
Solution Approach 2:
The control unit performs multiple functions including detecting hydrogen concentration, controlling the ignition source, managing ballast water discharge, and coordinating safety responses, making a single component serve multiple safety purposes to avoid the need for separate complex systems
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 system effectively reduces the risk of fuel-related hazards by detecting and responding to excessive fuel concentrations, thereby improving the safety and security of the fuel cell ship.
Implementation Method 1
a fuel cell that generates electric power through an electrochemical reaction of fuel
Implementation Method 2
a first detector arranged in the compartment to detect the fuel
Data Source
AI summary
An exemplary fuel cell ship is a fuel cell ship for propelling a hull by using electric power supplied from a fuel cell that generates electric power through an electrochemical reaction of fuel, and includes a compartment including an emission source of the fuel and a first detector arranged in the compartment to detect the fuel. If the first detector detects that a concentration of the fuel in the compartment is equal to or greater than a first threshold value, a power supply to a non-explosion-proof device in the compartment is stopped.