Fuel Cell Ship Duct Compartment Layout for Hazard Zone Containment
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Solution Overview
Problem
In fuel cell ships, the scattering of hazardous sites where electrical equipment cannot be arranged due to the presence of flammable fuel gas leads to a reduction in the degree of freedom for equipment arrangement, limiting the placement of electrical components.
Innovation Solution
The design includes a fuel cell ship with a fuel filling port located in a duct compartment, which houses a part of the fuel supply pipe, allowing for the concentration of hazardous sites and reducing the area where electrical equipment cannot be placed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hazardous sites are scattered throughout the ship, then safety is improved by distributing fuel gas pathways, but the hazardous location expands and the degree of freedom for arranging electrical equipment is reduced
Solution Approach 1:
The patent merges multiple hazardous sites (fuel supply pipe pathway, fuel filling port, and vent pipe outlet) into a single concentrated hazardous location (the duct compartment). This allows electrical equipment to be arranged freely in other areas of the ship while maintaining safety by isolating all fuel gas-related components within the enclosed duct compartment that can be properly ventilated and controlled.
2Adaptability or versatility
If electrical equipment is arranged around fuel gas pathways, then the degree of freedom for equipment arrangement is improved, but the risk of ignition of fuel gas increases
Solution Approach 1:
The patent segments the ship into hazardous and non-hazardous zones by enclosing all fuel gas pathways within the duct compartment. Electrical equipment can be arranged freely in non-hazardous zones away from the duct compartment, eliminating ignition risk while maintaining arrangement flexibility. The duct compartment acts as a isolated segment containing only fuel-related components.
3Ease of operation
If the fuel filling port is located outside the duct compartment, then accessibility for fuel filling is improved, but the hazardous location expands and electrical equipment arrangement freedom is reduced
Solution Approach 1:
The patent uses the duct compartment as an intermediary structure that provides a controlled interface for fuel filling operations. The fuel filling port is positioned within the duct compartment where it can access fuel from the fuel tank through the enclosed duct, while the vent pipe provides an external outlet. This intermediary arrangement contains the hazardous fuel transfer process within the duct compartment, preserving electrical equipment arrangement freedom elsewhere on the ship.
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 configuration narrows the hazardous location, increasing the freedom to arrange electrical equipment and enhancing safety by minimizing the risk of ignition from flammable gases.
Implementation Method 1
a fuel cell that generates electric power by an electrochemical reaction of fuel
Data Source
AI summary
A fuel cell ship includes a fuel cell that generates electric power by an electrochemical reaction of fuel, a propulsion device that generates propulsive force on a hull by electric power supplied from the fuel cell, a fuel supply pipe through which the fuel is supplied from a fuel tank housing the fuel to the fuel cell, a duct compartment that houses a part of the fuel supply pipe, a vent pipe that communicates with the duct compartment, and a fuel filling port that serves as an inlet for filling the fuel tank with the fuel. The fuel filling port is provided in the duct compartment.