Port Crane Power Source Switching for Low-Carbon Cargo Handling
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Solution Overview
Problem
Existing container terminals face high costs and long-term disruptions in reducing carbon dioxide emissions due to the motorization of gantry cranes and laying trolley lines, making it difficult to implement effective emission reduction strategies.
Innovation Solution
A port cargo handling device equipped with a power generation mechanism that can switch between diesel and hydrogen fuel sources, utilizing a switching mechanism to seamlessly transition between power generation mechanisms, thereby reducing carbon dioxide emissions without disrupting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If gantry cranes are motorized and trolley lines are laid, then carbon dioxide emissions are reduced, but construction costs increase and terminal operations are disrupted for a long period
Solution Approach 1:
The patent applies dynamics by making the power generation mechanism changeable over time. The system allows switching between different power generation mechanisms (diesel-based and hydrogen-based) depending on availability and operational needs. This dynamic approach enables gradual transition without requiring complete replacement at once, thus avoiding long-term operational disruption while reducing emissions progressively.
Solution Approach 2:
The patent applies preliminary action by preparing multiple power generation mechanisms in advance. The hydrogen-based power generation mechanism can be prepared separately and then switched in when ready. This allows the terminal to maintain operational continuity during the transition period while progressively reducing emissions as cleaner power sources become available.
2Object-generated harmful factors
If gantry cranes are motorized and trolley lines are laid, then carbon dioxide emissions are reduced, but construction costs increase
Solution Approach 1:
The patent applies segmentation by dividing the power generation system into separate, interchangeable modules. Instead of requiring a complete infrastructure overhaul with trolley lines, the system segments power generation into discrete units (diesel-based and hydrogen-based) that can be independently installed, operated, and switched between. This modular approach significantly reduces construction costs while achieving emission reduction goals.
Solution Approach 2:
The patent applies universality by designing a common cable connection system that can accept different power generation mechanisms. The same cable infrastructure and control system can work with both diesel-based and hydrogen-based power generation units, making the system multi-functional and adaptable. This eliminates the need for separate infrastructure for different fuel types, reducing overall construction costs.
3Object-generated harmful factors
If power generation mechanism is switched from diesel to hydrogen, then carbon dioxide emissions are reduced, but system complexity increases due to switching mechanism
Solution Approach 1:
The patent applies the intermediary principle by using a cable as a common interface between different power generation mechanisms and the inverter. The cable acts as an intermediary that standardizes the connection, allowing different fuel types to be switched without requiring complex reconfiguration of the entire electrical system. This simplifies the switching mechanism compared to direct hardwired connections.
Solution Approach 2:
The patent applies feedback through the controller that monitors the operational status of different power generation mechanisms and automatically manages the switching process. The controller receives feedback from sensors and system status, then intelligently decides when and how to switch between diesel-based and hydrogen-based power generation, reducing the complexity of manual switching operations.
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 solution allows for a gradual fuel switch from diesel to hydrogen, maintaining continuous cargo handling operations and significantly reducing carbon dioxide emissions at container terminals.
Implementation Method 1
a first power generation mechanism (9a) using diesel oil as its fuel; A second power generation mechanism (9b) having hydrogen as its fuel
Implementation Method 2
a storage battery (10) connected to the cable (11)
Implementation Method 3
an inverter (8) supplied with the electricity from the power generation mechanism (9)
Data Source
AI summary
Provided is a port cargo handling device capable of reducing the carbon dioxide emissions at a container terminal and a method of controlling the same. A power generation mechanism 9 and an inverter 8 are connected by a cable 11 that carries DC electricity, and a storage battery 10 is connected to the cable 11. The power generation mechanism 9 is switched from a first power generation mechanism 9a to a second power generation mechanism 9b by disconnecting the first power generation mechanism 9a from the cable 11 and connecting the second power generation mechanism 9b to the cable 11, the first power generation mechanism 9a being mounted as the power generation mechanism 9 on the port cargo handling device, the second power generation mechanism 9b having a fuel different from that of the first power generation mechanism 9a.