Detachable Mooring Chain Layout for Fast Offshore Relocation
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Solution Overview
Problem
Conventional mooring systems for offshore structures are complex, time-consuming to install, and difficult to relocate quickly in emergency situations, posing risks of damage due to delayed maintenance and typhoons.
Innovation Solution
A detachable mooring system comprising a first and second tension adjuster, a mooring chain, and lead ropes, with manual and wireless control for easy installation and quick relocation, allowing for stable mooring and tension adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional mooring device with multiple links is used to secure an offshore structure, then the offshore structure can be securely moored, but the device complexity increases and relocation time increases
Solution Approach 1:
The mooring device is divided into separate functional modules: a first mooring device connected to the offshore structure and a second mooring device connected to the seabed. These modular segments can operate independently and are connected through a pulling chain, allowing for simplified connection/disconnection operations during relocation while maintaining secure mooring functionality.
Solution Approach 2:
A pulling chain acts as an intermediary element connecting the first mooring device to the second mooring device. This intermediary component enables force transmission and coordination between the two mooring devices without requiring direct complex interconnections, thereby reducing overall device complexity while maintaining mooring security.
2Reliability
If a conventional mooring device with multiple links is used, then the offshore structure can be securely moored, but the installation time and manpower requirements increase
Solution Approach 1:
By segmenting the mooring system into distinct first and second mooring devices that can be independently deployed and connected, the installation process becomes more manageable and time-efficient. Each segment can be installed separately before final connection, reducing the overall installation time compared to installing a single complex multi-link device.
Solution Approach 2:
The pulling chain and connection components are pre-configured and ready for rapid deployment. The modular design allows pre-assembly of connection elements, enabling faster on-site installation without requiring complex field assembly operations, thereby reducing installation time while maintaining secure mooring.
3Stability of the object's composition
If multiple links are connected to secure the offshore structure, then mooring stability is improved, but the relocation speed decreases due to time-consuming disconnection
Solution Approach 1:
The segmented design allows the pulling chain to be quickly released from either end to disconnect the mooring system. During relocation, the pulling chain can be rapidly disconnected from the first mooring device or second mooring device, enabling fast release of the offshore structure without requiring time-consuming disconnection of multiple interlinked components.
Solution Approach 2:
The mooring system incorporates dynamic release capabilities through the pulling chain mechanism that allows rapid transition from a locked/stable state during mooring to an unlocked/state during relocation. The tension adjusters and pulling chain enable quick adjustment and release, providing both stable mooring operation and fast relocation capability.
4Reliability
If a complex mooring device structure is used, then mooring reliability is improved, but the equipment and manpower requirements for relocation increase
Solution Approach 1:
The segmented mooring device structure with separate first and second mooring devices connected by a pulling chain simplifies relocation operations. Each segment can be independently managed and released, reducing the complexity of coordination required during relocation compared to a single complex device, while maintaining the reliability benefits of a distributed mooring system.
Data Source
AI summary
Proposed is a detachable mooring system for an offshore structure, including a first tension adjuster connected to an offshore structure, and blocking a pulling chain from proceeding from an outlet of a body toward an inlet, a second tension adjuster connected to one end of the pulling chain and blocking the pulling chain from proceeding from an outlet of a body toward an inlet, a mooring chain having a first longitudinal end connected to one surface of the second tension adjuster body and having a second longitudinal end connected to an anchor on the seabed, a first lead rope having one longitudinal end connected to one end of the pulling chain discharged out through the first tension adjuster outlet, and a second lead rope having one longitudinal end connected to the second tension adjuster body.