LNG Connector Clamping Modules for Rapid Emergency Disconnection
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Solution Overview
Problem
Existing LNG connector-disconnectors face challenges in emergency disconnection due to independent clamping modules, leading to potential blockages and safety issues, particularly in high-force and cold environments, where the required rapid disconnection time of two seconds is difficult to achieve.
Innovation Solution
A connection-disconnection device that integrates service and emergency disconnection functions into a single interface, using clamping modules that translate via grooves and ribs, allowing simultaneous and rapid release during emergency mode, with the weight of the hose and inclination of the connector-disconnector facilitating disconnection, and a third butterfly valve ensuring a double sealing barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If independent clamping modules are used for service connection-disconnection, then the device can provide robust clamping force, but the emergency disconnection time exceeds the required two seconds and blockages may occur
Solution Approach 1:
The patent merges the service connection-disconnection function and emergency disconnection function into a single integrated interface. The clamping modules are designed to perform both functions simultaneously, eliminating the need for separate mechanisms and reducing the time required for emergency disconnection while maintaining robust clamping capability.
Solution Approach 2:
The clamping modules are designed with dynamic characteristics that allow them to respond rapidly to emergency disconnection signals. The modules can transition from a locked clamping state to an unlocked state quickly when an emergency signal is received, enabling disconnection within the required two-second timeframe while maintaining reliable clamping during normal operation.
2Force
If multiple independent clamping modules are used, then the clamping force is sufficient, but the complexity of coordinating multiple modules for simultaneous release increases
Solution Approach 1:
Each clamping module is designed as a universal unit that performs both service clamping and emergency release functions. The modules share common control signals and mechanical characteristics, simplifying coordination. The first and second clamping modules are substantially identical in structure and function, allowing them to be controlled simultaneously by a single emergency disconnection signal without complex coordination requirements.
3Weight of moving object
If the connector-disconnector is designed to be compact and lightweight, then the device is easier to handle, but the structural integrity under high forces may be compromised
Solution Approach 1:
The connector-disconnector is segmented into multiple independent clamping modules distributed around the connection interface. This segmentation allows the device to maintain a compact and lightweight overall structure while each module contributes to the total clamping force. The modular design reduces the weight compared to a single large clamping mechanism while maintaining structural integrity through distributed force application.
Data Source
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AI summary
The invention relates to a connection-disconnection device comprising a first end fitting (4.1), a second end fitting (4.2) and several clamping modules (7), each of said modules being arranged to be applied at the rear of a flange (12) of the second end fitting (4.2) and to move away therefrom. Each module (7) is mounted such that it can move, in a second movement, from a retaining position, in which it can hold the end fittings (4.1, 4.2) against one another, into a disengaged position in which it can no longer do so.