Quick Coupler Assembly Dynamic Locking for Safety
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Solution Overview
Problem
Conventional quick coupler assemblies are unsafe as they can be detached during non-fluid blocking states, leading to potential accidents from high-pressure fluid release when pipes are carelessly disassembled or accidentally escape.
Innovation Solution
A quick coupler assembly design featuring a housing unit with an inlet and outlet mechanism, a control mechanism, and a quick release locking sleeve that ensures the pipe connector is securely locked during fluid flow, preventing accidental detachment and allowing safe disassembly by allowing fluid to escape through designated passages when transitioning states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the quick coupler assembly allows easy attachment and detachment of pipe connector, then the ease of operation is improved, but the safety deteriorates because the pipe can be accidentally detached during fluid flow
Solution Approach 1:
The locking mechanism dynamically changes its state based on fluid pressure. During fluid flow, the locking element is pushed outward by fluid pressure to engage with the pipe connector, preventing accidental detachment. When fluid flow stops, the locking element can be easily retracted to allow intentional detachment. This dynamic behavior resolves the contradiction by making the system both secure during operation and easy to detach when needed.
Solution Approach 2:
The system uses fluid pressure as feedback to control the locking mechanism. The fluid pressure automatically activates the locking element to engage the pipe connector during fluid flow, and the pressure release allows detachment. This feedback mechanism ensures safety during operation while maintaining ease of operation when fluid flow ceases, resolving the technical contradiction.
2Reliability
If the quick coupler assembly is designed to block fluid passage during connection, then the reliability is improved, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The system uses the fluid pressure itself to control the blocking and unblocking of the fluid passage. When fluid flows, the pressure automatically activates the locking element and controls the valve to block the passage. When fluid flow stops, the pressure release automatically allows detachment. This self-service mechanism eliminates the need for complex external control systems, achieving reliable fluid blocking without excessive device complexity.
Solution Approach 2:
The locking mechanism and fluid blocking function are merged into a single integrated system. The same fluid pressure that drives the locking element also controls the valve to block the fluid passage. This merging of functions reduces the number of separate control mechanisms needed, achieving reliable fluid blocking while minimizing device complexity.
3Reliability
If the locking element is designed to protrude inwardly to interlock with pipe connector, then the reliability is improved, but the ease of operation deteriorates because detachment becomes difficult during fluid flow
Solution Approach 1:
The locking element dynamically adjusts its position based on fluid pressure. During fluid flow, the locking element protrudes inwardly to strongly interlock with the pipe connector, ensuring reliability. When fluid flow stops and the operator intends to detach, the locking element can be easily retracted by applying force to the operating sleeve, which overrides the locking force. This dynamic behavior ensures strong locking during operation while maintaining ease of detachment when needed.
Solution Approach 2:
The system prepares for potential detachment by designing the locking element to be retractable through the operating sleeve. The operating sleeve is designed to override the locking force when pulled, allowing intentional detachment. This preliminary design consideration ensures that while the locking is strong during operation, detachment remains easy when the operator intends to disconnect, resolving the contradiction between locking strength and ease of detachment.
Data Source
AI summary
A quick coupler assembly includes inlet and outer valve parts axially spaced inside a housing unit. The inlet valve part has an inlet chamber. A quick release locking sleeve is sleeved on the housing unit to control locking elements for engaging/disengaging a pipe connector inserted into the outlet valve part. An inner slide sleeve sleeves around the inlet valve part in the housing unit and has a control chamber around the inlet valve part to communicate the inlet chamber through radial passage holes. An outer operating sleeve extends around the housing unit to move the inner slide sleeve relative to the inlet valve part, and is able to abut and immobilize the quick release locking sleeve during passage of fluid.