Handwheel Valve Locking Mechanism Against Unauthorized Operation
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Solution Overview
Problem
Conventional valves lack a locking function, allowing unauthorized individuals to arbitrarily manipulate the valve.
Innovation Solution
A valve with a locking function is designed, featuring a hand wheel, a locking operation member inserted into the hand wheel, and a fixing locking member. The valve is locked when the locking operation member combines with the fixing locking member and unlocked when they separate, preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional valve structure is used, then the structure is simple, but the valve can be arbitrarily manipulated by unauthorized persons
Solution Approach 1:
The locking mechanism is segmented into separate components: a locking operation member with locking projections and a fixing locking member with corresponding locking grooves. This segmentation allows the locking function to be added as a distinct module rather than integrating it into the entire valve structure, thereby improving security while minimizing overall structural complexity.
Solution Approach 2:
The locking operation member is inserted into a space within the hand wheel, creating a nested structure where the locking mechanism is housed inside the existing hand wheel component. This nesting approach adds the locking function without significantly increasing the external dimensions or overall complexity of the valve assembly.
2Reliability
If a locking mechanism is added to prevent unauthorized manipulation, then security is improved, but the device complexity increases
Solution Approach 1:
The locking operation member serves multiple functions: it acts as both a locking mechanism (when engaged with the fixing locking member) and as a normal operation component (when disengaged, allowing hand wheel rotation). This multi-functionality reduces the need for entirely separate locking components, thereby improving security while limiting the increase in device complexity.
Solution Approach 2:
The locking operation member combines the locking function with the hand wheel operation mechanism. By merging these functions into a single integrated component that can operate in both locked and unlocked modes, the patent reduces the number of separate components needed compared to having entirely independent locking and operation systems.
Data Source
AI summary
A valve comprises a hand wheel, a locking operation member inserted in a space of the hand wheel and a fixing locking member. The valve is locked when the locking operation member is combined with at least partial of the fixing locking member, the valve is unlocked when the locking operation member is separated from the fixing locking member, the locking operation member rotates in response to rotation of the hand wheel while the locking operation member is inserted in the hand wheel, and the fixing locking member is used for locking of the valve with fixed.