Area Valve Service Unit With Flexible Access for Local Isolation
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Solution Overview
Problem
There is a need for an area valve service unit (AVSU) that enables easy and local isolation of individual portions or subsystems of a gas and vacuum system, particularly for medical applications, to facilitate installation, maintenance, and emergency shutdowns.
Innovation Solution
The AVSU includes a cabinet with movable access panels, shutoff valves, and flexible cover plates, allowing independent access and manipulation of valves without removing handwheels, along with clamping mechanisms to organize pipes for a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access panel door is made fixed and securely attached, then the safety and security of the valve components are improved, but the ease of access for maintenance and emergency operations deteriorates
Solution Approach 1:
The access panel door is designed to be dynamically reconfigurable, transitioning between a fixed secured state during normal operation and a removable accessible state during maintenance or emergencies. The door can be detached from the access panel when needed, allowing operators to access valve components without permanent fixtures or complex locking mechanisms.
2Reliability
If the cover plate is made rigid and firmly mounted, then the protection of internal components is improved, but the ease of accessing components behind it deteriorates
Solution Approach 1:
The cover plate is designed with flexible properties, allowing it to be bent or deformed to access components behind it without complete removal. This flexible cover plate maintains protection during normal operation while enabling easy access when needed, eliminating the need to remove the handwheel or fully detach the cover plate.
3Loss of information
If multiple pipes are routed separately through the cabinet, then the clarity of fluid flow paths is improved, but the device size and complexity deteriorates
Solution Approach 1:
Multiple pipes are routed together in bundles or groups through the cabinet structure, with clear labeling and organization to maintain identification of individual flow paths. This merging approach reduces the overall space required compared to completely separate routing while maintaining clarity through systematic arrangement and labeling of the bundled pipes.
4Ease of operation
If the handwheel is made large and prominent, then the ease of valve operation is improved, but the space required for valve components deteriorates
Solution Approach 1:
The handwheel is positioned to extend through the access panel door, utilizing the depth dimension of the cabinet rather than occupying additional lateral space. This allows the handwheel to remain large and easy to operate while maintaining a compact cabinet footprint, as the handwheel's operational space is drawn from the internal depth of the cabinet structure.
Data Source
AI summary
A gas and vacuum system is disclosed, and, in particular, an area valve service unit configured to provide local isolation of individual parts of a gas and vacuum system that may be required for installation, maintenance, or in the event of an emergency. The area valve service unit can have one or more shutoff valves, each of which has an associated access panel with a movable access panel door.