Double-Wall Process Unit for Hazardous Leak Detection
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Solution Overview
Problem
Existing hazardous material handling systems face challenges in efficient leakage detection, space utilization, and access to control structures, leading to delayed detection of leaks and increased safety risks due to large ventilated volumes.
Innovation Solution
A process unit with an inner and outer passage configuration, where the outer passage detects and potentially vents hazardous material leaks, reducing the risk of ambient pollution by ensuring leaks are detected and removed through the outer passage before reaching the environment, and allowing for more compact design and convenient access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large ventilated volume is provided surrounding the valve structure, then leakage detection capability is improved, but the detection time increases and space is wasted
Solution Approach 1:
The patent divides the ventilated volume into two distinct chambers: a first ventilated volume surrounding the valve body and a second ventilated volume surrounding the actuator. This segmentation allows for localized leak detection closer to the hazard source, reducing detection time while maintaining comprehensive monitoring coverage.
Solution Approach 2:
The patent introduces a spatial dimension by creating separate ventilated volumes at different locations along the valve structure. Sensors are distributed across these volumes, enabling three-dimensional leak detection coverage that reduces detection time compared to a single large ventilated volume.
2Reliability
If a large ventilated volume is provided surrounding the valve structure, then leakage detection capability is improved, but space utilization is reduced and access is complicated
Solution Approach 1:
The patent segments the ventilated volume into multiple smaller chambers (first and second ventilated volumes) that are distributed along the valve structure. This segmentation reduces the total space required compared to a single large ventilated volume while maintaining effective leak detection capability.
Solution Approach 2:
The patent nests the first ventilated volume and second ventilated volume within the overall valve assembly structure. The control structure is positioned within these ventilated volumes, creating a compact integrated design that improves space utilization while preserving leak detection functionality.
3Ease of operation
If control structures are placed in direct communication with hazardous material, then process control is improved, but leakage risk increases
Solution Approach 1:
The patent introduces ventilated volumes as intermediary zones between the hazardous material and the control structure. These ventilated volumes act as buffer spaces that allow sensors to detect leaks before they reach the actuator, maintaining process control capability while reducing leakage risk to the actuator.
Solution Approach 2:
The patent provides beforehand cushioning by creating ventilated volumes that serve as protective barriers. These volumes are positioned to intercept and detect hazardous material leaks before they can reach the control structure, providing advance warning and protection similar to a cushioning effect.
Data Source
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AI summary
A process unit for hazardous material, the process unit comprising an inner wall extending between a proximal inner flange and a distal inner flange and defining an inner passage for transport of the hazardous material and a process control structure configured for interaction with the hazardous material in the inner passage. To ensure detection of leaking hazardous material, the unit comprises an outer wall extending about the inner wall between a proximal outer flange and a distal outer flange and defining an outer passage between the inner wall and the outer wall. A control passage may be arranged to extend between the inner wall and the outer wall and at least partly housing the process control structure.