Swing Bolt Splash Shield for Pressure Vessel Safety
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Solution Overview
Problem
Pressure vessels with removable closures can experience hazardous leaks of pressurized fluid due to seal failures or incomplete depressurization, posing risks to operators during maintenance or filter replacement.
Innovation Solution
The pressure vessel closure features a flange with cutouts for swing bolts and flow shields that redirect escaping fluid away from the operator, ensuring safe fluid direction and protection during lid removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the closure is secured with fasteners such as bolts or toggle clamps, then the closure can be removed for access to filter elements, but residual pressurized fluid can escape between the flange and undersurface of the cover plate creating a hazard to the operator
Solution Approach 1:
A bleed valve is introduced as an intermediary component between the pressure vessel interior and the exterior environment. This valve allows controlled release of residual pressurized fluid before the closure is fully removed, preventing uncontrolled escaping fluid that would hazard the operator. The bleed valve serves as a mediator that safely manages the pressure transition.
Solution Approach 2:
The bleed valve is activated in advance before the operator removes the closure or lid. By opening the bleed valve first, residual pressurized fluid is released beforehand, ensuring that when the fasteners are loosened and the closure is removed, there is no longer dangerous pressure differential causing fluid to escape between the flange and cover plate.
2Object-affected harmful factors
If the closure seal leaks, then fluid can escape under pressure, but providing additional shielding increases device complexity
Solution Approach 1:
Flow shields are introduced as intermediary protective elements positioned between the potential fluid escape paths (seal interface and swing bolt cutouts) and the operator. These shields intercept and redirect escaping fluid away from the operator without requiring fundamental changes to the closure sealing mechanism itself.
Solution Approach 2:
The flow shields extend in a new spatial dimension - they project outward from the closure surface to create a three-dimensional protective barrier. This dimensional addition allows the shields to intercept fluid escaping in various directions without interfering with the two-dimensional sealing interface between the flange and cover plate.
3Ease of operation
If swing bolts with cutouts are used for quick release, then ease of operation improves, but fluid can escape through the cutouts creating hazards
Solution Approach 1:
The flow shields provide localized protection specifically at the swing bolt cutout regions where fluid escape would directly hazard the operator. Rather than modifying the entire closure structure or the swing bolts themselves, the shields are applied locally at the specific problem areas to redirect escaping fluid away from dangerous zones.
Data Source
AI summary
A cover is provided for a removable pressure vessel lid and the cover has a peripheral flange extending over the interface of the lid and pressure vessel to direct escaping pressurized fluid away from the operator in the event of a seal leak or residual pressure upon release of the lid fasteners. The fasteners such as swing bolts engage slots in the lid flange; and, flow shields are provided on the fasteners to redirect fluid escaping at the slots and about the fasteners.