Flanged Pipe Deflector Shield to Prevent Rotation During Leaks
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Solution Overview
Problem
Existing safety deflector shields for bolted flanged pipe connections are inadequate in preventing fluid spray from leaking in unintended directions, particularly failing to secure the deflector housing in place during fluid leakage events.
Innovation Solution
A uniquely configured deflector shield apparatus with a housing that includes a front, rear, and top wall, secured by guard bolts and nuts to prevent rotation and separation from the flanged pipe coupling, diverting fluid leakage in a selected direction using a u-shaped design and reinforcing plates to attach to flange bolts, made from materials like 300 series stainless steel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing safety deflector shields are used for bolted flanged pipe connections, then they provide basic spray deflection, but they fail to prevent rotation and separation of the deflector housing during fluid leakage events
Solution Approach 1:
The attachment mechanism is segmented into multiple independent components: guard bolts that prevent separation, nuts that prevent rotation, and reinforcing plates that distribute loads. Each component addresses a specific failure mode, collectively ensuring reliable attachment without requiring a single complex mechanism.
Solution Approach 2:
The guard bolts and nuts are pre-installed on the flanged pipe connection before the deflector housing is attached. This preliminary action ensures that the attachment mechanism is ready to immediately prevent rotation and separation during fluid leakage events, enhancing reliability without adding operational complexity.
2Reliability
If the deflector housing is made secure with multiple fastening components, then rotation and separation are prevented, but the installation and assembly process becomes more complex
Solution Approach 1:
The fastening system is divided into separate functional components: guard bolts for preventing separation, nuts for preventing rotation, and reinforcing plates for structural support. This segmentation allows each component to be installed independently in a logical sequence, simplifying the overall installation process despite the multiple components involved.
Solution Approach 2:
Reinforcing plates serve as intermediaries between the deflector housing and the flanged pipe connection. These plates distribute the attachment forces across a larger area, reducing stress concentrations and making the attachment process more forgiving and easier to execute correctly during installation.
3Device complexity
If standard deflector shields are used without additional securing mechanisms, then the device complexity remains low, but the deflector housing can rotate or separate during high-pressure fluid leakage
Solution Approach 1:
The guard bolts and nuts are installed in advance to create preliminary anti-action forces that counteract the separating and rotating forces generated during high-pressure fluid leakage. This preemptive measure ensures that even under extreme leakage conditions, the deflector housing remains securely positioned, preventing uncontrolled spray direction.
Solution Approach 2:
The deflector housing features a curved, U-shaped design that naturally channels fluid spray in a controlled direction. This geometric feature works in conjunction with the securing mechanisms to ensure that even if some movement occurs, the fluid flow is still directed away from personnel and equipment.
Data Source
AI summary
Apparatus and method for shielding leakage from a flanged pipe coupling comprising: a housing having a front wall, a rear wall, and a top wall, the top wall depending downwardly to form side walls intermediate the front and rear walls thus forming a closure having a bottom which is open; wherein the housing contains an interior space in between the front and rear wall and below the top wall, the interior space shaped to fit around a flanged pipe coupling; and wherein the housing is shaped so as to prevent rotation of the apparatus with respect to the flanged pipe coupling.