Gate Valve Sealing Face Recess for Abrasive Debris Flushing
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Solution Overview
Problem
Gate valves used in fracturing operations are prone to damage from abrasive frac fluids, leading to reduced lifespan and efficiency due to the accumulation of debris and foreign materials.
Innovation Solution
The gate valve design incorporates an arc-shaped recess on the sealing face surface of the gate member, which creates a spaced relationship with the seat end face, allowing fluid flow and washing off trapped debris, thereby reducing damage and extending the lifespan of the valve components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gate member sealing face is designed with a recess to create spacing from the seat end face, then debris removal and component lifespan are improved, but manufacturing complexity increases
Solution Approach 1:
The recess is introduced only at specific locations on the sealing face where debris accumulation occurs, rather than redesigning the entire sealing surface. This localized modification creates spacing channels that enable fluid flow for debris removal while maintaining the simplicity of the overall gate member structure.
Solution Approach 2:
The recess design extracts or removes trapped debris from the sealing interface by creating pathways for fluid flow. By taking out the harmful debris accumulation zones and replacing them with recess structures, the patent enables continuous cleaning action during valve operation.
2Productivity
If the recess is positioned to be spaced from the seat end face, then fluid flow and debris washing are enhanced, but sealing precision may be compromised
Solution Approach 1:
The recess is designed with specific dimensional characteristics (depth, width, positioning) that are optimized for debris removal functionality while maintaining sealing effectiveness. The local geometry of the recess is precisely controlled to achieve the dual purpose of debris extraction and sealing preservation.
Solution Approach 2:
The recess creates a spacing that is sufficient to allow fluid flow and debris removal, but not so large as to compromise sealing contact. The design uses partial spacing rather than complete separation, achieving the minimum necessary clearance for debris washing while maintaining adequate sealing pressure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances the durability and operational efficiency of gate valves by ensuring that the entire seat end face is exposed to fluid flow, effectively removing foreign materials and reducing wear, thus increasing the lifespan of both the seats and the gate member.
Implementation Method 1
allowing fluid flow and washing off trapped debris
Implementation Method 2
washing off trapped debris, thereby reducing damage and extending the lifespan of the valve components
Data Source
AI summary
A gate valve and gate member for a gate valve, which may be used for hydrocarbon well fracturing operations with a fracturing fluid, or “frac fluid”, includes a seat, having a seat end face which is in sliding contact with a gate member that has a sealing face surface with at least one recess formed in the sealing face surface of the gate member.