Ball-and-Socket Clapper Assembly for Valve Seat Alignment
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Solution Overview
Problem
Clapper valves in oil and gas operations experience significant wear due to vibrations from turbulent fluid flow and premature deterioration from improper alignment and excessive loading, which diminishes their effectiveness in controlling fluid flow directions.
Innovation Solution
A valve assembly with a valve body, hanger, and linkage assembly that allows a clapper to pivot between open and closed configurations, incorporating a ball-and-socket linkage for smooth movement and self-alignment with a valve seat, reducing wear and ensuring reliable sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clapper valve is designed to permit freedom of movement for self-alignment and sealing, then sealing effectiveness is improved, but wear of internal components increases due to relative movement during turbulent flow
Solution Approach 1:
The patent employs a spherical ball component that rotates within a cylindrical bore to achieve self-alignment and sealing. The spherical geometry allows the ball to naturally orient itself against the valve seat through rotational movement, ensuring effective sealing while distributing wear across the spherical surface rather than creating sliding friction between flat surfaces.
Solution Approach 2:
The patent replaces traditional hinged or pivoted clapper mechanisms with a ball rotation system. Instead of using mechanical hinges or pivots that create friction and wear points, the ball rotates freely within the cylindrical bore, eliminating complex mechanical linkages and reducing wear through pure rotational movement.
2Productivity
If traditional clapper valve designs are used, then fluid flow control is achieved, but significant wear occurs due to vibrations from turbulent flow
Solution Approach 1:
The spherical ball design allows turbulent flow-induced vibrations to be absorbed through rotational movement rather than creating linear wear. The ball can rotate to accommodate flow direction changes and vibrations, maintaining sealing effectiveness while significantly reducing wear on the valve components compared to traditional rigid clapper designs.
Solution Approach 2:
The patent changes the movement parameter from linear or hinged motion to rotational motion. This parameter change allows the valve component to respond dynamically to turbulent flow conditions through rotation, maintaining flow control capability while reducing the severity of wear through the rolling contact mechanism.
3Ease of operation
If traditional clapper valve designs are used, then fluid flow direction control is achieved, but improper alignment and excessive loading cause premature deterioration
Solution Approach 1:
The spherical ball automatically self-aligns within the cylindrical bore through its own weight and flow-induced movement, eliminating the need for external alignment mechanisms. The ball naturally positions itself against the valve seat to achieve proper sealing, and the design distributes loading evenly across the ball and seat contact surfaces, preventing excessive localized stress and premature deterioration.
Data Source
AI summary
A valve assembly includes a valve body defining an internal region, an inlet passageway, and an outlet passageway, wherein the inlet and outlet passageways fluidly communicate with the internal region. A valve seat is positioned within the internal region defining a fluid passageway. A hanger is connected to the valve body. A linkage assembly is pivotally and rotatably to the hanger and a valve member is pivotally connected to the hanger via the linkage assembly, wherein the valve member is movable between an open configuration, in which fluid flow is permitted through the fluid passageway, and a closed configuration, in which the valve member engages the valve seat to at least partially restrict fluid flow through the fluid passageway.