Deepwater Valve Actuator Coupling for ROV Replacement Access
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Solution Overview
Problem
Current deep-sea valve actuators are not easily replaceable and lack a standardized interface for removal and installation, making them difficult to access and replace, especially at greater depths, and they cannot be efficiently operated by remotely operated underwater vehicles (ROVs).
Innovation Solution
A kit comprising a deep-sea valve actuator and a tool with a rotatable connecting sleeve and locking mechanism that allows for detachable coupling and decoupling, enabling easy replacement and installation using an ROV, with features like axial movement-blocking projections, locking levers, and a modular design to facilitate rotational movements and prevent over-rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If valve actuators are installed close together in a valve rack on a well, then space utilization is improved, but accessibility for installation and maintenance deteriorates
Solution Approach 1:
The valve actuator is divided into modular components that can be independently handled and installed. The actuator can be detached into separate parts for easier manipulation by ROV through limited access, while maintaining compact installation when assembled.
2Area of stationary object
If valve actuators are mounted horizontally on a valve rack, then installation space is optimized, but removal and installation by ROV becomes impossible
Solution Approach 1:
A standardized coupling interface acts as an intermediary between the valve actuator and the valve body. This interface includes standardized projections and recesses that enable ROV-manipulated tools to grasp and manipulate the actuator for removal and installation, even through limited access.
3Adaptability or versatility
If valve actuators lack a standardized interface, then design flexibility is maintained, but replacement efficiency and reliability deteriorate
Solution Approach 1:
The valve actuator incorporates a standardized coupling interface that serves multiple functions: mechanical connection to the valve body, alignment during installation, and engagement with ROV manipulation tools. This universal interface enables efficient replacement while maintaining design flexibility for different actuator models.
4Ease of operation
If valve actuators are accessed by divers or complete lifting, then replacement is possible, but operation complexity and risk increase
Solution Approach 1:
The patent replaces complex manual operations (diver manipulation, complete lifting) with a simplified mechanical interface that can be manipulated by ROV through limited access. The standardized coupling interface with projections and recesses allows straightforward engagement and disengagement without requiring complex manipulation procedures.
Data Source
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AI summary
The invention relates to a kit (1) comprising a deep-sea valve actuator (2) and a tool (3), wherein the tool (3) has a tool holder (4) with a coupling sleeve (5) that is axially fixed at least in one direction but rotatably mounted thereon, wherein the deep-sea valve actuator (2) has a first end (6) prepared for detachable coupling to a deep-sea valve (7), wherein the deep-sea valve actuator (2) has an actuator (8) surrounded by a connecting sleeve (9) rotatable relative to it, wherein the connecting sleeve (9) has at least one axial movement blocking projection (10) on the side of the first end (6) prepared for engaging behind a projection (11) of a valve, and the actuator (8) has a pin (12) for bearing against the projection (11) of the valve in a manner that prevents rotation, wherein the deep-sea valve actuator (2) has a second end (13), which is intended for detachable coupling to the tool (3),wherein the connecting sleeve (9) has a recess (14) for receiving a locking lever (15) of the coupling sleeve (5), by means of which a rotational movement of the connecting sleeve (9) can be effected, and the actuator (8) has a radial projection (16) which bears against an axial projection (17) of the tool holder (4), wherein the locking lever (15) is prepared to move the connecting sleeve (9) into a rear-engaged unlocking/removal position when the actuator (8) is held in its initial position by the axial projection (17). The invention also relates to a method for coupling and a method for decoupling.