Subsea Clamp Pivot Release Mechanism
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Solution Overview
Problem
The removal of clamps used to join subsea connecting elements, such as end caps and hubs, is a time-consuming and cumbersome process requiring specialized tools and complex procedures, including the use of Remotely Operated Vehicles (ROVs) for retrieval and release.
Innovation Solution
A clamp design featuring a pivot arrangement and locking device that allows for simplified release using standard ROV tools, reducing the need for specialized tools and minimizing the number of actions required for removal, with an actuating device that transitions the locking device between locking and release positions without releasing tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional clamp designs are used for joining subsea connecting elements, then secure engagement is achieved, but the removal process becomes time-consuming and requires specialized tools
Solution Approach 1:
The clamp is divided into first and second clamp elements that can be separated from each other through the pivot arrangement, allowing the clamp to be opened into two halves for easy removal from the connecting elements without requiring specialized extraction tools
Solution Approach 2:
The pivot arrangement enables dynamic transformation of the clamp from a closed engaged state to an open released state by allowing the clamp elements to rotate relative to each other, facilitating quick release operations
2Productivity
If traditional clamp release procedures are used, then the clamp can be released, but multiple specialized tools and complex procedures are required
Solution Approach 1:
The actuating device is pre-configured to directly operate the locking device through the pivot arrangement, so that when activation is required, the release mechanism is already in position and can be operated with a single tool without requiring multiple sequential operations
Solution Approach 2:
The actuating device serves multiple functions: it activates the locking device, operates the pivot arrangement, and enables release of both clamp elements simultaneously, allowing a single standard ROV tool to perform what previously required multiple specialized tools
3Ease of operation
If specialized tools are used for each individual operation, then precise control is achieved, but investment and maintenance costs increase
Solution Approach 1:
The actuating device is designed to perform multiple operations (activating locking, operating pivot, releasing clamp elements) with a single interface that can be operated by standard ROV tools, eliminating the need for multiple specialized tools while maintaining precise control over the release sequence
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
Facilitates faster and easier removal of clamps from their installed position by allowing standard ROV tools to operate the clamp, reducing the complexity and time needed for retrieval and release, while maintaining secure engagement during use.
Implementation Method 1
The pivot arrangement may comprise one hinge arrangement or two hinge arrangements and a further clamp element
Data Source
AI summary
The invention concerns a clamp (1) for joining two connecting elements (2, 3) with abutting faces oriented transverse to a centre axis of the connecting elements. The clamp comprises a first and a second clamp element (4, 5) which are connected to each other by a pivot arrangement (6) and arranged for positioning around an area where the two connecting elements are to be joined. The clamp is provided with a locking device (9) to secure the connecting elements together when used, and the clamp is provided with an actuating device (10) which is arranged to actuate the locking device in between a locking position and a release position. The invention also concerns methods for releasing a clamp.