Vent Cap System for Suction Pile with Rotating Bottom Plate
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Solution Overview
Problem
Existing vent cap systems for suction piles face challenges in maintaining a seal in various orientations and require complex ROV operations, with limited ability to verify seal integrity and handle failures effectively.
Innovation Solution
A vent cap system comprising a top plate, center stem assembly, retainer assembly, bottom plate, flange assembly, and perimeter stem assemblies, allowing actuation between open and closed positions in any orientation, with a bottom alignment pin for seal verification and replaceable parts for easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional hinged vent cap is used, then the structure is simple, but it cannot maintain a reliable seal in various orientations and requires complex ROV operations
Solution Approach 1:
The vent cap system employs a dynamic bottom plate that can rotate about a stem assembly, allowing the plate to adapt to different orientations (horizontal, vertical, angled) while maintaining seal contact with the flange assembly. This dynamic adjustment capability enables reliable sealing across multiple orientations without requiring complex orientation-specific mechanisms.
Solution Approach 2:
The vent cap system is divided into separable components including the top plate, bottom plate, stem assembly, and flange assembly. This segmentation allows the bottom plate to be independently positioned and rotated to achieve proper alignment and sealing contact, while also enabling easier maintenance and replacement of individual components.
2Adaptability or versatility
If a fixed orientation vent cap is used, then the manufacturing is simpler, but it cannot operate in any orientation
Solution Approach 1:
The bottom plate's ability to rotate about the stem assembly provides orientation adaptability without requiring multiple fixed-orientation components. The single dynamic structure can assume various angular positions to match different installation orientations, simplifying manufacturing compared to producing multiple orientation-specific caps.
Solution Approach 2:
The vent cap system is designed as a universal component that can function in horizontal, vertical, and angled orientations through the bottom plate's rotational capability. This multi-functional design eliminates the need for orientation-specific variants, reducing manufacturing complexity while maximizing adaptability.
3Measurement precision
If alignment features are added for seal verification, then the seal integrity can be verified, but the device complexity increases
Solution Approach 1:
The bottom alignment pin provides an asymmetric feature on the bottom plate that engages with a corresponding feature on the flange assembly. This asymmetric alignment mechanism ensures precise positioning and seal contact without requiring complex verification systems, achieving accurate seal verification through simple geometric constraints.
4Ease of repair
If replaceable parts are implemented, then maintenance is easier, but the device complexity increases
Solution Approach 1:
The vent cap system is segmented into modular components (top plate, bottom plate, stem assembly, flange assembly) that can be independently removed and replaced. This segmentation enables easy maintenance of individual components without requiring replacement of the entire assembly, and the modular design manages complexity through standardized connection interfaces.
Solution Approach 2:
The design allows for selective replacement of worn or damaged components such as the bottom plate or stem assembly while retaining functional components. This selective replacement strategy simplifies maintenance operations and reduces waste, as only the necessary parts are discarded and replaced rather than the entire vent cap system.
Data Source
AI summary
A vent cap system includes a top plate, a center stem assembly, a retainer assembly attached to the top plate, a bottom plate, a flange assembly with a connection end for installation on a suction pile and a plurality of perimeter stem assemblies. The center stem assembly extends from the top plate, through threaded engagement to the retainer assembly, and to the bottom plate. Rotation of the center stem assembly moves the bottom plate between opened and closed positions, relative to the top plate and flange assembly. The perimeter stem assemblies hold the relative position of the top plate to the flange assembly, and the bottom plate seals against the flange assembly, when the system is in the closed position. The bottom plate has a bottom alignment pin to assure alignment of the bottom plate to the flange assembly for any orientation of the vent cap system.