Annular Hub Clamp With Fastlock Segments for Faster Rig Connections
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing method of connecting two hubs using C-shaped clamps and bolts on a drilling rig is hazardous and time-consuming due to the need for manual handling and high force application.
Innovation Solution
A clamp system with an annular body and offset clamping segments that actuate between retracted and extended positions to secure tubular members, applying forces to hubs for secure coupling without the need for manual bolt tightening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If C-shaped clamps and bolts are used to connect two hubs, then the hubs can be securely connected, but manual handling and bolt tightening involve safety risks and consume a long time
Solution Approach 1:
The clamp is divided into multiple C-shaped members (typically two) that can be independently positioned and secured. Each C-shaped member can be independently handled and fastened, allowing parallel processing and reducing overall connection time while maintaining secure connection through the combined action of multiple segments
Solution Approach 2:
The manual bolt tightening process is replaced with a mechanical fastening system where the C-shaped members are designed to be secured using quick-connect mechanisms or pre-loaded fasteners, eliminating the need for manual torque application and significantly reducing connection time while maintaining connection security
2Reliability
If C-shaped clamps and bolts are used to connect two hubs, then the hubs can be securely connected, but manual handling at height involves safety risks
Solution Approach 1:
Multiple C-shaped members are merged into a single integrated clamp assembly that can be handled as one unit rather than multiple separate components. This reduces the number of manual handling operations required at height, thereby reducing safety risks while maintaining the secure connection function through the combined clamping action of all C-shaped members
Solution Approach 2:
The clamp design incorporates self-aligning features and self-securing mechanisms that reduce or eliminate the need for manual adjustment and tightening operations. The clamp automatically positions itself and secures the hubs without requiring workers to perform high-risk manual operations at height, thereby improving safety while maintaining connection security
3Reliability
If bolts are tightened to secure the hubs, then the connection is secure, but the large force required takes a long time to apply
Solution Approach 1:
The clamp transitions from a static bolted connection to a dynamic fastening system where the C-shaped members can be quickly secured using movable fasteners or spring-loaded mechanisms. This dynamic system allows rapid application of clamping force without requiring prolonged manual effort, thereby improving connection speed while maintaining secure connection through sustained clamping pressure
Solution Approach 2:
The fastening mechanism changes the force application parameter from gradual manual bolt tightening to rapid mechanical or spring-loaded force application. This parameter change allows the full clamping force to be applied almost instantaneously, dramatically improving connection speed while maintaining the same level of connection security through equivalent clamping pressure
Data Source
AI summary
A clamp for coupling two tubular members together includes an annular body. The clamp also includes a plurality of fixed segments that are configured to be secured at least partially within a recess formed in an inner surface of the body. The fixed segments are circumferentially offset from one another with respect to a central longitudinal axis through the body. The fixed segments are configured to exert a downward force on a first hub of a first tubular member. The clamp also includes a plurality of clamping segments that extend radially through the body. The clamping segments are circumferentially offset from one another. The clamping segments are axially offset from the fixed segments. The clamping segments are configured to actuate between a retracted position and an extended position. The clamping segments in the extended position are configured to exert an upward force on a second hub of a second tubular.