Fastening Strap Locking Mechanism for Clamp-On Flowmeter Alignment
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Solution Overview
Problem
Existing methods for attaching clamp-on flowmeters to fluid pipes are difficult and expensive to align and secure, often requiring a second operator and risking the device becoming loose due to inadequate holding force.
Innovation Solution
A fastening device with a detent-equipped strap and locking mechanism allows for initial loose attachment and subsequent alignment, followed by full tensioning to ensure secure fixation using a threaded rod and screw device, separating the attachment steps for independent handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cable ties are used to attach clamp-on flowmeter to pipe, then attachment is simple, but alignment is difficult and requires additional operators
Solution Approach 1:
The attachment process is divided into two independent stages: first securing the flowmeter loosely to the pipe using the fastening strap and locking device, then performing alignment adjustments. This segmentation allows the operator to complete attachment without requiring a second person, while still enabling proper alignment afterward.
Solution Approach 2:
The fastening strap and locking device enable preliminary attachment of the flowmeter to the pipe before final alignment is achieved. The locking device with its latching mechanism allows the strap to be secured in a loose state, providing preliminary fixation that holds the device in place during alignment operations.
2Productivity
If cable ties are used for fastening, then installation is quick, but holding force is insufficient and device becomes loose
Solution Approach 1:
The fastening strap is designed with a curved configuration that wraps around the pipe, distributing the holding force along the curvature. This curved geometry provides mechanical advantage and ensures reliable holding force while maintaining quick installation through the ratcheting locking mechanism.
Solution Approach 2:
The fastening system allows adjustment of the strap tension parameter through the ratcheting locking device, enabling the operator to optimize the holding force to match the specific requirements of different pipe sizes and flowmeter weights, thereby ensuring reliable attachment.
3Ease of manufacture
If cable ties are used, then attachment is simple, but device becomes loose and requires destructive tensioning to secure
Solution Approach 1:
The invention replaces disposable cable ties with a reusable fastening strap and locking device system. The strap can be repeatedly attached and released without degradation, eliminating the need for destructive tensioning and providing durable, reliable fixation that maintains its holding capability over multiple installation and removal cycles.
4Reliability
If locking device engages with grid of fastening strap, then strap cannot be released, but alignment before full tensioning is needed
Solution Approach 1:
The locking device features a dynamic latching mechanism that can be engaged and disengaged. During alignment, the operator can temporarily disengage the latch to adjust the flowmeter position, then re-engage it to secure the alignment. The strap itself remains under tension throughout, providing continuous holding force while allowing positional adjustments before final locking.
Data Source
AI summary
The method uses a fastening device with a fastening band (4) having a lock (3) and to which a locking device (5) is fastened. The band is fed into the locking device and pulled around a measuring tube (1) and locked in the locking device. The fastening device is fastened to the measuring tube and the flow meter is then fastened to a holder without completely tightening the band. The flow meter is then correctly aligned and is then tightened onto the holder by tightening the band. Independent claims also cover a fastening apparatus.