Helical Strake Coupler Attachment Without Field Welding
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Solution Overview
Problem
Conventional methods for attaching helical strakes to tubular members require labor-intensive and costly welding processes, which are undesirable due to potential shipping damage and handling concerns.
Innovation Solution
A helical strake pole system utilizing a tubular pole with threaded attachment points and adjustable couplers that allow for the removable and perpendicular attachment of helical strake fins without welding, accommodating taper and pitch inconsistencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional welding methods are used to attach helical strakes to tubular members, then strong attachment is achieved, but field labor and construction time increase significantly
Solution Approach 1:
A coupler serves as an intermediary component between the helical strake and the tubular member. The coupler includes a first portion that interfaces with the strake and a second portion that attaches to the tubular member via threaded attachment points, eliminating the need for welding while providing secure mechanical attachment
Solution Approach 2:
The welding process is replaced with a mechanical attachment system using couplers and threaded fasteners. This substitution eliminates the need for specialized welding equipment and skilled labor, significantly reducing field labor requirements and construction time
2Strength
If helical strakes are pre-welded to tubular members, then attachment strength is ensured, but shipping damage and handling concerns occur
Solution Approach 1:
The attachment system is divided into separate components: the helical strake, the coupler, and the threaded attachment points on the tubular member. This segmentation allows each component to be shipped independently in a protected state and assembled at the installation site, avoiding shipping damage to pre-attached strakes
Solution Approach 2:
The threaded attachment points are pre-formed on the tubular member during manufacturing, allowing for later attachment of strakes with couplers. This preliminary preparation enables delayed attachment that avoids shipping damage while ensuring proper alignment and secure fastening at installation
3Reliability
If conventional welding attachment is used, then secure attachment is achieved, but labor costs and construction complexity increase
Solution Approach 1:
The coupler acts as a standardized intermediary component that simplifies the attachment process. It provides a universal interface between the helical strake and the tubular member with pre-drilled holes and threading, reducing installation complexity compared to custom welding procedures
Solution Approach 2:
The attachment method changes from a permanent welded joint to a removable mechanical connection using standardized fasteners. This parameter change in the attachment mechanism reduces installation complexity while maintaining secure attachment through proper fastening
Data Source
AI summary
A helical strake pole system that includes a tubular pole having a longitudinal axis and threaded attachment points. The system further includes a helical strake fin disposed circumferentially around a portion of the tubular pole along the longitudinal axis. The system further includes couplers disposed on the tubular pole. The couplers are configured such that each coupler has a first portion with a slot configured to receive an upper portion of the helical strake fin and a second portion configured to removably coupled to a threaded attachment point of the tubular pole. In addition, each coupler is configured to position a portion of the helical strake fin substantially perpendicular to a surface of the tubular pole.