Pipe Scanner Axial Circumferential Drive Continuous Inspection
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Solution Overview
Problem
Existing pipe scanners are limited to scanning only the lower half of a pipe and require manual relocation every 24 inches, which restricts their ability to continuously monitor the 360° circumference of a pipe over an extended length without human intervention.
Innovation Solution
A modular pipe scanner design featuring a circular collar with an axial drive and circumferential drive, allowing the scanner to travel axially at 20 inches per second and circumferentially at 10 inches per second, with programmable movements and independent programming for both drives, enabling continuous scanning without manual relocation except at risers or vertical support members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the scanner is designed for a fixed stroke length (24 inches), then the device structure is simple, but the scanning coverage is limited and requires manual relocation
Solution Approach 1:
The scanner employs dynamic drive systems that enable continuous axial movement along the pipe without fixed stroke limitations. The axial drive mechanism allows the scanner to travel indefinitely along the pipe length, transforming the fixed-stroke design into a dynamic, continuous-motion system that eliminates manual relocation requirements.
Solution Approach 2:
The scanner design integrates multiple functions into a single continuous operation system. The combination of axial drive for longitudinal movement and circumferential drive for 360-degree scanning creates a universal platform that can scan any position along the pipe without requiring different configurations or manual intervention for relocation.
2Extent of automation
If the scanner requires manual relocation every 24 inches, then the automation level is low, but the control system is simple
Solution Approach 1:
The scanner is equipped with self-propelling axial and circumferential drive systems that enable it to move and scan autonomously along the pipe. The scanner services itself by continuously advancing axially and rotating circumferentially without external intervention, achieving full automation for continuous scanning operations over extended pipe lengths.
Solution Approach 2:
The scanner implements continuous useful action through its axial drive mechanism that enables uninterrupted scanning along the pipe length. The system maintains continuous motion and scanning coverage without pauses for manual relocation, ensuring 100% coverage through automated, continuous operation along the entire pipe extent.
3Productivity
If the scanner travels at high axial speed (20 inches per second), then the productivity is high, but the scanning precision may be compromised
Solution Approach 1:
The scanner maintains continuous circumferential rotation at 360 degrees while advancing axially at high speed. This continuous dual-motion scanning ensures that no area is missed and maintains measurement precision across the entire pipe surface, as the sensor continuously samples all circumferential positions at every axial location.
Solution Approach 2:
The scanner utilizes the circumferential rotation around the pipe's cylindrical geometry to maintain consistent scanning precision. By rotating 360 degrees around the curved pipe surface while advancing axially, the system ensures uniform coverage and precision across the entire circular cross-section, accommodating the pipe's spherical/cylindrical shape.
4Area of stationary object
If the scanner is designed to scan only the lower half of the pipe, then the device complexity is reduced, but the scanning coverage is insufficient
Solution Approach 1:
The scanner is designed to rotate circumferentially around the entire 360 degrees of the pipe's cylindrical surface. This circumferential drive system enables the sensor to scan the full circular cross-section of the pipe, including upper and lower halves, by following the curved geometry of the pipe rather than being limited to a linear or partial-path configuration.
Solution Approach 2:
The scanner adds the circumferential dimension to the scanning path, transforming a limited linear or partial-arc scan into a complete three-dimensional coverage of the pipe surface. By incorporating rotation around the pipe's circumference alongside axial movement, the system achieves comprehensive coverage of the entire pipe exterior surface.
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
Enables efficient, high-speed scanning of the 360° circumference of pipes over extended lengths without operator intervention, increasing inspection throughput and accommodating varying pipe diameters and angled runs.
Implementation Method 1
the wheel is magnetized to gain traction on ferrous piping
Data Source
AI summary
A pipe scanner for non-destructively scanning an extended length of the circumference of a pipe along an axial dimension. The pipe scanner includes a collar sized to fit around the outer circumference of the pipe. Wheels supported on the collar ride on the surface of the pipe while maintaining a space between the inner surface of the collar and the outer surface of the pipe. A track extends circumferentially around the collar for guiding a circumferential drive unit that rides on the track and carries a non-destructive sensor for monitoring the surface of the pipe as the circumferential drive unit moves around the track. An axial drive unit is connected to the collar, having a plurality of circumferentially spaced drive wheels in contact with the pipe for moving the collar along the extended length.