Rotatable Magnet Rotor Assembly for Pipeline Inspection
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Solution Overview
Problem
Existing pipeline inspection devices struggle to effectively control and manipulate the magnetic field for accurate data interpretation and movement through pipelines, particularly in unpiggable lines, due to inadequate control over the magnetic field generated by permanent magnets and difficulties in adjusting the rotatable magnets.
Innovation Solution
A conduit sensor device with a magnetic shunt system that includes rotatable magnet rotor assemblies and a shunt motor, allowing for precise control of the magnetic field by rotating the magnets to maximize or minimize the magnetic field strength, enabling easier movement through pipelines and accurate data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If permanent magnets are used to generate magnetic field for sensor operation, then measurement precision is improved, but magnetic field control becomes difficult and device complexity increases
Solution Approach 1:
The patent applies the Dynamics principle by making the magnetic field controllable and adjustable rather than fixed. Rotatable magnets are positioned at different angular positions to dynamically change the magnetic field strength and distribution. This allows the magnetic field to be optimized for different measurement conditions and pipeline configurations, improving measurement precision while maintaining manageable system complexity through mechanical adjustability rather than complex electronic control systems.
Solution Approach 2:
The patent implements Parameter changes by varying the magnetic field parameters (strength, distribution, orientation) through mechanical adjustment of magnet positions. By changing the angular position of rotatable magnets, the magnetic field parameters are adjusted to match different inspection requirements, pipeline diameters, and sensor positions, enabling precise control without increasing overall device complexity.
2Adaptability or versatility
If rotatable magnets are added to control magnetic field, then magnetic field control is improved, but device complexity and difficulty of operation increase
Solution Approach 1:
The rotatable magnets are designed with simple rotational degrees of freedom that allow easy adjustment of magnetic field characteristics. The mechanical design enables smooth rotation and positioning without complex actuation mechanisms, maintaining operational simplicity while providing versatile magnetic field control for different inspection scenarios.
Solution Approach 2:
The system provides versatile magnetic field control by allowing operators to adjust magnet positions to change field parameters. This mechanical adjustability enables adaptation to various pipeline conditions, sensor types, and inspection requirements without adding complex electronic control systems or multiple specialized components.
3Measurement precision
If magnetic field strength is increased for better sensor performance, then measurement precision is improved, but magnetic attraction to pipeline walls increases making movement difficult
Solution Approach 1:
The patent applies Dynamics by making the magnetic field strength dynamically adjustable rather than fixed at maximum. Operators can reduce magnet rotation or field strength when approaching pipeline features that cause excessive attraction, enabling smooth passage through valves and obstructions while maintaining high measurement precision when needed during normal inspection operations.
Solution Approach 2:
The system enables real-time adjustment of magnetic field parameters to optimize the balance between measurement quality and movement ease. By varying field strength according to operational conditions, the system achieves high measurement precision during stable inspection phases while reducing magnetic attraction during movement through challenging pipeline sections.
4Ease of operation
If mechanical spring system is used to control rotatable magnets, then ease of operation is improved, but control precision and coordination between multiple magnets become difficult
Solution Approach 1:
The patent segments the magnetic field control into multiple independently adjustable rotatable magnets rather than using a single centralized control mechanism. Each magnet can be adjusted independently to achieve precise magnetic field distribution, and the segmentation allows for modular design where each unit can be optimized for ease of operation while collectively achieving high positioning precision.
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
The magnetic shunt system allows for accurate control of the magnetic field, facilitating the movement of the inspection pig through pipelines, including valves and obstructions, and enables precise data comparison by adjusting the magnetic field strength as needed.
Implementation Method 1
several permanent magnets disposed at the circumference of the supporting structure for generating a magnetic filed
Implementation Method 2
A magnetic shunt device is provided which effectively turns off the magnetic field
Implementation Method 3
A propulsion apparatus is provided which utilizes acoustic waves to propel an inspection device through a pipeline
Implementation Method 4
A conduit sensor device with a magnetic shunt system that includes rotatable magnet rotor assemblies and a shunt motor
Data Source
AI summary
A conduit sensor device comprises a first end portion, a second end portion, a first magnet rotor assembly residing proximate the first end portion of the device and rotatable between first and second positions, a second magnet rotor assembly residing proximate the second end portion of the device and rotatable between first and second positions. The first magnet rotor assembly includes a first plurality of magnets axially arranged about a first axis. The first magnet rotor assembly includes a first top portion and a first bottom portion securing the first plurality of magnets within the first magnet rotor assembly. The second magnet rotor assembly includes a second plurality of magnets axially arranged about a second axis. The second magnet rotor assembly includes a second top portion and a second bottom portion securing the second plurality of magnets within the second magnet rotor assembly.