Axisymmetric Magnetic Anti-Scaling Pipe Layout for Unrestricted Flow

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Solution Overview

Problem

Existing magnetic devices for scaling prevention in oil pipelines are intrusive, reduce fluid flow, and are ineffective due to ferromagnetic materials in the oil industry, lacking robustness and efficient magnetic field concentration.

Innovation Solution

A non-intrusive magnetic anti-scaling device with an axisymmetric magnetic arrangement using permanent magnets, non-ferromagnetic tubes, and transition elements, concentrating magnetic flow density inside the piping to inhibit scale formation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If intrusive magnetic devices are used to prevent scaling, then magnetic field generation is achieved, but fluid flow is reduced

Engineering Contradiction:
Improvescaling preventionVSAvoidfluid flow
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The magnetic device is nested within the pipeline structure itself, with the magnetic arrangement positioned between the internal tube (through which fluid flows) and the external tube. This nesting allows the magnetic field generation function to be integrated without protruding into the fluid flow path, thus preventing scaling while maintaining fluid flow productivity.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If magnets are placed around existing piping to generate magnetic field, then magnetic treatment is achieved, but installation complexity and pipe diameter increase

Engineering Contradiction:
Improvemagnetic treatmentVSAvoidinstallation process
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The magnetic device merges the treatment function with the pipeline structure by using the pipeline walls (internal and external tubes) as the mounting structure for the magnetic arrangement. This combination eliminates the need for separate external mounting structures, simplifying installation and avoiding increases in external pipe diameter.

Inventive Principle:
Principle #5Merging (Combining)

3Strength

If ferromagnetic materials are used in piping, then structural integrity is maintained, but magnetic field intensity is reduced or eliminated

Engineering Contradiction:
Improvepiping structural integrityVSAvoidmagnetic field effectiveness
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The device creates a local non-ferromagnetic zone between the internal and external tubes where the magnetic arrangement is positioned. This local quality change allows the magnetic field to be generated effectively in this specific region without compromising the overall ferromagnetic structure and structural integrity of the piping system.

Inventive Principle:
Principle #3Local quality

4Reliability

If magnetic flow density is increased to inhibit scaling, then scaling prevention effectiveness is improved, but device complexity increases

Engineering Contradiction:
Improvescaling inhibition effectivenessVSAvoidmagnetic arrangement structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The device concentrates magnetic flow in the radial dimension (perpendicular to fluid flow) by positioning magnets circumferentially around the internal tube. This dimensional approach allows high magnetic flow density to be achieved at the pipe wall interface without requiring complex axial or longitudinal magnetic structures, thus improving scaling prevention while controlling device complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 device effectively inhibits scale formation at the inner wall of piping by achieving high magnetic flow density without reducing fluid flow, suitable for high-pressure and temperature environments, and is compatible with ferromagnetic materials.

Implementation Method 1

The magnetic arrangement presents, at least, a concentration plan of the magnetic flow density in a perpendicular direction to the fluid flow

Methodology Applied
Scientific EffectMagnetic field: Magnetic Field

Data Source

PatentEP4448949B1Magnetic Anti-scaling device
Publication Date: 2025.11.12 VALLOUREC TUBOS DO BRASIL SA
  • EP4448949B1 patent drawingFigure 1~2
  • EP4448949B1 patent drawingFigure 3~4
  • EP4448949B1 patent drawingFigure 5~7

AI summary

This invention refers to a magnetic anti-scaling device that can be coupled around piping with fluid flow inside it, comprising an external tube; and a plurality of magnetic arrangements, wherein each magnetic arrangement is formed by a cylindric support and a plurality of magnets circumferentially positioned on the cylindric support; where- in the plurality of magnetic arrangements comprises a sequency of magnetic arrangements placed side by side, and likely to be longitudinally coupled around the piping in an axisymmetric arrangement, so as to form, at least, a concentration plan of magnetic field; and wherein a spacer and an absorber are positioned at each end of the axisymmetric arrangement, and the external tube surrounds the axisymmetric arrangement. The application of a high-density magnetic flow orthogonally to the speed of the fluid to be treated inhibits formation of scales at the internal wall of piping, thus reducing scaling at the equipment upstream.