Magnetic Filter Assembly With Removable Magnet Rods
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Solution Overview
Problem
Existing solutions for removing ferromagnetic material from fluid streams in high-flow applications, such as the oil and gas industry, face challenges including inefficient magnetic field application, hazardous exposure to personnel and equipment, and complex cleaning processes that are costly and inadequate.
Innovation Solution
A magnetic filter assembly with elongate hollow sleeves that allow magnets to be removed without exposing the interior of the fluid circuit to the environment, enabling periodic cleaning while maintaining the magnetic field's efficiency and safety by using removable magnet rods or electromagnets within sealed sleeves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic component is directly exposed to the fluid, then the magnetic field interacts efficiently with the fluid flow, but removing accumulated ferromagnetic material becomes difficult and cleaning becomes complex
Solution Approach 1:
The magnetic component is divided into multiple rod-shaped magnets that can be individually removed from the filter housing, allowing selective maintenance and cleaning without exposing the entire fluid circuit to the environment
Solution Approach 2:
The magnetic rods are extracted from the filter housing through removable sleeves, enabling the magnetic field source to be separated from the fluid-exposed interior, thus facilitating cleaning while maintaining efficient magnetic interaction during operation
2Ease of operation
If the magnetic component is arranged on the outside of pipework, then removal of accumulated ferromagnetic particles is easier, but the magnetic field application becomes inefficient and requires large magnets
Solution Approach 1:
The rod-shaped magnets are nested within hollow sleeves that are themselves positioned within the filter housing, creating a compact multi-layer structure that maximizes magnetic field interaction with the fluid flow while maintaining ease of removal and cleaning
3Ease of operation
If the magnetic component is arranged on the outside of pipework, then the magnetic field can be switched off for cleaning, but shielding is required which adds cost and bulk
Solution Approach 1:
The magnetic rods are completely extracted from the filter housing during cleaning operations, eliminating the need for magnetic shielding since the magnetic field source is removed from the vicinity of the fluid circuit and personnel areas
4Ease of operation
If mechanical wipers or scrapers are used for cleaning, then ferromagnetic material can be removed, but cost and complexity increase and cleaning is not always adequate
Solution Approach 1:
The system uses the process fluid itself to clean the magnetic rods by flushing ferromagnetic particles off the surfaces when the magnets are removed, eliminating the need for separate mechanical cleaning mechanisms
Solution Approach 2:
A flushing operation using fluid flow is employed to remove accumulated ferromagnetic material from the magnetic rod surfaces after the magnets are removed from the sleeves, providing effective cleaning without mechanical contact
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
This solution effectively removes ferromagnetic material from fluid streams without exposing the process fluid circuit to the surroundings, reducing hazards and costs associated with previous methods, while maintaining efficient magnetic interaction and simplifying the cleaning process.
Implementation Method 1
A magnetic filter assembly with elongate hollow sleeves that allow magnets to be removed without exposing the interior of the fluid circuit to the environment, enabling periodic cleaning while maintaining the magnetic field's efficiency and safety
Data Source
AI summary
A magnetic filter assembly 1 is described which is suitable for incorporating into a fluid system such that a process fluid flows through the filter to remove ferromagnetic particles in the fluid. The filter assembly 1 comprises a housing 2 having a flow chamber. The housing also comprises one or more elongate hollow sleeves 10 extending into the flow chamber such that, in use, an exterior surface of each sleeve 10 is exposed to the process flow and an interior surface of each sleeve 10 is sealed from the process flow. Each sleeve 10 has an opening via which the interior surface of the sleeve is open or openable to the environment whilst remaining sealed from the process flow. Each sleeve has received in it a magnet 12, the magnet being removable from the sleeve via the opening. In this way, cleaning of the filter by removal of the magnets is facilitated, without exposing the process flow.