Magnetic Electrolyte Filter for Iron Fragment Pump Protection
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Solution Overview
Problem
In all-iron redox flow batteries, iron fragments from the negative electrode can enter the electrolyte solution and adhere to the impeller housing of magnetic-drive centrifugal pumps, causing premature degradation due to scoring, which necessitates a solution to route these fragments away from the pumps.
Innovation Solution
A magnetic filter is integrated into the electrolyte flow tube system, featuring a second tube with a wire wound within to generate a magnetic field that captures and holds iron fragments until they are reduced to a size that no longer causes degradation, thereby preventing them from reaching the pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a magnetic-drive centrifugal pump is used to circulate electrolyte, then pumping efficiency is improved, but iron fragments magnetically adhere to the impeller housing causing premature degradation
Solution Approach 1:
The patent extracts the harmful iron fragments from the electrolyte stream by introducing a magnetic filter that captures and removes these fragments before they can reach and damage the pump impeller housing, thereby separating the pumping function from the fragment accumulation problem
Solution Approach 2:
The magnetic filter acts as an intermediary component between the electrolyte circulation system and the pump, using magnetic field interaction to capture iron fragments and prevent them from directly contacting and degrading the pump components
2Device complexity
If iron fragments are allowed to pass through the electrolyte pump, then system simplicity is maintained, but scoring and degradation of the impeller housing occurs
Solution Approach 1:
A magnetic filter is introduced as an intermediary component that captures iron fragments through magnetic attraction, preventing them from reaching and scoring the pump impeller housing while maintaining overall system simplicity through the addition of this single protective element
3Reliability
If a magnetic filter is added to capture iron fragments, then pump degradation is prevented, but device complexity increases
Solution Approach 1:
The magnetic filter design extracts only the essential function of fragment capture using a simple wire wound around a tube, removing unnecessary complexity while maintaining effective protection against iron fragment damage
Solution Approach 2:
The magnetic filter utilizes changes in magnetic field parameters (strength and distribution) to effectively capture iron fragments of varying sizes, optimizing the protection function without requiring complex mechanical structures
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 filter effectively prevents iron fragments from degrading the pumps by attracting and dissolving them, extending the longevity of the electrolyte pumps and maintaining system efficiency.
Implementation Method 1
a wire wound within the second tube configured to generate a magnetic field
Implementation Method 2
holding the iron fragments until they are reduced to a size that no longer causes degradation
Data Source
AI summary
Systems and methods are provided for an energy storage system. In one example, the energy storage system comprises a first tube configured to flow an electrolyte solution to a pump, a second tube extending through the first tube, the second tube hermetically sealed from an interior of the first tube, and a wire wound within the second tube configured to generate a magnetic field.