Magnet Array Detection Structure for Imaging Wear Debris in Flow Space
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Solution Overview
Problem
The existing technique for estimating the deterioration state of mechanical parts by photographing internal spaces using a spacer member with a magnet faces challenges, as a large magnet volume reduces the visible area for foreign object detection, while a small magnet volume attracts fewer foreign objects, limiting the acquisition of appropriate image data.
Innovation Solution
A detection device is designed with a magnet having an attracting face facing a flow space, opposed to a photographing unit via the flow space, allowing for the collection and imaging of foreign objects, thereby acquiring appropriate image data for estimating mechanical part deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the volume of the magnet embedded in the spacer member is large, then the amount of foreign objects that can be attracted by the magnet is increased, but the proportion of the magnet in the end face of the spacer member becomes large, reducing the range of the end face at which foreign objects can be photographed by the photographing device
Solution Approach 1:
The magnet is divided into a plurality of magnets arranged in an array on the end face of the spacer member. This segmentation allows the total magnetic attracting capability to be distributed across multiple smaller units, increasing the overall amount of foreign objects that can be attracted while maintaining a larger photographable area compared to a single large magnet.
Solution Approach 2:
Instead of using a single large magnet that occupies significant area, the invention transitions to multiple smaller magnets arranged in a two-dimensional array. This dimensional arrangement allows foreign objects to be attracted across a broader area while the photographing device can capture a larger portion of the end face, effectively resolving the area conflict.
2Area of stationary object
If the volume of the magnet embedded in the spacer member is small, then the proportion of the magnet in the end face of the spacer member is reduced, increasing the range of the end face at which foreign objects can be photographed, but the amount of foreign objects that can be attracted by the magnet is reduced
Solution Approach 1:
The solution divides the magnetic function into multiple smaller magnets arranged in an array. While each individual magnet is small and allows for better photographability, the collective array of multiple magnets maintains or enhances the total foreign object attracting capability, thus resolving the contradiction between photographable area and attracting quantity.
Solution Approach 2:
Multiple small magnets are combined in an array configuration to achieve the cumulative magnetic effect needed for attracting sufficient foreign objects. This merging of multiple small units provides both the photographable area benefits of small magnets and the attracting capability of a large magnet system.
3Reliability
If a magnet is embedded in a spacer member for attracting foreign objects, then foreign objects can be collected for deterioration estimation, but the magnet occupies space on the end face, reducing the visible area for photographing
Solution Approach 1:
The single large magnet is segmented into multiple smaller magnets arranged in an array. This segmentation maintains the foreign object collection capability through cumulative magnetic effect while reducing the proportion of end face occupied by magnetic material, thereby increasing the visible photographing area.
Solution Approach 2:
Different regions of the end face are assigned different functions: some regions contain magnets for attracting foreign objects, while other regions remain clear for photographing. The array arrangement of multiple small magnets creates local magnetic attraction zones while preserving global photographable space.
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 configuration enables effective collection and imaging of foreign objects, providing accurate image data for assessing mechanical part deterioration while preventing oil contact with the photographing unit and reducing maintenance needs.
Implementation Method 1
Foreign objects generated from the mechanical part are attracted to the end face of the spacer member by the magnetic force of the magnet
Data Source
AI summary
A detection device includes a photographing unit, a first holding portion holding the photographing unit, a magnet having an attracting face facing a flow space in which fluid flows and opposed to the photographing unit via the flow space, a second holding portion holding the magnet, and a connection portion connected to the second holding portion and having an opening portion.