Micro-inductance sensor used for detecting metal fragments in oil liquid

A metal chip, micro-inductance technology, applied in the direction of using electrical devices, electromagnetic means, instruments, etc., can solve the problems of high cost, complicated operation, inability to diagnose the wear state of equipment in time, etc., to increase the number and measure in time. Effect

Inactive Publication Date: 2011-08-10
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This off-line analysis method has the disadvantages of high cost, complicated operation, and limited measurement sample points, and cannot diagnose the wear state of equipment in time

Method used

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  • Micro-inductance sensor used for detecting metal fragments in oil liquid
  • Micro-inductance sensor used for detecting metal fragments in oil liquid
  • Micro-inductance sensor used for detecting metal fragments in oil liquid

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Embodiment Construction

[0017] Attached below Figure 1~3 The present invention is described further:

[0018] In this embodiment, conventional machining, MEMS technology and PCB printing technology are adopted for design and installation.

[0019] The invention consists of a three-way pipe joint 1, a piston 3, a microcoil 12 and a PCB board.

[0020] Such as figure 1 The three-way pipe joint 1 of this embodiment shown can be made of non-magnetic stainless steel material but not limited to stainless steel, other non-magnetic conductive materials such as hard aluminum alloy, high-strength nylon, etc., and the three-way pipe joint 1 is at right angles to the main pipeline The joint is processed into a piston mounting joint 2, and the piston mounting joint thread is machined in the piston mounting joint inner hole, and a groove is processed at the outer end of the piston mounting joint 2 for installing the sealing ring 4. The two ends of the main pipeline of the three-way pipe joint 1 are processed w...

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Abstract

The invention discloses a micro-inductance sensor used for detecting metal fragments in oil liquid, which belongs to the application field of sensors. The micro-inductance sensor comprises a tee pipe joint, a piston, a micro-coil, a PCB (printed circuit board), a welding lead, a bonding lead and an insulating layer. The micro-inductance sensor has the characteristics that: (1) the online detection of the metal fragments in the oil liquid can be realized; (2) the metal fragments with small size can be measured by the micro-coil, such as the diameter of 20-120mum, forecast is given off in the early stage of wear failure of equipment so as to take maintenance and repair measures; (3) the ferromagnetism or non-ferromagnetism of the metal fragments can be judged, and more diagnostic messages can be provided for judging whether the wear part is a bearing or a gear; and (4) the array measurement of the oil liquid can be realized, and the amount of oil sample measurement is increased.

Description

technical field [0001] The present invention is a micro sensor, specifically a kind of metal debris suspended in oil, capable of detecting the size of metal debris, and capable of distinguishing ferromagnetic metal debris and non-ferromagnetic metal debris, according to the metal debris in the oil The size of the debris determines the wear state of the equipment, and the wear parts are preliminarily diagnosed according to the ferromagnetic and non-ferromagnetic properties of the debris, and an online monitoring method is provided for the fault diagnosis of mechanical equipment using lubricating oil. Background technique [0002] At present, the detection of metal wear debris in oil is an important content of oil monitoring, and it is a main method for predicting wear failure and fault diagnosis of mechanical equipment. However, currently in engineering use, off-line technology is mainly used to monitor the performance and state of oil, and the oil samples collected on site a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/00G01N27/72
Inventor 刘本东李德胜朱晓良
Owner BEIJING UNIV OF TECH
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