Wear particle online monitoring method using centrifugation, adsorption and adjacent capacitance

A particle and capacitance technology, applied in the field of hydraulic system, can solve the problem of unsatisfactory sensor sensitivity, and achieve the effects of inhibiting bubble growth, increasing particle concentration, and increasing dielectric constant.

Inactive Publication Date: 2016-10-12
SHAOXING UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The distance between the excitation plate and the receiving plate of the capacitive sensor is limited by the diameter of the hydraulic pipe. Due to the relatively large diameter of the hydraulic pipe, the sensitivity of the sensor is not ideal.

Method used

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  • Wear particle online monitoring method using centrifugation, adsorption and adjacent capacitance
  • Wear particle online monitoring method using centrifugation, adsorption and adjacent capacitance
  • Wear particle online monitoring method using centrifugation, adsorption and adjacent capacitance

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Embodiment Construction

[0046] Please refer to the attached figure 1 to attach Figure 11 As shown, the present invention is an on-line monitoring device for wear particles using centrifugal, adsorption and adjacent capacitors, which consists of a temperature control module 1, a magnetization module 2, a mechanical centrifugal module 3, a rotating magnetic field centrifugal module 4, an adsorption module 5, and a phase It is composed of adjacent capacitor particle monitoring module 6, degaussing module 7 and ECU10. Wherein, the temperature control module 1 , the magnetization module 2 , the mechanical centrifugal module 3 , the rotating magnetic field centrifugal module 4 , the adsorption module 5 , the adjacent capacitive particle monitoring module 6 and the degaussing module 7 are sequentially connected.

[0047] One end of the temperature control module 1 is provided with an oil inlet 8 for inputting hydraulic oil into the device, which is composed of a heater, a cooler and a temperature sensor. ...

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Abstract

The invention relates to a wear particle online monitoring method using centrifugation, adsorption and adjacent capacitance. Wear particle online monitoring is conduced sequentially by means of a temperature control module, a magnetization module, a mechanical centrifugation module, a rotary magnetic field centrifugation module, an adsorption module, an adjacent capacitance wear particle monitoring module and a demagnetization module. An oil inlet is formed in one end of the temperature control module, an oil outlet is formed in one end of the demagnetization module, and the demagnetization module is composed of a remanence sensor and a demagnetizer. The adjacent capacitance sensor technology based on the capacitance edge effect is introduced, and non-intrusive and unrestricted monitoring of wear particles is achieved. By means of the magnetization, mechanical centrifugation and rotary magnetic field centrifugation modules, wear particles in oil are magnetized and polymerized into large particles and move to the position near a pipe wall to be adsorbed by the adsorption module so that the intensity of output monitoring signals of an adjacent capacitance sensor can be increased. By means of the temperature control module and a reasonably designed polar plate structure of the adjacent capacitance sensor, noise is suppressed, and the overall performance of an adjacent capacitance sensor monitoring device is optimized.

Description

【Technical field】 [0001] The invention relates to an online monitoring method for wear particles in hydraulic pipeline oil, in particular to an online monitoring method for wear particles using centrifugal, adsorption and adjacent capacitors, and belongs to the technical field of hydraulic systems. 【Background technique】 [0002] The wear particles in the hydraulic system oil can not only cause abrasive wear of the kinematic pair, but also hinder the relative movement of the kinematic pair, resulting in malfunction of the control components. Statistics at home and abroad show that 70% of hydraulic machinery failures come from particle pollution of oil. Therefore, on-line monitoring of wear particles in oil has become one of the important ways to reduce wear and hydraulic system failures. [0003] Capacitive sensors are used in the pollution monitoring of machine oil because of their convenient fabrication and low cost. Patent Document 1 (Chinese Invention Patent Authorizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/0656
Inventor 赵徐涛
Owner SHAOXING UNIVERSITY
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