A magnetic pump bearing clearance wear online monitoring device and method
A technology of bearing wear and bearing clearance, applied in the field of online monitoring device for bearing clearance wear of magnetic pumps, can solve the problems of large influence and increase the difficulty of processing circuits, etc., achieve expanded application range, real-time monitoring performance reliability, and eliminate bearing wear measurement errors Effect
Active Publication Date: 2020-11-03
JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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Problems solved by technology
The bearing gap signal generated by the detection wire described in the patent is greatly affected by the load of the magnetic pump, which increases the difficulty of processing the circuit
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[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.
[0037] An online monitoring device for bearing clearance wear of a magnetic pump according to the present invention includes n sets of bearing wear detectors 6 and a signal processing and display circuit;
[0038]Each group of bearing wear detectors 6 includes four detection wires 4; the detection wires 4 are located between the spacer 1 and the outer magnetic steel ring 24, and are fixed on the outer surface of the spacer 1 and are axially parallel to the spacer 1; each group of bearing wear The four detection wires 4 of the detector 6 are connected end-to-end along the outer surface of the spacer 1 with insulated wires in pairs, and connected in series to form a whole;
[0039] The 4 interval angles of each group of detection wires are θ 1 , θ 2 , θ 3 , the...
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The invention provides an online monitoring device for magnetic pump bearing clearance wear and a method thereof. The device comprises n groups of bearing wear detectors and a signal processing and display circuit. Detection wires are located between an isolation sleeve and an outer magnetic steel ring and are fixed on the outer surface of the isolation sleeve to be axial parallel with the isolation sleeve; the clearance angles of each group of detection wires are respectively theta1, theta2 and theta3, and the clearance angles among the detection wires of each group of bearing wear detectorsall meet an integral multiple relation of the theta 2; signals of each group of bearing wear detectors are processed through a filter and are then outputted to a spectrum analyzer for spectrum analysis, an image after spectrum analysis is displayed on a display, and when the signals reach a limit value, an alarming circuit is triggered to given an alarm. According to the method of determining theclearance angles among the detection wires based on the number of outer magnetic steels of the magnetic pump, the magnetic pump bearing wear condition can be detected comprehensively, the magnetic pump bearing clearance wear condition can be accurately reflected, the performance is reliable, the mounting and the debugging are convenient, and the structure is reasonably designed.
Description
technical field [0001] The invention belongs to the technical field of displacement measurement. In particular, it refers to an on-line monitoring device and method for bearing gap wear of a magnetic drive pump. Background technique [0002] The magnetic pump realizes leakage-free power transmission by permanent magnetic coupling. Since the magnetic pump adopts a closed structure, the sliding bearings supporting the pump rotor in the magnetic pump are lubricated by the process fluid delivered, and the process fluid is often poor in lubricity; secondly, in the production environment, the liquid in the pump may also be encountered. Under conditions such as evacuation or liquid reduction, the magnetic pump sliding bearing heats up rapidly and the bearing wear accelerates; in addition, solids dispersed in the flowing liquid will cause potential grinding of the bearing or journal surface. The cumulative effect of these events can lead to premature bearing wear. [0003] Slidin...
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IPC IPC(8): G01B7/14
CPCG01B7/144
Inventor 董亮潘琦刘厚林代翠谈明高王勇王凯吴贤芳
Owner JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH