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Method and device for simultaneously testing bending vibration and torsional vibration of rotating shaft of rotating machine

A technology of bending vibration and torsional vibration, applied in measuring devices, using electrical devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problem that the detection instrument cannot realize the simultaneous testing of torsional vibration and bending vibration, high cost, etc., and achieve signal relief Jitter phenomenon, low cost, stable signal effect

Pending Publication Date: 2021-06-25
南京云起共振电力科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for simultaneously testing the bending vibration and torsional vibration of the rotating shaft of a rotating machine, aiming to solve the problem that the detection instruments in the prior art cannot realize the simultaneous testing of torsional vibration and bending vibration, and need to be equipped with their own dedicated analysis instruments , high cost technical issues

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  • Method and device for simultaneously testing bending vibration and torsional vibration of rotating shaft of rotating machine
  • Method and device for simultaneously testing bending vibration and torsional vibration of rotating shaft of rotating machine
  • Method and device for simultaneously testing bending vibration and torsional vibration of rotating shaft of rotating machine

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Embodiment Construction

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0056] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention discloses a method and a device for simultaneously testing bending vibration and torsional vibration of a rotating shaft of a rotating machine. The method comprises the steps of installing a gear disc on a to-be-tested rotating shaft, driving the gear disc to rotate through the to-be-tested rotating shaft, outputting an AC voltage signal through an eddy current sensor, converting the AC voltage signal into a digital signal through a software part, so as to obtain an original vibration signal, and extracting the bending vibration and the torsional vibration of the rotating shaft through two times of maximum value point finding. By means of the method, the torsional vibration and the bending vibration of the rotating shaft can be tested at the same time, the same set of sensor and instrument is adopted in the two kinds of vibration tests, and cost is low.

Description

technical field [0001] The invention relates to the technical field of rotating shaft vibration detection, in particular to a method and device for simultaneously testing bending vibration and torsional vibration of a rotating machine rotating shaft. Background technique [0002] Torsional vibration and bending vibration have a great impact on the safe and stable operation of rotating machinery, and are the focus of unit condition monitoring. Because the rotating shaft is in a rotating state, most of the vibration detection of rotating machinery shafts uses non-contact measurement methods. The current detection instruments cannot realize torsional vibration. Simultaneous testing of bending vibration and bending vibration needs to be equipped with their own dedicated analytical instruments, and the cost is relatively high. Contents of the invention [0003] The purpose of the present invention is to provide a method and device for simultaneously testing the bending vibratio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/06
CPCG01H11/06
Inventor 杨建刚
Owner 南京云起共振电力科技有限公司
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