Dynamic balancing method for high-speed rotors

A high-speed rotor and rotor technology, applied in static/dynamic balance testing, machine/structural component testing, measuring devices, etc., can solve the problems of low extraction accuracy of unbalanced vibration and high cost of dynamic balancing operation

Active Publication Date: 2014-11-26
XIDIAN UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to provide a dynamic balancing method for high-speed rotors, which overcomes the problems of high cost of dynamic balancing operation and low precision of unbalanced vibration extraction in the existing dynamic balancing technology

Method used

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  • Dynamic balancing method for high-speed rotors
  • Dynamic balancing method for high-speed rotors
  • Dynamic balancing method for high-speed rotors

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Experimental program
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Embodiment 1

[0047] This embodiment mainly verifies the validity and accuracy of the present invention.

[0048] 1. Composition of dynamic balance experiment system

[0049] Such as figure 1 As shown, the unbalanced fault is simulated by the rotor experimental system to study the effectiveness of the dynamic balancing method of the present invention. The hardware part of the system mainly includes several major modules such as Bently RK4 rotor test bench, eddy current displacement sensor 2, signal conditioning module, NI data acquisition module, and industrial computer. Among them, the rotor test bench is composed of three parts: the rotor connected to the motor 4, the bearing 5, and the mass disc 3. The eddy current displacement sensor 2 can test the radial vibration information of the rotor in real time, and the data acquisition module converts the analog signal representing the displacement information Convert it into a digital signal, and send it to an industrial computer for unbalan...

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Abstract

The invention belongs to the technical field of rotating equipment fault diagnosis and control, and particularly relates to a dynamic balancing method for high-speed rotors. According to the method, on the basis of acquiring vibration information of a rotor, vibration data at high speed and vibration data at low speed are cut down at the same scale through post processing, the interference of rotor measurement section profile error, phase discrimination mark, electromagnetic interference, bending and other non-imbalance factors is eliminated, and purification of unbalanced vibration is realized. Compared with a traditional dynamic balancing method, the method ensures precise acquisition of unbalanced vibration data and obviously improves the precision of dynamic balancing, and the method needs no phase discrimination sensors, reduces the dependence of a system to the installation space and reduces the complexity and the development cost of the system. Besides, the method has a wide range of applications, has a simple process, is conductive to the realization of computerized control, and has good practical application values.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis and control of rotating equipment, and in particular relates to a dynamic balancing method for a high-speed rotor. Background technique [0002] The rotor is the core component of rotating equipment. Due to factors such as manufacturing and installation errors and uneven materials, the center of mass of the rotor will more or less deviate from its geometric center, that is, there is an imbalance. When the rotor rotates at high speed, the imbalance will cause vibration. If the vibration exceeds a certain limit, it will not only affect the performance of the rotating equipment, but also cause damage to the components of the rotor itself. Therefore, how to control the vibration caused by rotor imbalance is a key issue in the use of rotating equipment. [0003] Dynamic balance is based on accurate rotor vibration signals, but the vibration signals collected in engineering practice are often a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/16
Inventor 章云黄新波邵明平邵敏
Owner XIDIAN UNIV
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