One disc flexible rotor transient equilibration process

A flexible rotor, transient balancing technology, applied in static/dynamic balance testing, measuring devices, instruments, etc., can solve the problems of long time, many startups, complicated procedures, etc.

Inactive Publication Date: 2008-06-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the balance accuracy of the trial weight cycle shift method is relatively high, it requires more startup times, complicated procedures, and takes a long time

Method used

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  • One disc flexible rotor transient equilibration process
  • One disc flexible rotor transient equilibration process
  • One disc flexible rotor transient equilibration process

Examples

Experimental program
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Embodiment Construction

[0035] The present invention will be further described now in conjunction with accompanying drawing:

[0036] The present embodiment is in the RK4 rotor test bench of Bently Company (reference figure 1 ) completed on. The characteristic disk of the rotor is a steel disk of equal thickness with 16 holes (refer to figure 2 ), the distance from the center of each hole to the rotor shaft is 3cm. On the one hand, the 16 holes are used to set the initial unbalance of the rotor, and on the other hand, they are used to add test weight when balancing the rotor. The rotor system is equipped with a number of balance screws ranging in weight from 0.1g to 2g.

[0037] The parameters of the rotor system are as follows:

[0038] The total length of the shaft l = 0.56m, each end of the bearing housing protrudes l 1 = l 2 =0.03m, the diameter of the shaft d=10mm, the density of the shaft is ρ=7.8×10 3 kg / m 3 , the mass of the disk is m=0.8kg, and the diameter D=75mm. The maximum spee...

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PUM

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Abstract

The invention relates to a transient balance method for one-disc flexible rotors. The invention is characterized in that: the vibration displacement signals along X direction and Y direction and the corresponding key-phase signals during the acceleration of the rotor are collected; the collected vibration displacement signals are processed, the deflection response, the speed signals along X direction and Y direction, the self-rotation angle acceleration of the rotor, the precession angle of the rotor as well as the speed of the precession angle are obtained, the speed of the precession angle of the rotor is partitioned, and the azimuth angle where the rotor is unbalanced is confirmed according to the result of the partitioning; the magnitude of the unbalanced quantity of the rotor is confirmed by adding one time trial weight; the balance weight is adjusted according to the confirmed azimuth angle and magtitude of the unbalanced quantity of the rotor, to finish the balancing work of the one-disc flexible rotor. With the method provided by the invention, the balancing of the one-disc flexible rotor can be conveniently and quickly realized by transient response; the needed startup times during the balancing is less and the balancing accuracy is high.

Description

technical field [0001] The invention relates to a single-disk flexible rotor transient balancing method, which is mainly used for solving the balancing problem of a rotor with high power, high rotating speed and slender shaft. Background technique [0002] At present, under the trend of rotating machinery developing towards high power, high speed, and slender shafts, the balance of rotors has become more prominent and important. The existing balance methods can be generally divided into two types: the modal balance method and the influence coefficient method. However, due to the characteristics of the single-disk rotor’s own structure, some unique methods have been proposed for its balance. The simple two-point method, The three-point method, the more complicated one is the trial plus weight cycle method. Both the two-point method and the three-point method use the drawing method to obtain the position and size of the balance weight, but they all need to start the machine a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/38G01M1/16G05D13/00
Inventor 黄金平任兴民
Owner NORTHWESTERN POLYTECHNICAL UNIV
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