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Dynamic balance method of bending moment of rotating mechanical rotor biplane

A rotating machinery, two-plane technology, used in static/dynamic balance testing, machine/structural component testing, measuring devices, etc., to solve problems such as measurement accuracy limitations and affecting the performance of dynamic balancing machines

Inactive Publication Date: 2013-05-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dynamic characteristics of the pendulum system directly affect the performance of the dynamic balancing machine, so its measurement accuracy is limited

Method used

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  • Dynamic balance method of bending moment of rotating mechanical rotor biplane
  • Dynamic balance method of bending moment of rotating mechanical rotor biplane
  • Dynamic balance method of bending moment of rotating mechanical rotor biplane

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Experimental program
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Embodiment Construction

[0059] This embodiment is based on figure 1 The rotor test bench shown is taken as an example, and the rotor biplane unbalance correction method is analyzed based on the measured bending moment. refer to Figure 2-7 .

[0060] The method for completing rotor biplane unbalance correction by measuring the bending moment involved in this embodiment is:

[0061] A. Install the rotor to be tested on the dynamic balance testing bench through the universal joint;

[0062] B. Install an eddy current sensor on the shaft section of the dynamic balance test bench, align the eddy current sensor with the keyway, and measure the pulse signal of the speed, which is used as a benchmark for multi-measuring point synchronous whole-cycle sampling analysis;

[0063] C. Select two measuring sections on the surface of the rotating shaft of the dynamic balance testing bench to install the bending moment measuring points. These two measuring sections are respectively located on the two universal j...

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PUM

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Abstract

The invention discloses a dynamic balance method of the bending moment of a rotating mechanical rotor biplane. The unbalanced correction of the rotator biplane is achieved by testing the bending moment in the rotating process of the rotor. The dynamic balance method does not need to test mass, the unbalance force and corresponding angles on the rotor biplane can be directly calculated by testing the bending moment. The dynamic balance method is an on-line dynamic balance method, and has the advantages of being fast and convenient, and capable of achieving mass operation of the dynamic technique of the rotating mechanical rotor biplane. A rotor dynamic balance theory needed to be commanded is low, and the method is suitable for most technical staff.

Description

technical field [0001] The invention relates to a dual-plane bending moment dynamic balancing method for a rotary machine rotor. Background technique [0002] Rotating machinery, such as steam turbines, generators, compressors, fans, pumps, etc., are key equipment in industries such as electric power, petrochemical, aviation, and metallurgy. Vibration is the "thermometer" of these rotating machinery, which directly reflects the safe and stable operation of these equipment, and imbalance is the main factor causing most vibrations. Therefore, how to quickly and accurately correct the dynamic unbalance of the rotating machinery rotor has been a problem that people have been paying attention to. According to the theory of rotor dynamics, no matter how complicated the unbalanced distribution on the rotor is, for each unbalanced force, it can be decomposed into two end faces to obtain the unbalanced force on the two end faces. The unbalanced force can be eliminated by adding equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/38
Inventor 张世东杨建刚
Owner SOUTHEAST UNIV
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