Method of finding dynamic balance of rotor using vector triangle calculation approach

A vector triangle, rotor dynamic balancing technology, applied in the rotor field, can solve the problems of complex operation, inability to find dynamic balance, and promotion restrictions.

Inactive Publication Date: 2016-11-09
CHANGCHUN NO 2 CO GENERATION POWER
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] Rotors are widely used in many industries. For safety production and other reasons, some industries need to find dynamic balance for rotors regularly. For conventional rotors, you need to buy special instruments for dynamic balancing. It is complex and requires training, and the actual promotion is limited. Once the dynamic balance instrument is found to be faulty, the work of finding the dynamic balance will not be possible

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  • Method of finding dynamic balance of rotor using vector triangle calculation approach

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Embodiment Construction

[0026] The steps of the present invention are:

[0027] ①Choose the smooth and exposed part of the shaft near the fan impeller bearing, and apply a layer of diluted attachment. After coating, start the rotor to the working speed. Immediately withdraw the needle when touching the surface of the jumping rotor, draw 3 to 5 arcs in this way, and measure the vibration amplitude of the bearing seat with a vibration measuring instrument at the same time, record it as A 0 , after stopping, find out the midpoint of the dashed arc, connect the midpoint of each arc with a straight line and extend it to the fan impeller disc, and record this point as L 0 point;

[0028] ②In the impeller disc L 0 Turn the point against the rotation of the rotor at an angle of 90°, find a point and record it as point P, add a test weight W at the position of this point, start the rotor again to the working speed, use the same method of marking as step ① to find Mark the second marking point, and use a vi...

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Abstract

A method of finding the dynamic balance of a rotor using a vector triangle calculation approach belongs to the technical field of rotor. The invention aims to provide a method of finding the dynamic balance of a rotor using a vector triangle calculation approach, through which the dynamic balance of a rotor can be found through simple operation without any special instrument. The method comprises the steps as follows: (1) coating a fan impeller bearing with a layer of dilution attachment, starting a rotor to a working speed, and using a scriber to scribe arcs; (2) applying a trial weight W to a point P, and starting the rotor to the working speed again, and finding out a second scribing point through the same scribing approach in step (1); and (3) drawing a vector triangle to calculate a balance weight Q, wherein the balance weight Q should be added to a position symmetric with the position of an unbalance weight. The method of the invention is applicable to rotor dynamic balance finding of all rotating machines. The method is characterized in that high-speed dynamic balance finding of a rigid rotor and vibration elimination can be completed without any dynamic balance finding instrument. The method is simple, easy to learn and practical, and can be widely used.

Description

technical field [0001] The invention belongs to the technical field of rotors. Background technique [0002] Rotors are widely used in many industries. For safety production and other reasons, some industries need to find dynamic balance for rotors regularly. For conventional rotors, you need to purchase special instruments for dynamic balancing. It is complicated and requires training, and the actual promotion is limited. Once the dynamic balance instrument is found to be faulty, the work of finding the dynamic balance will not be able to be carried out. Contents of the invention [0003] The purpose of the present invention is to provide a method for finding the dynamic balance of the rotor with the vector triangle calculation method that does not need special instruments and can find out the dynamic balance of the rotor through simple operation. [0004] The steps of the present invention are: [0005] ①Choose the smooth and exposed part of the shaft near the fan impe...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01M1/38
CPCG01M1/32
Inventor任宪波姜文鑫石建发燕德国王波吴伟
OwnerCHANGCHUN NO 2 CO GENERATION POWER