A Method of Multi-point Field Dynamic Balancing Based on Fast Algorithm

Abstract

The invention discloses a fast-algorithm-based multi-point on-site dynamic balancing method. Vibration amplitudes at an increasing speed and a working speed of a rotor system are measured, an unbalance amount is obtained roughly, and a test weight increasing mass is estimated; a balance surface is divided equal into N parts, a test mass block is loaded, and vibration quantities are measured; and all vibration quantities are inputted into a fast algorithm data processing program to obtain a balance weight mass and a light point location directly, loading and trial running are carried out, and a residual unbalance amount is calculated. According to the method disclosed by the invention, multi-point dynamic balance calculation is completed in the fast algorithm; the support bearing and basic factors of the rotor are taken into consideration; the over-unbalance risk is reduced; and the method is realized rapidly and accurately and can be applied to a complicated rotor structure system. On the basis of one-time multi-point on-site dynamic balancing, dynamic unbalance alignment of the rotor is realized fast and effectively.

Description

technical field [0001] The invention belongs to the technical field of rotor dynamic balance of rotating machinery, and relates to a multi-point on-site dynamic balance method based on a fast algorithm. Background technique [0002] Rotating machinery, which is widely used in important industries such as electric power, chemical industry, machinery, aviation, vehicles and ships, is the main object of converting and transmitting energy. The rotor system is a key component of a rotating machine, and its operation stability is directly related to the safe and normal operation of the entire rotating machine. Due to a series of factors such as the uneven material of the rotor, the unbalance of the coupling, the machining error of the rotor, the unbalance of the impeller, etc., the rotor system cannot achieve complete axial symmetry during operation, that is, there is a certain amount of unbalance. The vibration generated by dynamic unbalance is not only very destructive to compo...

AI Technical Summary

Problems solved by technology

The traditional on-site dynamic balance processing method is affected by measurement errors, drawing errors and calculation errors, etc., its accuracy is low and the applicable rotor structure is single

In addition, the existing on-site dynamic balancing methods require a large number of operations and steps such as calculation and drawing, which take a long time, and may even cause the rotor system to bend when the "parking" time is too long, resulting in large economic losses

In addition, the trial weight with reference to empirical formulas or empirical data may cause "over-unbalance", causing non-negligible damage to equipment

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