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Vector spectrum based dynamic balance method for flexible rotor

A rotor dynamic balance and flexible rotor technology, applied in the field of rotor dynamic balance, rotating machinery fault diagnosis and vibration control, can solve the problems of many balance error transmission links, large balance errors, difficult to control, etc., to avoid one-sidedness and improve accuracy and efficiency, intuitive operation

Active Publication Date: 2009-10-14
郑州恩普特科技股份有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual balance, due to the many links of balance error generation and transmission, and it is not easy to control, a small amount of original error may eventually produce a large balance error after accumulation, resulting in balance failure.

Method used

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  • Vector spectrum based dynamic balance method for flexible rotor
  • Vector spectrum based dynamic balance method for flexible rotor
  • Vector spectrum based dynamic balance method for flexible rotor

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Experimental program
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specific Embodiment approach

[0029] The specific implementation mode of the patent of the present invention is:

[0030] (1) Rotor unbalance fault identification based on vector spectrum

[0031] According to the dual-channel eddy current signal collected on a section at one end of the upper rotor of the unit, the vector spectrum analysis is carried out, and it can be directly determined whether the rotor belongs to the rotor unbalance fault from the spectrum. The method of discrimination is as follows: a spectral line with the highest amplitude can be found from the main vibration vector diagram of the vector spectrum. If the vibration value exceeds the standard, the rotor is likely to be unbalanced. Then judge from the other end of the rotor. If the situation is similar, it can basically be judged as an unbalanced fault of the rotor, and on-site rotor dynamic balancing is required.

[0032] Refer to figure 2 , the figure is from a CO 2 A set of vibration data measured by a pair of eddy current senso...

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Abstract

The invention discloses a vector spectrum based dynamic balance method for flexible rotors. Imbalance failure of the rotors on site can be truly and objectively found by a vector spectrum analysis software, the power-frequency principal vibration vector of the rotors on vibration measuring sections can be extracted by vector spectrum filtering method by measuring the original vibration signals of two mutually perpendicular channels on the vibration measuring sections; the principal vibration vector is used as the substitute of the amplitude and the phase of the power frequency of the rotors extracted in traditional single-channel signals; on-site dynamic balance is conducted by combing with influence coefficient method, and the balance process is less dependent on the experience and knowledge of operators, can greatly improve the efficiency and accuracy of the flexible rotor dynamic balance and is a highly integrated computer-assisted on-site dynamic balance method.

Description

technical field [0001] The patent of the present invention belongs to the technical field of on-site dynamic balancing of rotors, and specifically relates to the field of fault diagnosis and vibration control of rotating machinery. Background technique [0002] At present, there are many on-site dynamic balancing methods for flexible rotors, which can be roughly classified into two categories, namely, the mode balance method and the influence coefficient method. Separately balanced, it has the characteristics of high-speed balancing accuracy and less test times. However, the vibration-shape balancing method requires first to obtain the vibration-shape data of each order of the rotor. At the same time, this method requires the operator to have rich experience and knowledge, and it is not easy. The use of computer-aided balancing work is severely limited in practical applications. The influence coefficient method is less dependent on the operator's experience and knowledge, a...

Claims

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Application Information

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IPC IPC(8): G01M1/38
Inventor 雷文平韩捷陈宏孙俊杰董辛旻
Owner 郑州恩普特科技股份有限公司
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