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Holographic dynamic balancing method of flexible rotor shaft system

A flexible rotor and shafting technology, applied in the field of fault diagnosis and control of rotating machinery, and dynamic balance, can solve difficult problems and achieve the effect of optimizing the balance result

Inactive Publication Date: 2003-03-05
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The influence coefficient method requires a process of repeated repeated test runs
For the multi-rotor, multi-support flexible shaft system, it is required to reflect the influence coefficient matrix of the test weight on the entire shaft system, which will become more difficult due to the need for multiple test runs
Due to the difficulties in the actual balance, we finally had to return to the influence coefficient method of the single rotor

Method used

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  • Holographic dynamic balancing method of flexible rotor shaft system
  • Holographic dynamic balancing method of flexible rotor shaft system
  • Holographic dynamic balancing method of flexible rotor shaft system

Examples

Experimental program
Comparison scheme
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Embodiment

[0063] Embodiment: The following is an example of the on-site dynamic balance of a steam turbine generator set in a power plant provided by the inventor using this method to illustrate the applicability and effectiveness of this method to the actual shaft system with multiple flexible rotors and multiple supports.

[0064] 1) Schematic diagram of unit structure and schematic diagram of sensor installation

[0065] see figure 1 The schematic diagram of the generator set (330MW) shown in the figure shows a schematic diagram of the unit structure and a schematic diagram of sensor installation, where (a) is a schematic diagram of the unit structure, and (b) is the A-direction view of (a).

[0066] 2) Unit balancing process and vibration data

[0067] This dynamic balance is passed in figure 1 The three counterweight planes shown are weighted to dynamically balance the high and medium pressure rotors. The balancing process is listed in Table 1:

[0068] Balance plane...

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Abstract

The invention is an axis-series holographic dynamic-balance method in the rotary mechanical-vibration diagnosis and control field. The method is based on the theory of holographic-chart information integration and on the base of getting all the sensor-vibration information on each rotor, integrates the vibration's breadth, frequency and phase information in each supporting place, and fully describes the axis-series vibration behavior in three-dimensional holographic-chart mode, and according to this, appraises the axis-series unbalance status and the adapted-weight effect, and puts forward a set of project applied to the holographic dynamic-balance of multiple-supporting axis series made up of multiple flexible rotors and then uses the computer to realize the optimization to the balance result.

Description

[0001] 1. Field [0002] The invention belongs to the dynamic balance technology in the field of fault diagnosis and control of rotating machinery, and relates to a holographic dynamic balancing method for a flexible rotor shaft system, which is mainly used for dynamic balancing of a multi-support shaft system composed of a plurality of flexible rotors in a rotating machine. 2. Background technology [0003] Research on dynamic balancing methods and techniques has always been an important topic in this field. At present, most of the theoretical research on dynamic balance is still in the research on the dynamic balance method and technology of double-supported single rotor, and the research on the vibration, behavior and balance method of the entire shafting system is still relatively small. The structure of the rotating machinery in the actual production of the pillar industries of the national economy such as electric power, chemical industry, and petrochemical is basically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/16
Inventor 屈梁生张西宁吴松涛
Owner XI AN JIAOTONG UNIV
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