Mixing dynamic balance method for crossing outer rotor

An external rotor, balanced technology, applied in the direction of electric components, control mechanical energy, electrical components, etc., can solve the problems of dangerous, complex, complex and changeable processes, etc.

Inactive Publication Date: 2011-02-02
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, if the whole balancing process is relatively smooth, it takes an average of two start-ups. However, due to the complex and changeable on-site conditions, it takes multiple start-ups to complete the balancing work. In addition to the procedures such as opening the cover, it often takes severa

Method used

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  • Mixing dynamic balance method for crossing outer rotor
  • Mixing dynamic balance method for crossing outer rotor
  • Mixing dynamic balance method for crossing outer rotor

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Embodiment Construction

[0058] In order to verify the superiority of the cross-outer-rotor hybrid dynamic balancing method of the present invention, the present invention will be further described in detail below in conjunction with embodiments.

[0059] The cross-outer rotor hybrid dynamic balancing method of the present invention is applied to the steam turbine shaft of a domestic petrochemical compressor unit, and the experimental bench structure based on the high, medium and low pressure rotors of the steam turbine generator set, and the smoke machine. The effect of the dynamic balance experiment Can verify the ability of the hybrid dynamic balance of this invention.

[0060] The detailed description of the cross-outer rotor hybrid dynamic balancing method is as follows:

[0061] Step one, select the appropriate balance surface: the coupling is the extended end of the two adjacent rotors. In the on-site unit structure, the coupling is generally exposed outside the unit or can be exposed by simply openin...

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Abstract

The invention discloses a mixing dynamic balance method for crossing an outer rotor, which comprises the steps: carrying out a dynamic balance work under the condition of covering by selecting a suitable balance surface crossing the outer rotor; utilizing a mixing dynamic balance method, i.e. a least-square influence coefficient balance method and a holographic dynamic balance technology, to calculate the balance adding weight, wherein the least-square influence coefficient balance method can enable the quadratic sum of the residual oscillation values of each measuring point to be minimum, and the holographic dynamic balance technology can combine a holographic spectrum principle and a flexible rotor dynamic balance technology; and fully utilizing the structure information and the vibration information of a set to enhance the precision and the efficiency of the dynamic balance on site. The mixing dynamic balance method for crossing the outer rotor can rapidly and effectively carry out the dynamic balance on the rotor and has the advantages of high speed and high accuracy.

Description

Technical field [0001] The invention belongs to the field of rotor dynamic balance, and relates to the research and application of the dynamic balance of a spanning outer rotor, that is, a rotor with an extended end. This method can be used to solve the balance problem of the outer rotor without removing the cover of the unit. Background technique [0002] Turbine machinery is a machine that converts the energy contained in the fluid working medium into mechanical work in rotating machinery. It is widely used in various sectors of the national economy such as power stations, aviation, and chemical industries, and is the main object of energy consumption. For large-scale steam turbine power generation equipment, the effective way to improve the efficiency of the unit is to increase the parameters and increase the capacity of a single unit or adopt a combined cycle technology, which means two aspects: (1) The rotor speed increases, generally in the first order Even working at spee...

Claims

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Application Information

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IPC IPC(8): H02K7/04
Inventor 温广瑞田利凯张西宁臧廷朋吴婷婷
Owner XI AN JIAOTONG UNIV
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