A balance weight compensation method for bend rotor of rotating machinery

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (11) : 208-212.

LU Peng WU Yu-hua

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Abstract

The paper presents a compensation weight calculation method for bend rotor balance of rotating machinery. The compensated weight is calculated from the measured rotor bend curve to reduce vibration. Rotor bend in circular direction and along shaft axis are fitted using the triangular function and the polynomial function respectively on the base of rotor bend characteristics. Unbalance force in different shaft sections was divided to the selected two end sections using the force and the moment balance method to consider the influence of force distribution in the shaft. The symmetric force component is moved to rotor center while the ant symmetric force component is kept in the two end sections. The method was used to calculate the compensation weight for a 135MW turbine high pressure rotor successfully.

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Rotating machinery / Vibration / Balance / Bend rotor

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LU Peng WU Yu-hua. A balance weight compensation method for bend rotor of rotating machinery[J]. Journal of Vibration and Shock, 2016, 35(11): 208-212

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