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Development of Turbine Rotor Dynamic Balance System

Author: HuTao
Tutor: CuiTianXiang
School: Harbin Institute of Technology
Course: Instrument Science and Technology
Keywords: steam turbine dynamic balance influence coefficient method
CLC: TH877
Type: Master's thesis
Year: 2008
Downloads: 115
Quote: 0
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Abstract


With the development of large turbine, to operate steam turbine safely and efficiently is becoming increasingly important. The DH-90/12 dynamic balance machine in Harbin Steam Turbine Co. Ltd. was used to balance a long axial turbine rotor. The dynamic balance machine system was produced in the 1980s. Each instrument of the system is separated meter. The system can not meet the system running and dynamic balance requirements of new rotor products. Considering this status, one new dynamic balance system was developed here using new dynamic balancing software in this thesis.The thesis summed up the state of the art of rotor balance technology in domestic and abroad. After comparing the dynamic balance methods, the influence coefficient method was used as dynamic balance method in the new system. The hardware was composed of one IPC-586VDF (C) IPC, four Bentley 7200 proximity transducers and one CONTEC simulation E-Series 16 bit A/D AD16-16U (PIC) EV data acquisition board.The system application software was programmed in Visual Basic 2005 based on Visual Studio 2005 software platform. Application Software mainly included the vibration measurement and analysis software and the dynamic balance calculation software. The vibration measurement software provided data analysis both in time domain and frequency domain and screen display. The dynamic balance calculation software adopted the least squares method and weighted least squares method.By the end, the thesis not only analyzed the system measurement uncertainty and correction error but also explained the causes of correction error.This development of turbine rotor dynamic balance system refers to relevant national standards and meets user requirements.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Material testing machine and test equipment > Dynamic Balancing Equipment
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