Research On Steam Turbine Rotor Unbalance Vibration Issues

With the rapid development of our country electric power industry,Electric power production safety and reliability of generating set put forward higher request, Electricity in a timely manner to solve the vibration fault in the process of producing electricity is to improve the security, stability and reliability of the unit operation, and the ways to prolong service life, Is also a means of power generation enterprise economic benefit maximization. Security is one of the biggest economic benefit for power plants, And the size of the steam turbine generator vibration value is always one of the factors that affect the safe operation of the unit, So from engineering practice, discusses influencing factors of turbo-generator set machine vibration and fault handling practical technology in today still has important practical significance.In this paper, the application of vibration monitoring using BENTLY408 vibration data collection analyzer data acquisition, Analyzes the main parameters of vibration monitoring and the main operation parameters affecting the vibration, Directing against operation features of thermal power plant steam turbine generator set, Points out that the vibration measurement data acquisition unit to blunt car, no-load and load process vibration data analysis method respectively.Application of the principles and methods, Xilinhaote power plant# 4 unit after repair the vibration fault of appeared in the process of start, Hedge car, constant speed, loading process of vibration measuring and monitoring, According to measurement data and the vibration characteristics were analyzed, and the unit shafting vibration fault caused by the reason for the mass unbalance. Again according to the unit analysis of the structure and the factors influencing the vibration of bearing bush, decided to high speed dynamic balance method is used to eliminate the fault. According to the set of equilibrium solution, Balance after aggravating eliminated the unit vibration fault, After inspection unit vibration in good condition.Based on the#4 unit in Xilinhaote power plant vibration data acquisition, data analysis, fault diagnosis and treatment experience,Other large generator shafting vibration fault in the future processing has a certain guiding significance.