Development Of Static And Dynamic Characteristics Analysis Software For Large Turbine Generator Unit Shaft-bearing System

Large turbogenerator units in the power system, energy production processes, is amajor key equipment of the power system. However, China has independentlydeveloped and dedicated to the design of steam turbine unit rotor dynamics software hasbeen relatively scarce. In this paper, the school-enterprise cooperation project of theNational Natural Science Foundation of Harbin Turbine Company Limited Co., Ltd.,developed a large turbogenerator shaft static and dynamic performance analysis ofsoftware ", and referred to the RDC software.The software is divided into the shaft modeling, static analysis, bearing analysis,dynamic analysis of four major functional module, the static characteristics of the actualsteam turbine unit shaft, the bearing characteristics, critical speed, unbalance response,stability and other dynamic The static characteristics of the calculation and analysis ofthe system.RDC software analysis to calculate the function module design and development.Based on the rotor-bearing-base-sealed finite element model developed softwaremodeling module; developed in a variety of loading conditions to solve the turbinegenerator shaft static mechanical properties of static analysis module based on thetransfer matrix method; based on perturbation method and finite difference methoddeveloped cylindrical tile sliding bearings and tilting tile sliding bearing dynamiccharacteristics of the calculated bearing analysis module; developed based on improvedsubspace iteration method and the Gauss-Jordan method of shafting critical speed,unbalance response and stability of the computational analysis of the dynamics analysismodule.Based computer visual user interface software development techniques,development of auxiliary functions of the RDC software modules, the auxiliary functionmodules with model editing, before and after processing and other functions, supportingthe development of immediate help module and registration authentication module.Based on object-oriented software development model, the core function module andthe auxiliary function modules successfully developed on the basis, after the softwaresystem integration and testing aspects of the module package for a commercial "LargeTurbogenerator static and dynamic Characteristics of the calculation software ". Thesoftware kernel for solving the algorithm library file using the C++and Fortran mixedlanguage programming with a built-layered architecture developed by the integration ofeach functional module, and function interface to mapping and file memory mappingtechnology to solve a real-time data interaction problem. Established a cross-section rotary axis system model "and" Jeffcott rotor systemmodel and analytical solution of the model and software to solve the analysis andcomparison of the results, verify the accuracy of the calculation software; using RDCsoftware for a300MW actual turbo generator The shaft of the static and dynamiccharacteristics of a system of calculation and analysis results were consistent with theindustry technical standards and the actual rotor system dynamic design requirements.