Research On Strength Analysis Of Gas Turbine Air Intake System

With the requiring of environment protection due to the power plant emissions, the power generation from the natural gas, especially the advanced technique of distributed energy system by means of the industrial gas turbines, demonstrates a huge market potential and the good prospect. For the whole industrial gas turbine system, it is believed that the intake system is one of the most important auxiliary equipment, which is used to handle the inlet air of the system. Therefore, the research on the air-intake system should be beneficial to the efficiency improvement and safe operation of the gas turbine system.In this thesis, the structure of gas turbine air-intake system is introduced based on a certain type of industrial gas turbines. The basic application theories related to design and performance analysis are presented, as well as, the theories are used to analyze the pneumatic performance of the air-intake system in detail. The strength performance of two parts, such as the upper and the lower part of the air-intake system, is calculated respectively by the use of a commercial FEM code. The loads on the system, such as the structure weight, the wind load, the roof load, the living load, the seismic load and the surging boundary load, are all considered in these calculations and reasonably combined to form the different working conditions according to the real environment. It is based on the calculation results that the strength performance of the air-intake system are analyzed and discussed under the different working conditions. Some important conclusions are summarized and put forwards in this paper, which can be considered as the theoretical basis for the product development of the air-intake system.