Comparative Analysis of GT Exhaust Cylinder in Different Supports
In order to understand the difference of gas turbine rotor center and the stress of support plate under the different loads and different support forms,this paper models the gas turbine exhaust cylinder and simplifies it to gain radial support and tangential support models.Constraints and loads are added to the calculation model according to the actual operating conditions of the gas turbine,abtaining the center position of the rotor and the stress distribution of the support plate.The differences between the two support forms are clarified by comparing the calculated results.The parameters of exhaust cylinder bearing seat after long-term operation are measured and their results are analyzed.The results show that the radial support has good support stiffness,and the tangential support can ensure good alignment under thermal load with its plate having low level stress.
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