Analysis on Gas Turbine Rotor Life Based on Elastoplastic Theory

doi:10.12096/j.2096-4528.pgt.18183

Abstract

Abstract:

A compressor rotor crack accident occurred in 13E2 gas turbine used for combined cycle in Shenzhen Nantian Power Plant. To accurately predict the fatigue life of similar units, based on elastic-plastic theory, considering the influence of temperature field and centrifugal force on fatigue life of compressor compressor rotor, the finite element thermo-solid coupling numerical simulation model of the compressor rotor of the gas turbine was established. Based on the low cycle fatigue theory, it is calculated that the fatigue life of the gas turbine compressor rotor is 5333 times, and the actual fatigue life of the compressor rotor of the gas turbine in the power plant is 4435 times. The calculation error is within 20%. This method can be used to estimate the rotor life of gas turbine accurately.

Key words: turbine, rotor, low cycle fatigue, numerical simulation

CLC Number:

TK47

Jiwei DING,Yan LI. Analysis on Gas Turbine Rotor Life Based on Elastoplastic Theory[J]. Power Generation Technology, 2020, 41(2): 202-205.

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