C. Maravilla Herrera, S.V. Yepifanov
A
life-time monitoring system is
developed to predict the life-time of engines used in a gas pumping station.
Five models are proposed to calculate the static gas pressure at the inlet of
the turbine’s rotor; all the models are based on thermodynamic process taking
place in the engine. Coefficients that include the not measured engine parameters
are calculated by regression. The engine working cycle was simulated to
generate data for model development and verification. Additional engine working
cycle simulations were performed taking into account the influence of engine
deterioration and operation conditions variation. Ten different defects for additional
verification of the models were used. The model that describes the best the
behavior of the gas pressure has been found.
Key words: gas
turbine engine, diagnostics, pressure, thermodynamic
models, life-time monitoring.