PROCEDURE FOR OPERATING GAS TURBINE INSTALLATION Russian patent published in 2010 - IPC G01M15/14 

FIELD: machine building.

SUBSTANCE: at stage of project development for gas turbine installation (GTI) there is preliminary designed operating mathematic model of GTI operation. During factory delivery testing, before commencement of operation there are additionally measured temperature of gases behind a turbine of a gas generator t*_T, absolute air pressure behind a compressor P*_c, and atmospheric pressure P_a. There are determined reference values t_{T ref} and P_{c ref} under a controlled mode at accepted atmospheric conditions. Further, daily, during operation and under the working mode of the gas turbine installation, there are measured current values of parametres n_gg ^CUR, t*_T ^CUR, P_c ^CUR, t*_in ^CUR, P_a ^CUR on base of the first and the second functional dependencies with consideration of value Δn_gg. There is calculated P_{c pDay} ^CUR and t_{T mode} ^CUR. Also daily these parametres are compared with P_{c ref} and t_{T ref}. There are gained values ΔP_c=P_{c pDay}-P_{c ref} and Δt_T=t_{T pDay}-t_{T ref}, which in their turn are compared with preliminary specified values Δ₁ and Δ₂. Also, in case ΔP_C≥Δ₁ and Δt_T≤Δ₂, operation of the said GTI is continued without any restrictions. Yet, in case of ΔP_C<Δ₁ or Δt_T>Δ₂, the compressor is visually inspected for detection of damages. If damages are not revealed, gas-air circuit of the GTI is flushed.

EFFECT: raised reliability in determining necessity of engine flush due to increased accuracy and frequency of control over degree of dirtying during installation operation.