METHOD OF GAS TURBINE ENGINE OPERATION Russian patent published in 2019 - IPC F04D27/02 

FIELD: engines and pumps.

SUBSTANCE: invention relates to protection of gas turbine engine from surging. Method for rapid prevention of surging is solved by method of operation of gas turbine engine with protective grid, according to which by experimental method prior to operation for all rotor speeds of compressor n there determined is initial value of pressure drop on protective grid P_in, constructing functional dependence P_in=f(n), and based on the value of the initial differential pressure value on the protective grid, setting the pressure difference corresponding to the motor surging P_surg, and warning value of pressure drop P_warn, which is not less than 70 % of the value P_surg, for normal shutdown of gas turbine engine; during operation of gas turbine engine on control panel output graph of time dependence of actual value of pressure drop on protective grid P_ac, warning value P_warn, values of pressure drop P_surg, and visually comparing these values; if actual value of pressure drop on protective grid Pac has reached or exceeded warning value P_warn, making a decision on normal shutdown of gas turbine engine and inspection of flow part of engine for presence of contamination, ingress of foreign objects or destruction of engine assemblies.

EFFECT: invention can be used in systems of protection and control of stationary gas turbine plants, gas pumping units.

4 cl, 2 dwg