METHOD OF CONDITION MONITORING AND MAINTENANCE OF GAS TURBINE ENGINE DURING ITS OPERATION Russian patent published in 2015 - IPC G01M15/14 

FIELD: engines and pumps.

SUBSTANCE: method comprises the fuel pressure measurement in the afterburner manifold of the engine which is performed periodically, comparison of the obtained value of fuel pressure in the afterburner manifold of the engine with the maximum allowable one, which is pre-set for this type of engines, and at excess of the latter - cleaning of the afterburner collector and nozzles. Medium from its internal cavity is evacuated by means of evacuation device, for example a vacuum pump, and the pressure created by the evacuation device is changed periodically. Medium is passed through the reference filter which is periodically checked for particles of coke deposits in it, and by their presence in the filter the level of the manifold cleaning is obvious. The manifold cavity is filled with flushing liquid and after holding it is removed from the manifold internal cavity towards the direction, opposite to fuel supply, meanwhile for flushing liquid it is possible to use the flushing liquid TSR-5050 or ZOK-27. The cleaning on the working engine is performed for this purpose the engine is brought to the low acceleration mode, then by increase of rotor rotation speed they are brought to the maximum unboosted mode, maintained in it and the rotor rotation speed reduced down to the low acceleration mode. The maximum allowable value of pressure in the manifold of the afterburner is obvious by pressure in the manifold at minimum allowable fuel consumption through the clogged fuel manifold, at which normal functioning of the afterburner chamber without blackout and loss of traction is ensured.

EFFECT: improvement of quality of cleaning of manifold and nozzles without engine disassembly.

8 cl, 1 dwg