METHOD OF TESTING SYSTEM DESIGNED TO PROTECT TURBOMACHINE AGAINST OVERSPEED AT STARTING Russian patent published in 2014 - IPC F01D21/00 

FIELD: engines and pumps.

SUBSTANCE: invention is designed to test the system intended for protection of turbomachine against overspeed at starting and comprises the steps that follow. (a) Electronic control system receives the turbomachine starting signal to generate fuel cut-off control circuit initiation instruction to shut off the fuel cut-off element or to retain it as-closed. (b) Check up of fuel cut-off element closure state proceeding from data transmitted to electronic control system to represent the position of fuel cut-off element. (c) In case the results of check at step (b) is positive, said electronic control system transmits the instruction to fuel cut-off control circuit to permit opening of said element to proceed with turbomachine starting procedure. Finally, (d) in case the results of check at step (b) is negative, said electronic control system generates the signal of overspeed protection system fault.

EFFECT: simple and reliable test procedure.

11 cl, 5 dwg