Gas turbine engine system

Abstract

A gas turbine engine system 1 comprises a gas turbine engine 2; a purge gas supply line 4 connected to a first connection section P1 on the fuel supply line 3 connected to the gas turbine engine 2; a fuel discharge line 7 connected to a second connection section P2 of the fuel supply line 3 which is located downstream of the first connection section P1; a blowoff valve 72 disposed on the fuel discharge line 7, and a passage switching device 50 which performs switching of the fuel supply line 3 between a fuel supply mode and a purge mode. A check valve 73 and a flame arrester 74 are disposed on the fuel discharge line 7 at locations that are downstream of the blowoff valve 72.

Dependencies are inferred from the claim text.