Tie rod-locking nut assembly and gas turbine including same

A tie rod and tie rod-locking nut assembly, the tie rod arranged to pass through a center of a plurality of compressor rotor disks and turbine rotor disks and having one end engaged with a most upstream-side one of the compressor rotor disks and the other end engaged with the tie rod-locking nut assembly, the tie rod-locking nut assembly comprising:

• a tie rod-locking nut threaded onto a jack bolt;
• a jack bolt-locking nut inserted between the tie rod-locking nut and the jack bolt;
• an anti-loosening washer formed to wrap around an outer circumferential surface of the jack bolt-locking nut to prevent loosening of the jack bolt-locking nut;
• and
• a locking plate formed to cover the anti-loosening washer and engaging with an outer circumferential surface of the tie rod.

A gas turbine comprising:

• a compressor suctioning and compressing external air and having a plurality of compressor rotor disks;
• a combustor mixing fuel with compressed air and combusting an air-fuel mixture;
• a turbine section having a plurality of turbine blades mounted on a plurality of turbine rotor disks so that the turbine blades is rotated by the combustion gases discharged from the combustor;
• and
• a tie rod having one end engaged with a most upstream-side one of the compressor rotor disks and the other end engaged with a tie rod-locking nut assembly, the tie rod-locking nut assembly comprising:
• a tie rod-locking nut threaded onto a jack bolt;
• a jack bolt-locking nut inserted between the tie rod-locking nut and the jack bolt;
• an anti-loosening washer formed to wrap around an outer circumferential surface of the jack bolt-locking nut to prevent loosening of the jack bolt-locking nut;
• and
• a locking plate formed to cover the anti-loosening washer and engaging with an outer circumferential surface of the tie rod.