Seal structure

A seal structure comprising:

• a first member disposed so as to face a combustion gas flow passage formed around a rotor axis;
• a second member disposed adjacent to the first member so as to face the combustion gas flow passage;
• a third member disposed on the outer side of the combustion gas flow passage between a first end face of the first member and a second end face of the second member facing the first end face, and engaging with the first member and the second member;
• a heat-resistant coating formed on at least one of the first end face and the second end face, on the side of the face closer to the combustion gas flow passage;
• and
• a contact part disposed in the first end face and the second end face, further on the outer side of the combustion gas flow passage than the heat-resistant coating, and, when the first member and the second member move relatively toward each other, restricting the relative movement by directly coming in contact with the first member and the second member, or indirectly coming in contact with the first member and the second member through the third member, in a state where a clearance is left between the heat-resistant coating and at least one of the first end face and the second end face facing the heat-resistant coating,
• wherein the first member is a combustor,
• wherein the second member is a vane disposed on the downstream side in a rotor axis direction relative to the combustor,
• wherein the third member is a seal member disposed on the outer side of the combustion gas flow passage, and
• wherein the seal member includes:
• cooling channels formed in a certain region extending in a circumferential direction based on the rotor axis, at positions including a position on the upstream side in the rotor axis direction relative to a leading edge of the vane facing the upstream side in the rotor axis direction;
• and
• a third end face having a plurality of openings which are provided in the circumferential direction and from which cooling air flowing through the cooling channels is discharged.