Gas turbine combustor
The gas turbine combustor includes a swirler lip on the air hole plate periphery, protruding toward a chamber, and a spring seal in an area for fitting the liner and the plate/lip. The spring seal has an air hole for passage of part of the combustion air introduced in the gap between the outer periphery of the air hole plate and the liner. The swirler lip has an air hole which introduces part of the combustion air passing through the spring seal air hole into the chamber. The liner has an air hole facing the spring seal air hole, to introduce part of air from outside the liner into the gap between the outer periphery of the air hole plate and the liner. A turn guide for rectifying a combustion air flow is provided at the liner end portion on the side for fitting the liner and air hole plate.
1. A gas turbine combustor comprising:
a liner constituting a chamber of the gas turbine combustor;
a plurality of fuel nozzles to inject fuel into the chamber; and
an air hole plate being located downstream of the fuel nozzles in a fuel flow direction and having a plurality of air holes corresponding to the fuel nozzles, wherein
a swirler lip is provided on an outer periphery of the air hole plate in a manner to protrude toward the chamber,
a spring seal is provided in an area where the liner is fitted to the air hole plate and the swirler lip,
the spring seal has an air hole to enable part of combustion air introduced into a gap between the outer periphery of the air hole plate and the liner to pass,
the swirler lip has an air hole to introduce part of the combustion air passing through the air hole of the spring seal into the chamber,
the liner has an air hole in a position to face the air hole of the spring seal, in order to introduce part of the combustion air from outside of the liner into the gap between the outer periphery of the air hole plate and the liner, and
a turn guide for rectifying a flow of combustion air is provided at an end portion of the liner on a side where the liner is fitted to the air hole plate.
2. The gas turbine combustor according to claim 1 ,
wherein the turn guide is inclined so that the combustion air flowing along a side face of the liner is guided outward in an axial direction of the air hole plate.
3. The gas turbine combustor according to claim 1 ,
wherein the air hole of the liner is provided in plurality in an axial direction of the liner.
4. The gas turbine combustor according to claim 1 ,
wherein the air hole of the liner is provided in plurality in a circumferential direction of the liner.
5. The gas turbine combustor according to claim 1 ,
wherein the air hole of the spring seal is provided in plurality in an axial direction of the spring seal.
6. The gas turbine combustor according to claim 1 ,
wherein the air hole of the spring seal is provided in plurality in a circumferential direction of the spring seal.
7. The gas turbine combustor according to claim 1 ,
wherein the air hole of the swirler lip is provided in plurality in an axial direction of the swirler lip.
8. The gas turbine combustor according to claim 1 ,
wherein the air hole of the swirler lip is provided in plurality in a circumferential direction of the swirler lip.
9. The gas turbine combustor according to claim 1 ,
wherein the air hole of the swirler lip is inclined so that part of the combustion air is guided toward a downstream side of the chamber.