Annular combustor for a gas turbine
View Patent ↗The invention relates to an annular combustor ( 13 ) for a gas turbine ( 10 ), into which combustor ( 13 ) burners ( 14, 15 ) open on an inlet side, and which combustor ( 13 ) extends in the axial direction from the inlet side to an outlet side ( 33 ) and is lined on the insides with cooled liner segments ( 16, 17 ) for protection from the hot gases. In such a combustor, increased mechanical stability and flexibility in design and also simplification in manufacture and fitting are achieved by the liner segments ( 16, 17 ) being subdivided in the axial direction into a plurality of parts ( 16, 17 ) arranged one behind the other.
1. An annular combustor for a gas turbine, comprising: a wall, an inlet side, and an outlet side, the inlet side configured and arranged to accept burners opening on the inlet side, the combustor extending in an axial direction from the inlet side to the outlet side, cooled liner segments lining insides of the wall for protection from hot gases;
wherein the liner segments are subdivided in the axial direction into a plurality of non-overlapping and angled parts arranged one behind the other; and
a plurality of segment carriers, the liner segments being fastened to the segment carriers, the segment carriers being subdivided in the axial direction into a plurality of separate, detachably connected parts, each having substantially the same length as its corresponding linger segment, at least one junction of adjacent segment carriers forming together a wedge shape.
2. The combustor as claimed in claim 1 , wherein the liner segments are subdivided into two parts.
3. The combustor as claimed in claim 2 , wherein the liner segments are subdivided where the flow velocity of the hot gases is low.
4. The combustor as claimed in claim 3 , wherein the liner segments are subdivided in such a way that the lengths of individual segment parts in the axial direction are approximately the same.
5. The combustor as claimed in claim 1 , wherein the liner segments are convection-cooled.
6. The combustor as claimed in claim 5 , wherein the subdivided liner segments are separately convection-cooled.
7. The combustor as claimed in claim 6 , further comprising:
cooling medium flowing though those parts of the liner segments which are situated downstream, the cooling medium being released into a hot-gas flow of the combustor.
8. The combustor as claimed in claim 5 , further comprising:
transition channels provided between the subdivided liner segments, though which transition channels the convectively cooling cooling medium can flow from one part of the liner segments into the other part of the liner segments.
9. The combustor as claimed in claim 5 , wherein parts of the liner segments which are located downstream are cooled only by part of the mass flow provided overall for the cooling of the liner segments.
10. The combustor as claimed in claim 1 , further comprising:
at least one burner positioned at the inlet side.