Combustion chamber of a combustion system
View Patent ↗A combustion chamber of a combustion system has a combustion space, a support structure, a support element, and a heat shield. The heat shield has at least two segments, and each segment includes a liner element facing the combustion space and has an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and a retaining device. The retaining device fixes the respective liner element on the support structure via the support element and forms a flange region that fits over the edge region of the respective liner element. The retaining device forms a first cooling passage with the support element and has at least one through-opening in the flange region. A cooling gas flows through the through.opening from the first cooling passage to the edge region.
1. A combustion chamber of a combustion system, the combustion chamber comprising:
a combustion space;
a support structure;
a support element disposed on the support structure; and
a heat shield with at least two segments, each segment including a liner element facing the combustion space and having an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and each segment including a retaining device fixing the respective liner element on the support structure via the support element, each retaining device including a flange region that fits over a portion of the edge region of the respective liner element, the retaining device and support element forming a first cooling passage therebetween, the retaining device further having at least one through-opening extending through the flange region from the first cooling passage toward the edge region so as to provide a passage for a cooling gas flowing through the through-opening from the first cooling passage to the edge region.
2. The combustion chamber as recited in claim 1 , wherein the at least one through-opening includes at least two through-openings and wherein at least one of a distance between the at least two through-openings and a diameter of the at least two through-openings is adapted to a local cooling requirement.
3. The combustion chamber as recited in claim 1 , wherein each segment includes an inner liner element disposed between the support structure and the respective liner element, the inner liner element forming at least one of a second cooling passage with the support structure and a third cooling passage with the liner element.
4. The combustion chamber as recited in claim 3 , wherein the inner liner elements forms the second cooling passage with the support structure, and further comprising at least one connecting passage between the first and second cooling passages.
5. The combustion chamber as recited in claim 3 , wherein the inner liner elements forms the second cooling passage with the support structure, and wherein a pressure in the second cooling passage is greater than a pressure in the first cooling passage.
6. The combustion chamber as recited in claim 3 , wherein the inner liner elements forms the third cooling passage with the liner element, and wherein a pressure in the first cooling passage is greater than a pressure in the third cooling passage.
7. The combustion chamber as recited in claim 1 , wherein the at least one through-opening includes at least one row of through-openings extending parallel to the gap.
8. The combustion chamber as recited in claim 3 , wherein the respective liner element has at least one cooling rib projecting into the third cooling passage.
9. The combustion chamber as recited in claim 3 , wherein the respective retaining device fastens the respective inner liner element on the support element.
10. The combustion chamber as recited in claim 1 ; wherein the combustion system is a gas turbine.
11. A combustion system, comprising:
a combustion chamber that includes:
a combustion space;
a support structure;
a support element disposed on the support structure; and
a heat shield with at least two segments, each segment including a liner element facing the combustion space and having an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and each segment including a retaining device fixing the respective liner element on the support structure via the support element, each retaining device including a flange region that fits over a portion of the edge region of the respective liner element, the retaining device and support element forming a first cooling passage therebetween, the retaining device further having at least one through-opening extending through the flange region from the first cooling passage toward the edge region so as to provide a passage for a cooling gas flowing through the through-opening from the first cooling passage to the edge region.