Sealing of a radial gap between effusion tiles of a gas-turbine combustion chamber
A combustion chamber of a gas turbine with a combustion chamber wall to which effusion tiles are fastened which adjoin one another while forming a rim gap, with a seal being arranged in the area of said rim gap, characterized in that the effusion tiles at their rim facing the combustion chamber wall are provided with a bevel in order to form a sealing space, that a seal having a V-shaped cross-section is placed inside the sealing space and that the combustion chamber wall is provided with at least one recess to supply cooling air through the combustion chamber wall to that side of the seal facing the combustion chamber wall.
1. A combustion chamber of a gas turbine comprising:
effusion tiles,
a combustion chamber wall to which the effusion tiles are fastened, the effusion tiles positioned adjacent one another to form a rim gap between adjacent effusion tiles,
wherein the effusion tiles include bevelled rims at the rim gap forming a sealing space,
a seal having a V-shaped cross-section being positioned inside the sealing space, the V-shaped cross-section corresponding to a shape of the sealing space caused by the bevelled rims such that the seal is engageable with the bevelled rims to form a sealing contact between the V-shaped cross-section and the bevelled rims, the V-shaped cross-section including an open side open toward the combustion chamber wall,
the combustion chamber wall including at least one duct to supply cooling air through the combustion chamber wall to the open side to pressurize the seal against the bevelled rims to assist with the sealing contact;
wherein the seal has lateral sections which are sandwiched between the bevelled rims and the combustion chamber wall.
2. The combustion chamber in accordance with claim 1 , wherein the seal is formed from a sheet metal material.
3. The combustion chamber in accordance with claim 2 , wherein the lateral sections include retaining areas positioned adjacent the bevelled rims for retaining the seal with respect to the bevelled rims.
4. The combustion chamber in accordance with claim 1 , wherein the lateral sections include retaining areas positioned adjacent the bevelled rims for retaining the seal with respect to the bevelled rims.