Heat shield block and use of a heat shield block in a combustion chamber
AssigneeSiemens Aktiengesellschaft
InventorsUlrich Bast, Uwe Rettig, Christine Taut
Life of this patent
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Abstract
The invention relates to a heat shield block, in particular for lining a combustion chamber wall, having a hot side which can be subjected to a hot medium, a wall side opposite the hot side, and a peripheral side adjoining the hot side and the wall side. A tension element which can be prestressed to a prestress (Fz) is attached to the peripheral side, release of a fragment, formed during a fracture, of the heat shield block being reliably prevented by the prestress (Fz) of the tension element. The invention also relates to the use of a heat shield block, in particular for lining a combustion chamber wall of a gas turbine.
Claims15
A heat shield block for lining a combustion chamber of a combustion engine comprising:
- a hot side wall which is subjected to a hot medium (M), a wall side opposite the hot side, and a peripheral side adjoining the hot side wail and the wall side opposite the hot side, a tension element which is prestressed to a predetermined prestress level (Fz) being attached to the peripheral side, wherein the tension element maintains the heat shield block intact due to the tension element being under prestress (Fz) and prevents releasing of a fragment of the heat shield block being formed during a fracture of the heat shield block, wherein the tension element is stress-free at a ambient temperature, and in that the tension element is under the prestress (Fz) at an application temperature above ambient temperature.
A heat shield block for lining a combustion chamber of a combustion engine comprising:
- a hot side wall which is subjected to a hot medium (M);
- a wall side opposite the hot side;
- a peripheral side adjoining the hot side wall and the wall side opposite the hot side;
- and
- a tension element which is prestressed to a predetermined prestress level (Fz) being attached to the peripheral side, wherein the tension element maintains the heat shield block intact due to the tension element being under prestress (Fz) and prevents releasing of a fragment of the heat shield block being formed during a fracture of the heat shield block, wherein the tension element is made of a ceramic material.
A heat shield block for fining a combustion chamber of a combustion engine comprising:
- a hot side wall which is subjected to a hot medium (M);
- a wall side opposite the hot side;
- a peripheral side adjoining the hot side wall and the wall side opposite the hot side;
- and
- a tension element which is prestressed to a predetermined prestress level (Fz) being attached to the peripheral side substantially between the hot side wall and the wall side opposite the hot side, wherein the tension element maintains the heat shield block intact due to the tension element being under prestress (Fz) and prevents releasing of a fragment of the heat shield block being formed during a fracture of the heat shield block.
Dependencies are inferred from the claim text.