Securing a heat shield block to a support structure, and heat shield

A heat shield adapted for a gas turbine that comprises at least one combustion chamber, the heat shield comprising:

• a support structure and a number of heat shield blocks,
• wherein the number of heat shield blocks are secured to the support structure and each comprises a cold side exposed to cooling air and facing the support structure and a hot side exposed to hot gases and opposite the cold side, and, in at least one heat shield block of the number of heat shield blocks, at least one recess is arranged in at least one circumferential side of the at least one heat shield block, said at least one circumferential side connecting the cold side to the hot side,
• an aperture, which connects the at least one recess to the cold side, extending in the at least one circumferential side perpendicularly to the cold side,
• a securing bolt adapted to be inserted into the aperture to secure the at least one heat shield block to the support structure, such that a bolt head of the securing bolt projects at least partially into the at least one recess and simultaneously the securing bolt passes through an angled plate in a penetration region of the angled plate,
• wherein the angled plate comprises a first limb, which extends substantially parallel to the at least one circumferential side, and a second limb, which extends into the at least one recess, wherein the first limb and the second limb adjoin each other at an angle edge, wherein the angled plate comprises a cold side of the angled plate that at least partly abuts the at least one heat shield block and a hot side of the angled plate opposite the cold side of the angled plate,
• wherein the angled plate comprises a reinforcing device that increases a resistance of the angled plate to bending caused by the securing bolt, and
• wherein the reinforcing device comprises a first side wall disposed on a side of the bolt head toward a mouth of the at least one recess and comprising:
• a first side wall cold end that runs along the angle edge on the hot side of the angled plate;
• and a first side wall hot end disposed between the first side wall cold end and the hot side of the at least one heat shield block, such that the first side wall extends across the mouth of the at least one recess, thereby at least partly closing the at least one recess and shielding the bolt head from hot gases present at the hot side during operation.