F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 5/14 (2006.01) B23P 15/02 (2006.01) F01D 5/18 (2006.01)
Patent
CA 2361978
The present invention relates to a gas turbine blade (1) in which a slot (15) that is parallel to the approach flow edge (9) is produced in the area of the approach flow edge of a platform (3) by erosion, into which cooling air (25) is introduced from the underside (8) of the platform (3) to bring about impingement cooling and is then exhausted at the upper side (7) of the platform (3) to bring about film cooling. This results in an efficient cooling system for the approach flow area of the platform (3). The present invention also relates to a method for manufacturing a gas turbine blade (1), in which the channels (17) that lead into the slot (15) are made by laser boring, the wall of the slot (15) being protected by a Teflon strip (33).
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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