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1. (WO2018141739) WALL OF A HOT GAS PART AND CORRESPONDING HOT GAS PART FOR A GAS TURBINE

Pub. No.:    WO/2018/141739    International Application No.:    PCT/EP2018/052253
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Wed Jan 31 00:59:59 CET 2018
IPC: F01D 5/18
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: GOSSILIN, Ralph
HESELHAUS, Andreas
Title: WALL OF A HOT GAS PART AND CORRESPONDING HOT GAS PART FOR A GAS TURBINE
Abstract:
A wall (12) of a hot gas part comprises: ∙ a first surface (14) subjectable to a cooling fluid (17); ∙ a second surface (16) located opposite of the first surface and subjectable to a hot gas (15); and ∙ one film cooling hole (18) ∙ extending from an inlet area (13) within the first surface to an outlet area (19) within the second surface (16) ∙ leading the cooling fluid from the first to the second surface and ∙ comprising a diffusor section (20) ∙ located upstream of the outlet area with regard to a direction of the cooling fluid flow through the film cooling hole, ∙ bordered by a diffusor bottom and two opposing diffusor side walls and ∙ comprising a wedge element (26) of triangle-shape in a top view that protrudes in a stepwise manner from the diffusor bottom for dividing the cooling fluid flow into two subflows (17a, 17b) and forming of a pair of delta vortices.