Patent Number: 6,309,175

Title: Platform cooling in turbomachines

Abstract: The arrangements according to the invention and the method according to the invention serve to cool platforms in turbomachines. To this end, in two platforms 210, 210' arranged directly next to one another and having a separating gap 211 running between the platforms, at least one cooling passage 230 is arranged along the separating gap 211. In this case, the cooling passage 230 runs approximately parallel to the surface of the platforms 210, 210'. The cooling passage 230 is preferably designed as a slit-like recess in at least one side wall adjacent to the separating gap 211. If blades 220, 220' are arranged on the platforms 210, 210', the cooling passage 230 expediently runs approximately centrally between the blades. In addition, the cooling passage 230 preferably has a course similar to the course of the blade profile.

Inventors: Hahnle; Hartmut (Kussaberg, DE), Hall; Kenneth (Gainesville, GA), Harasgama; Sriwickrama Prithiviraj (Kunten, CH), Vogeler; Konrad (Kussaberg, DE)

Assignee: ABB Alstom Power (Schweiz) AG

International Classification: F01D 11/00 (20060101); F01D 5/18 (20060101); F01D 005/14 ()

Expiration Date: 10/30/2018