EP 0887515 B1 20030813 - Blading with a helical ramp having a serial impingement cooling through a system of ribs in a double shell wall
Title (en)
Blading with a helical ramp having a serial impingement cooling through a system of ribs in a double shell wall
Title (de)
Beschaufelung mit einer schraubenförmigen Rampe mit serieller Prallkühlung durch ein doppelwandiges Rippensystem
Title (fr)
Aubage refroidi par rampe hélicoidale, par impact en cascade et par système à pontets dans une double peau
Publication
Application
Priority
FR 9707988 A 19970626
Abstract (en)
[origin: EP0887515A1] The turbine blade consists of a hollow aerodynamic surface extending radially between its foot and tip, having leading and trailing edges (5,6) and concave (7) and convex (8) lateral surfaces. The interior of the blade is fed with cooling air through its foot. The blade has two radial partitions (9,10) which connect its lateral walls and divide its interior cavity into forward (11), intermediate (12) and rear sections. The forward and intermediate sections are fed with air through an inlet at the foot of the blade, the air being discharged through outlets at its head. The rear section is fed with air through a separator inlet at the foot of the blade, the air passing out through slits (19) in the blade's trailing edge. In addition, the forward section of the blade cavity has a spiral channel for the air flow, and the intermediate section has a liner (40) with perforated sides set at a distance from the blade side walls to provide impact cooling. The rear section has an additional partition, dividing it into two linked chambers (15,16).
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F01D 5/187 (2013.01 - US); F01D 5/188 (2013.01 - EP US); F01D 5/189 (2013.01 - EP); F05D 2250/15 (2013.01 - EP US); F05D 2250/25 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0887515 A1 19981230; EP 0887515 B1 20030813; DE 69817094 D1 20030918; DE 69817094 T2 20040617; FR 2765265 A1 19981231; FR 2765265 B1 19990820; JP 3735201 B2 20060118; JP H1172003 A 19990316; RU 2146766 C1 20000320; US 5993156 A 19991130
DOCDB simple family (application)
EP 98401558 A 19980625; DE 69817094 T 19980625; FR 9707988 A 19970626; JP 18123098 A 19980626; RU 98112330 A 19980625; US 10420098 A 19980625