EP 2261462 A1 20101215 - End wall structure for a turbine stage
Title (en)
End wall structure for a turbine stage
Title (de)
Turbinenstufenendwand
Title (fr)
Paroi d'extrémité pour un étage de turbine
Publication
Application
Priority
EP 09161706 A 20090602
Abstract (en)
The invention relates to a turbine stage comprising a circumferentially distributed row of adjacent airfoils between which there is a flow passage (18). The passage (18) has a surface, which in its unmodified form defines a datum (DR). A channel (30), located in the passage (18), extends in the direction of primary flow lines (PFL) from a point towards a leading edge line (20) to a point towards a trailing edge line (22). The channel (30) consists of two channel walls (32) angled relative to a datum (DR). Relative to the datum (DR), it has a low point (LP), two high points (HP), and a channel height (CH) measured between the low point (LP) and highest of the high points (HP). The channel (30) provides a means to reduce secondary flow losses.
IPC 8 full level
F01D 5/14 (2006.01); F04D 29/68 (2006.01)
CPC (source: EP US)
F01D 5/143 (2013.01 - EP US); F01D 5/145 (2013.01 - EP US); F05D 2250/611 (2013.01 - EP US); F05D 2250/71 (2013.01 - EP US)
Citation (applicant)
- US 2007059177 A1 20070315 - HARVEY NEIL W [GB]
- EP 1995410 A1 20081126 - MITSUBISHI HEAVY IND LTD [JP]
- N. W. ET AL.: "Nonaxisymmetric Turbine end Wall Design: Part I", ASME J. TURBOMACH., vol. 122, 2000, pages 278 - 285
- HARTLAND, J. C. ET AL.: "Nonaxisymmetric Turbine End wall Design: Part 11", ASME 122 J. TURBOMACH, vol. 122, 2000, pages 286 - 293
Citation (search report)
- [X] WO 9844240 A1 19981008 - SIEMENS AG [DE], et al
- [X] US 3481531 A 19691202 - MACARTHUR ALEXANDER D, et al
- [X] US 2008085190 A1 20080410 - LIANG GEORGE [US]
- [X] EP 1239116 A2 20020911 - GEN ELECTRIC [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2261462 A1 20101215; CN 101922311 A 20101222; JP 2010281320 A 20101216; US 2010303627 A1 20101202
DOCDB simple family (application)
EP 09161706 A 20090602; CN 201010233595 A 20100602; JP 2010125872 A 20100601; US 79235210 A 20100602