Global Patent Index - EP 2261462 A1

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

EP 2261462 A1 20101215 (EN)

Application

EP 09161706 A 20090602

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)

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