EP 3976934 A1 20220406 - METHOD FOR UPGRADING A GAS TURBINE AND GAS TURBINE
Title (en)
METHOD FOR UPGRADING A GAS TURBINE AND GAS TURBINE
Title (de)
VERFAHREN ZUR MODERNISIERUNG EINER GASTURBINENANLAGE SOWIE GASTURBINENANLAGE
Title (fr)
PROCÉDÉ D'AMÉLIORATION D'UNE TURBINE À GAZ ET TURBINE À GAZ
Publication
Application
Priority
- DE 102019211418 A 20190731
- EP 2020068226 W 20200629
Abstract (en)
[origin: WO2021018495A1] The invention relates to a method for upgrading a gas turbine (1), said method comprising the steps of: a) removing all guide vanes (4) of the first guide vane stage; b) replacing the removed guide vanes (4) of the first guide vane stage with new or reconditioned guide vanes (4), wherein blade platforms (11) of the new or reconditioned guide vanes (4) are provided with cooling air bores (19) which fluidically connect a cooling air supply duct (12) to the annular gap (10) and open into the annular gap (10), and wherein the cooling air bores (19) are arranged in such a manner that more cooling air bores (19) open into regions of an annular gap (10) that are arranged radially inwards from leading edges (13) of the guide vanes (4) than in other regions of the annular gap (10). The invention further relates to a correspondingly upgraded gas turbine (1).
IPC 8 full level
F01D 9/04 (2006.01); F01D 11/00 (2006.01); F01D 25/12 (2006.01)
CPC (source: EP US)
F01D 5/186 (2013.01 - US); F01D 9/023 (2013.01 - EP); F01D 9/041 (2013.01 - EP US); F01D 11/005 (2013.01 - EP); F01D 25/12 (2013.01 - EP US); F05D 2230/80 (2013.01 - EP US); F05D 2240/12 (2013.01 - EP); F05D 2240/121 (2013.01 - EP US); F05D 2240/15 (2013.01 - EP US); F05D 2240/35 (2013.01 - EP); F05D 2240/81 (2013.01 - EP US); F05D 2260/201 (2013.01 - EP); F05D 2260/202 (2013.01 - EP US)
Citation (search report)
See references of WO 2021018495A1
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2021018495 A1 20210204; DE 102019211418 A1 20210204; EP 3976934 A1 20220406; EP 3976934 B1 20230614; US 11879346 B2 20240123; US 2022268172 A1 20220825
DOCDB simple family (application)
EP 2020068226 W 20200629; DE 102019211418 A 20190731; EP 20739891 A 20200629; US 202017629375 A 20200629