Global Patent Index - EP 0991850 A1

EP 0991850 A1 2000-04-12 - INTERNALLY COOLED STEAM TURBINE SHAFT AND METHOD FOR COOLING THE SAME

Title (en)

INTERNALLY COOLED STEAM TURBINE SHAFT AND METHOD FOR COOLING THE SAME

Title (de)

TURBINENWELLE EINER DAMPFTURBINE MIT INTERNER KÜHLUNG SOWIE VERFAHREN ZUR KÜHLUNG EINER TURBINENWELLE

Title (fr)

ARBRE DE TURBINE A VAPEUR AVEC REFROIDISSEMENT INTERNE ET PROCEDE POUR REFROIDIR UN ARBRE DE TURBINE

Publication

EP 0991850 A1 (DE)

Application

EP 98936164 A

Priority

  • DE 9801618 W
  • DE 19727406 A

Abstract (en)

[origin: WO9900583A1] The invention relates to a steam turbine shaft (1), especially a partial high pressure and medium pressure turbine (23,25). A cooling duct (5) is arranged on the inside (4) of the turbine shaft (1) to conduct cooling vapour (6). The cooling duct (5) is connected to a discharge duct (7) and a feed duct (8). Turbine shaft(1) vapour is cooled by supplying steam(6) from the high pressure turbine(23) via the feed duct (8) to the medium pressure turbine (25) through the discharge duct (7). The invention also relates to a method for cooling a steam turbine shaft (1).

IPC 1-7 (main, further and additional classification)

F01D 5/08; F01D 25/12

IPC 8 full level (invention and additional information)

F01D 5/08 (2006.01); F01D 25/12 (2006.01)

CPC (invention and additional information)

F01D 5/081 (2013.01); F01D 5/085 (2013.01); F01D 25/125 (2013.01); F05D 2220/72 (2013.01)

Citation (search report)

See references of WO 9900583A1

Designated contracting state (EPC)

AT CH DE ES FR GB IT LI PT SE

EPO simple patent family

WO 9900583 A1 19990107; AT 213305 T 20020215; CN 1143945 C 20040331; CN 1261420 A 20000726; EP 0991850 A1 20000412; EP 0991850 B1 20020213; ES 2172905 T3 20021001; JP 2002508044 A 20020312; JP 4162724 B2 20081008; PT 991850 E 20020731; US 6227799 B1 20010508

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