Global Patent Index - EP 1094200 A1

EP 1094200 A1 2001-04-25 - Gas turbine cooled moving blade

Title (en)

Gas turbine cooled moving blade

Title (de)

Gekühlte Gasturbinenrotorschaufel

Title (fr)

Aube rotorique refroidie de turbine à gaz

Publication

EP 1094200 A1 (EN)

Application

EP 99120722 A

Priority

  • EP 99120722 A
  • CA 2287577 A
  • JP 20318998 A

Abstract (en)

Gas turbine cooled moving blade is improved to have enhanced cooling efficiency by cooling air and enhanced sealing performance by sealing air. Cooling air 100, 101, 102 enters moving blade 1 from cooling passages 3, 4, 5. The air 100 becomes turbulent by turbulators 9a, 9b to enhance cooling effect for cooling of blade leading edge portion and flows out of blade tip portion. The air 101, 102 enters from blade trailing edge side to flow through serpentine passage having portions 6a, 6b, 6c, 6d, 6e and to become turbulent by turbulators 8 for cooling of the blade and flows out of the blade tip portion. Cooling efficiency is enhanced by the cooling air led into the blade leading edge side and trailing edge side. Sealing air 103, 104 passes through portions formed by knife edges 13, 14 to flow in serpentine form to then flow out into combustion gas flow obliquely upwardly. Sealing performance is enhanced and end portion 2a of platform 2 and inner shroud end portion of rear stage stationary blade are cooled as well by the cooling air which flows out. <IMAGE>

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

F01D 5/18; F01D 11/00

IPC 8 full level (invention and additional information)

F01D 5/18 (2006.01); F01D 11/00 (2006.01)

CPC (invention and additional information)

F01D 5/187 (2013.01); F01D 11/001 (2013.01); F05D 2240/81 (2013.01)

Citation (search report)

Designated contracting state (EPC)

CH DE FR GB IT LI

EPO simple patent family

EP 1094200 A1 20010425; CA 2287577 A1 20010422; JP 2000034902 A 20000202

INPADOC legal status


2004-08-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040204

2003-11-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030923

2002-01-16 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: CH DE FR GB IT LI

2001-04-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991116

2001-04-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FR GB IT LI

2001-04-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI