EP 2294285 A2 20110316 - BLADE CASCADE FOR A FLOW ENGINE AND FLOW ENGINE COMPRISING SAID BLADE CASCADE
Title (en)
BLADE CASCADE FOR A FLOW ENGINE AND FLOW ENGINE COMPRISING SAID BLADE CASCADE
Title (de)
SCHAUFELGITTER FÜR EINE STRÖMUNGSMASCHINE UND STRÖMUNGSMASCHINE MIT EINEM SOLCHEN SCHAUFELGITTER
Title (fr)
GRILLE D'AUBES POUR UNE TURBOMACHINE ET TURBOMACHINE COMPORTANT UNE TELLE GRILLE
Publication
Application
Priority
- DE 2009000876 W 20090624
- DE 102008031781 A 20080704
Abstract (en)
[origin: WO2010000229A2] The invention relates to a blade cascade for a flow engine, especially a steam turbine, comprising a plurality of profiled blades, especially profiled rotor blades (1), having an intake side (SS), a pressure side (DS), a median line (Sk) and a chord length (s) between a blade leading edge and a blade trailing edge. The invention is characterized in that a quotient of the chord length (s) for a maximum height (fSS) of the intake side (SS) is between 0.53 and 0.55, a maximum height (fDS) of the pressure side (DS) is between 0.19 and 0.21, a maximum height (fSk) of the median line (Sk) is between 0.36 and 0.38, a diameter (Dmax / s) of a maximum circle extending between the intake and the pressure side is between 0.34 and 0.36, its distance between centers (xDmax/ s) is between 0.37 and 0.39, its height in the center (fxDmax / s) is between 0.35 and 0.37, a diameter (De / s) of its leading edge circle (3) is between 0.025 and 0.045, a diameter (Da / s) of a trailing edge circle (4) is between 0.01 and 0.02, a radius of curvature of the intake side (SS) at a distance (XRkSS0.1) of 0.1 times the chord length (s) is between 0.39 and 0.41, a radius of curvature of the intake side (SS) at a distance (XRkSS0.75) of 0.75 times the chord length (s) is between 0.83 and 0.85, a radius of curvature of the pressure side (DS) at a distance (XRKD0.15) of 0.15 times the chord length (s) is between 0.74 and 0.76, and/or a radius of curvature of the pressure side (DS) at a distance (XRkDS0.80) of 0.80 times the chord length (s) is between 0.55 and 0.57.
IPC 8 full level
F01D 5/14 (2006.01)
CPC (source: EP)
F01D 5/141 (2013.01)
Citation (search report)
See references of WO 2010000229A2
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)
DE 102008031781 A1 20100107; DE 102008031781 B4 20200610; CN 102084089 A 20110601; CN 102084089 B 20150114; EP 2294285 A2 20110316; JP 2011524490 A 20110901; JP 5478617 B2 20140423; WO 2010000229 A2 20100107; WO 2010000229 A3 20100819
DOCDB simple family (application)
DE 102008031781 A 20080704; CN 200980126997 A 20090624; DE 2009000876 W 20090624; EP 09771999 A 20090624; JP 2011513872 A 20090624