EP 0284829 B1 19911227 - ROTOR BLADING FOR STEAM TURBINES
Title (en)
ROTOR BLADING FOR STEAM TURBINES
Publication
Application
Priority
FR 8703390 A 19870312
Abstract (en)
[origin: US4840539A] Moving blading for a steam turbine, the blading comprising blades (1) having respective bodies (3) provided with caps or fins (4), said caps or fins (4) on adjacent blades coming into contact at least during rotation of the blading over a plane surface which is substantially parallel to the radial axis (Z'Z) of the blade and giving rise to blade body twisting by virtue of said contacts (7, 8), the blading being characterized in that, in addition to the contacts (7 and 8) between adjacent caps or fins (4), it includes a link which is provided by means of additional contacts (A, A') free to slide rectilinearly in a plane corresponding to the plane of each cap or fin (4) along an axis which is substantially perpendicular to the axis of rotation OO' of the blading, said additional contacts (A, A') being situated at a relatively large distance from said contacts (7, 8) which give rise to twisting. The invention improves the vibration properties of the blades.
IPC 1-7
IPC 8 full level
F01D 5/22 (2006.01)
CPC (source: EP KR US)
F01D 5/22 (2013.01 - KR); F01D 5/225 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0284829 A1 19881005; EP 0284829 B1 19911227; AT E70891 T1 19920115; AU 1273088 A 19880915; BR 8801122 A 19881018; CA 1279826 C 19910205; CN 88101214 A 19880921; DE 3867102 D1 19920206; ES 2028154 T3 19920701; FR 2612249 A1 19880916; FR 2612249 B1 19920207; GR 3003829 T3 19930316; JP S63246402 A 19881013; KR 880011440 A 19881028; KR 960004207 B1 19960328; MX 167279 B 19930315; US 4840539 A 19890620; ZA 881716 B 19880906
DOCDB simple family (application)
EP 88103498 A 19880307; AT 88103498 T 19880307; AU 1273088 A 19880304; BR 8801122 A 19880311; CA 561132 A 19880310; CN 88101214 A 19880312; DE 3867102 T 19880307; ES 88103498 T 19880307; FR 8703390 A 19870312; GR 920400251 T 19920218; JP 5815288 A 19880311; KR 880002537 A 19880311; MX 1075588 A 19880311; US 16532088 A 19880308; ZA 881716 A 19880310