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1. (WO2017168335) METHOD FOR THE CONSTRUCTION OF BLADED DISCS FOR RADIAL TURBOMACHINES AND A BLADED DISC OBTAINED BY MEANS OF THIS METHOD
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Pub. No.: WO/2017/168335 International Application No.: PCT/IB2017/051784
Publication Date: 05.10.2017 International Filing Date: 29.03.2017
IPC:
F01D 1/06 (2006.01) ,F01D 5/04 (2006.01) ,F01D 5/30 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
1
Non-positive-displacement machines or engines, e.g. steam turbines
02
with stationary working-fluid guiding means and bladed or like rotor
06
traversed by the working-fluid substantially radially
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
02
Blade-carrying members, e.g. rotors
04
for radial-flow machines or engines
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
30
Fixing blades to rotors; Blade roots
Applicants: EXERGY S.P.A.[IT/IT]; Via Degli Agresti 6 40123 Bologna, IT
Inventors: SPADACINI, Mr. Claudio; IT
RIZZI, Mr. Dario; IT
Agent: BRASCA, Marco; IT
Priority Data:
10201600003270430.03.2016IT
Title (EN) METHOD FOR THE CONSTRUCTION OF BLADED DISCS FOR RADIAL TURBOMACHINES AND A BLADED DISC OBTAINED BY MEANS OF THIS METHOD
(FR) PROCÉDÉ DESTINÉ À LA CONSTRUCTION DE DISQUES À PALES DESTINÉS À DES MACHINES À TURBINES RADIALES ET DISQUE À PALES OBTENU À L'AIDE DE CE PROCÉDÉ
Abstract:
(EN) The present invention concerns a method for the construction of bladed discs for radial turbomachines, comprising: preparing a disc (6, 14) provided with a front face (7); preparing a plurality of reinforcement rings (23) with different diameters. Preparing the disc (6, 14) comprises: realizing annular sets of blades (20) in one piece with the disc (6, 14), said sets (20) being concentric and coaxial with a central axis (X-X) and arranged on the front face (7), wherein each blade (20) has a leading edge (21 ) and a trailing edge (22) substantially parallel to the central axis (X-X); and/or preparing a plurality of reinforcement rings (23) comprises: realizing in one piece with each one of the reinforcement rings (23) an annular set of auxiliary blades (20') arranged around a central axis (X-X), wherein each auxiliary blade (20') has a leading edge (21 ') and a trailing edge (22') substantially parallel to the central axis (X-X). Each one of the reinforcement rings (23) is applied to the disc (6, 14) at one of the annular sets of blades (20) and/or auxiliary blades (20'), so as to define on the front face (7) annular sets of blades (20) and/or auxiliary blades (20'), each one provided with a respective reinforcement ring (23).
(FR) La présente invention concerne un procédé destiné à la construction de disques à pales destinés à des machines à turbines radiales, lequel procédé comprend : la préparation d'un disque (6, 14) comportant une face avant (7) ; et la préparation d'une pluralité de bagues de renfort (23) aux diamètres différents. La préparation du disque (6, 14) comprend : la réalisation d'ensembles annulaires de pales (20) d'un seul tenant avec le disque (6, 14), lesdits ensembles (20) étant concentriques et coaxiaux à un axe central (X-X) et disposés sur la face avant (7), chaque pale (20) présentant un bord d'attaque (21) et un bord de fuite (22) sensiblement parallèles à l'axe central (X-X) ; et/ou la préparation d'une pluralité de bagues de renfort (23), comprenant : la réalisation d'un seul tenant avec chacune des bagues de renfort (23) d'un ensemble annulaire de pales auxiliaires (20') disposées autour d'un axe central (X-X), chaque pale auxiliaire (20') présentant un bord d'attaque (21') et un bord de fuite (22') sensiblement parallèles à l'axe central (X-X). Chacune des bagues de renfort (23) est appliquée au disque (6, 14) au niveau de l'un des ensembles annulaires de pales (20) et/ou de pales auxiliaires (20'), de façon à définir sur la face avant (7) des ensembles annulaires de pales (20) et/ou de pales auxiliaires (20'), comportant chacun une bague de renfort respective (23).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Italian (IT)