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1. (WO2018128609) SEAL ASSEMBLY BETWEEN A HOT GAS PATH AND A ROTOR DISC CAVITY
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Pub. No.: WO/2018/128609 International Application No.: PCT/US2017/012262
Publication Date: 12.07.2018 International Filing Date: 05.01.2017
IPC:
F01D 5/08 (2006.01) ,F01D 11/00 (2006.01) ,F01D 11/02 (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
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
08
Heating, heat-insulating, or cooling means
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
11
Preventing or minimising internal leakage of working fluid, e.g. between stages
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
11
Preventing or minimising internal leakage of working fluid, e.g. between stages
02
by non-contact sealings, e.g. of labyrinth type
Applicants:
SIEMENS AKTIENGESELLSCHAFT [DE/DE]; Werner-von-Siemens-Straße 1 80333 München, DE
Inventors:
PRABHU, Bharat Sanjay; US
Agent:
BASU, Rana; US
Priority Data:
Title (EN) SEAL ASSEMBLY BETWEEN A HOT GAS PATH AND A ROTOR DISC CAVITY
(FR) ENSEMBLE JOINT D'ÉTANCHÉITÉ ENTRE UN TRAJET DE GAZ CHAUD ET UNE CAVITÉ DE DISQUE DE ROTOR
Abstract:
(EN) A turbine rotating component (18) includes an airfoil (20) extending radially from a platform (40). An axial end face (44) of the platform (40) faces a seal gap (50) between the rotating component (18) and a stationary component (12). The seal gap (50) is located between a radially outer hot gas path (34) and a radially inner rotor disc cavity (36). Along the end face (44), upstream and downstream positions are defined in relation to a circumferential flow velocity (F) of fluid in the seal gap (50) relative to the end face (44), resultant from rotation of the rotating component (18). The end face (44) includes a groove (60). The groove (60) has a groove floor (62) including an inclined portion (62a) having increasing depth along a downstream direction, and a sidewall (64) downstream of the groove floor (62) and facing the groove floor (62). The sidewall (64) intersects the groove floor (62) extending orthogonal to the end face (44). A radially outer end (68) of the sidewall (64) is located downstream of a radially inner end (66) thereof.
(FR) Un composant rotatif de turbine (18) comprend un profil aérodynamique (20) s'étendant radialement à partir d'une plateforme (40). Une face d'extrémité axiale (44) de la plateforme (40) fait face à un espace d'étanchéité (50) entre le composant rotatif (18) et un composant fixe (12). L'espace d'étanchéité (50) est situé entre un trajet de gaz chaud radialement externe (34) et une cavité de disque de rotor radialement interne (36). Le long de la face d'extrémité (44), des positions amont et aval sont définies par rapport à une vitesse d'écoulement circonférentielle (F) de fluide dans l'espace d'étanchéité (50) par rapport à la face d'extrémité (44), résultant de la rotation du composant rotatif (18). La face d'extrémité (44) comprend une rainure (60). La rainure (60) a un fond de rainure (62) comprenant une partie inclinée (62a) ayant une profondeur croissante le long d'une direction aval, et une paroi latérale (64) en aval du fond de rainure (62) et faisant face au fond de rainure (62). La paroi latérale (64) coupe le fond de rainure (62) s'étendant orthogonalement à la face d'extrémité (44). Une extrémité radialement externe (68) de la paroi latérale (64) est située en aval d'une extrémité radialement interne (66) de celle-ci.
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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: English (EN)