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1. (WO2017033227) STEAM TURBINE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/033227 International Application No.: PCT/JP2015/073513
Publication Date: 02.03.2017 International Filing Date: 21.08.2015
IPC:
F01D 11/04 (2006.01) ,F01D 11/10 (2006.01) ,F01D 25/00 (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
11
Preventing or minimising internal leakage of working fluid, e.g. between stages
02
by non-contact sealings, e.g. of labyrinth type
04
using sealing fluid, e.g. steam
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
08
for sealing space between rotor blade tips and stator
10
using sealing fluid, e.g. steam
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
25
Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
Applicants:
三菱重工コンプレッサ株式会社 MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION [JP/JP]; 東京都港区芝五丁目34番6号 34-6, Shiba 5-chome, Minato-ku, Tokyo 1080014, JP
Inventors:
香田 拓郎 KODA Takuro; JP
Agent:
森 隆一郎 MORI Ryuichirou; JP
Priority Data:
Title (EN) STEAM TURBINE
(FR) TURBINE À VAPEUR
(JA) 蒸気タービン
Abstract:
(EN) The steam turbine (1) is equipped with: a rotor shaft (21) which has disk parts (23) fixed to a shaft core part (22) rotating about an axis (Ar); multiple rotor blade cascades (31) which are fixed to the outer peripheries of the disk parts (23); and stator blade cascades (41) which are adjacent to the upstream side of the rotor blade cascades (31). A gap flow passage (100A), which extends toward the radial inner side from a steam main flow passage (15), is formed in a gap between constituent rotor blade cascade (31) and stator blade cascade (41) of a speed governing stage (50a). Communication passages (102), which communicate with the gap flow passage (100A) at one end while communicating at the other end with a space containing steam having a higher pressure than the steam pressure in the gap flow passage (100A), are formed in the disk part (23).
(FR) La turbine à vapeur (1) de l'invention est équipée : d'un axe de rotor (21) qui possède une partie disque (23) fixée sur une partie noyau axial (22) en rotation avec une ligne axiale (Ar) pour centre; d'une pluralité de rangées d'ailettes mobiles (31) fixée sur la périphérie externe de la partie disque (23); et d'une rangée d'ailettes fixe (41) adjacente côté amont de la rangées d'ailettes mobiles (31). Un trajet d'écoulement en interstice (100A) se prolongeant d'un trajet d'écoulement principal de vapeur (105) à un côté interne de direction radiale, est formé dans des interstices entre la rangée d'ailettes fixe (41) et les rangées d'ailettes mobiles (31) configurant un épaulement de régulation de vitesse (50a). Un trajet de communication (102) dont une extrémité communique avec le trajet d'écoulement en interstice (100A), et l'autre extrémité communique avec un espace dans lequel se trouve une vapeur de pression supérieure à celle de la vapeur se trouvant dans le trajet d'écoulement en interstice (100A), est formé dans la partie disque (23).
(JA) 蒸気タービン(1)は、軸線(Ar)を中心として回転する軸芯部(22)に固定されたディスク部(23)とを有するロータ軸(21)と、ディスク部(23)の外周に固定された複数の動翼列(31)と、動翼列(31)の上流側に隣接している静翼列(41)と、を備えている。調速段(50a)を構成する動翼列(31)及び静翼列(41)の隙間に、蒸気主流路(15)から径方向内側に延びる隙間流路(100A)が形成されている。一端が隙間流路(100A)に連通し、他端が隙間流路(100A)内の蒸気の圧力よりも高い圧力の蒸気が存在する空間に連通する連通路(102)がディスク部(23)に形成されている。
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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, 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, KN, KP, KR, 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: Japanese (JA)
Filing Language: Japanese (JA)