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1. WO2021020518 - AXIAL FLOW TURBINE

Publication Number WO/2021/020518
Publication Date 04.02.2021
International Application No. PCT/JP2020/029279
International Filing Date 30.07.2020
IPC
F01D 11/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working fluid, e.g. between stages
02by non-contact sealings, e.g. of labyrinth type
F01D 5/20 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12Blades
14Form or construction
20Specially-shaped blade tips to seal space between tips and stator
F01D 9/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
9Stators
02Nozzles; Nozzle boxes; Stator blades; Guide conduits
04forming ring or sector
F02C 7/28 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C1/-F02C6/158; Air intakes for jet-propulsion plants
28Arrangement of seals
CPC
F01D 11/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
11Preventing or minimising internal leakage of working-fluid, e.g. between stages
02by non-contact sealings, e.g. of labyrinth type
F01D 5/20
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5Blades; Blade-carrying members
12Blades
14Form or construction
20Specially-shaped blade tips to seal space between tips and stator
F01D 9/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
9Stators
02Nozzles; Nozzle boxes; Stator blades; Guide conduits ; , e.g. individual nozzles
04forming ring or sector
F02C 7/28
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
28Arrangement of seals
Applicants
  • 三菱パワー株式会社 MITSUBISHI POWER, LTD. [JP]/[JP]
Inventors
  • 段 冲非 DUAN Chongfei
  • 椙下 秀昭 SUGISHITA Hideaki
  • 松本 和幸 MATSUMOTO Kazuyuki
  • 小野 英樹 ONO Hideki
  • 桑村 祥弘 KUWAMURA Yoshihiro
  • 瀬川 清 SEGAWA Kiyoshi
  • 福島 久剛 FUKUSHIMA Hisataka
Agents
  • 松沼 泰史 MATSUNUMA Yasushi
  • 伊藤 英輔 ITO Eisuke
  • 橋本 宏之 HASHIMOTO Hiroyuki
  • 古都 智 FURUICHI Satoshi
  • 鎌田 康一郎 KAMATA Koichiro
Priority Data
2019-14148931.07.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) AXIAL FLOW TURBINE
(FR) TURBINE À FLUX AXIAL
(JA) 軸流タービン
Abstract
(EN)
This steam turbine is provided with: a rotary shaft; a plurality of movable blades each of which has a movable blade body (42) and a shroud (43), and which are circumferentially arranged at intervals; a casing (5) that has a recessed section (8) for accommodating the shroud (43); fins (7) that form clearances (C) from the outer circumferential surface (43A) of the shroud (43); a stator blade support part (90) disposed on the downstream side of the recessed section (8); a plurality of stator blades circumferentially arranged at intervals; and an annular partition plate (70) that extends from a recessed section downstream surface (8D) toward the upstream side thereof, wherein the casing has formed therein a bypass flow passage (P) that communicates a region radially outside of the partition plate (70) and a region between the stator blades.
(FR)
Turbine à vapeur qui est pourvue : d'un arbre rotatif ; d'une pluralité d'aubes mobiles dont chacune comporte un corps d'aube mobile (42) et une enveloppe (43), et qui sont disposées de manière circonférentielle à des intervalles ; un carter (5) qui comporte une section évidée (8) destinée à recevoir l'enveloppe (43) ; des ailettes (7) qui forment des jeux (C) à partir de la surface circonférentielle externe (43A) de l'enveloppe (43) ; une partie de support d'aube de stator (90) disposée sur le côté aval de la section évidée (8) ; une pluralité d'aubes de stator disposées de manière circonférentielle à des intervalles ; et une plaque de séparation annulaire (70) qui s'étend à partir d'une surface aval de section évidée (8D) vers le côté amont de celle-ci. Le carter comporte en son sein un passage d'écoulement de dérivation (P) qui fait communiquer une région radialement à l'extérieur de la plaque de séparation (70) et une région entre les aubes de stator.
(JA)
この蒸気タービンは、回転軸と、動翼本体(42)、及びシュラウド(43)を有するとともに、周方向に間隔をあけて配列された複数の動翼と、シュラウド(43)を収容する凹部(8)が形成されているケーシング(5)と、シュラウド(43)の外周面(43A)との間にクリアランス(C)を形成するフィン(7)と、凹部(8)の下流側に配置された静翼支持部(90)と、周方向に間隔をあけて配列された複数の静翼と、凹部下流面(8D)から上流側に向かって延びる環状の仕切板(70)と、を備え、ケーシングには、仕切板(70)よりも径方向外側の領域と、静翼同士の間の領域を連通するバイパス流路(P)が形成されている。
Also published as
Latest bibliographic data on file with the International Bureau