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1. WO2020241133 - ROTOR DISC, ROTOR SHAFT, TURBINE ROTOR, AND GAS TURBINE

Publication Number WO/2020/241133
Publication Date 03.12.2020
International Application No. PCT/JP2020/017500
International Filing Date 23.04.2020
IPC
F01D 5/02 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
5Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
02Blade-carrying members, e.g. rotors
F01D 25/00 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
25Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
F01D 25/12 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
25Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
08Cooling; Heating; Heat insulation
12Cooling
F02C 7/12 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
12Cooling of plants
Applicants
  • 三菱パワー株式会社 MITSUBISHI POWER, LTD. [JP]/[JP]
Inventors
  • 北川 和樹 KITAGAWA Kazuki
  • 橋本 真也 HASHIMOTO Shinya
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
2019-09754924.05.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ROTOR DISC, ROTOR SHAFT, TURBINE ROTOR, AND GAS TURBINE
(FR) DISQUE DE ROTOR, ARBRE DE ROTOR, ROTOR DE TURBINE ET TURBINE À GAZ
(JA) ロータディスク、ロータ軸、タービンロータ、及びガスタービン
Abstract
(EN)
A rotor disc (60) has diametrically outer surfaces (63, 75b), a diametrically inner surface, a plurality of blade root grooves (64) recessed diametrically inward (Dri) from the diametrically outer surfaces (63) and aligned in a circumferential direction (Dc), and a plurality of hole groups (77) formed in each of the plurality of blade root grooves and aligned in the circumferential direction. Each of the plurality of hole groups has a hole including a cooling orifice (78) penetrating from the diametrically inner surface through to the diametrically outer surface (75b). The width (dgc) of each of the plurality of hole groups in the circumferential direction is greater than the width (dga) of each of the plurality of hole groups in an axial direction (Da) and smaller than a minimum gap (dg) among gaps between the plurality of hole groups in the circumferential direction.
(FR)
L'invention concerne un disque de rotor (60) qui comporte des surfaces diamétralement externes (63,75b), une surface diamétralement interne, une pluralité de rainures de racine de pale (64) en retrait diamétralement vers l'intérieur (d) à partir des surfaces diamétralement externes (63) et alignées dans une direction circonférentielle (Dc), et une pluralité de groupes de trous (77) formés dans chacune de la pluralité de rainures de racine de pale et alignés dans la direction circonférentielle. Chaque groupe de trous de la pluralité de groupes de trous comporte un trou comprenant un orifice de refroidissement (78) pénétrant à partir de la surface diamétralement interne par rapport à la surface diamétralement externe (75b). La largeur (dgc) de chacun de la pluralité de groupes de trous dans la direction circonférentielle est supérieure à la largeur (dga) de chacun de la pluralité de groupes de trous dans une direction axiale (Da) et inférieure à un espace minimal (dg) parmi des espaces entre la pluralité de groupes de trous dans la direction circonférentielle.
(JA)
ロータディスク(60)は、径方向外側面(63,75b)と、径方向内側面と、径方向外側面(63)から径方向内側(Dri)に凹み、周方向(Dc)に並んでいる複数の翼根溝(64)と、複数の翼根溝毎に形成され、周方向に並んでいる複数の穴群(77)と、を有する。複数の穴群のそれぞれは、径方向内側面から径方向外側面(75b)に貫通している冷却孔(78)を含む穴を有する。複数の穴群のそれぞれの周方向における幅(dgc)は、複数の穴群のそれぞれの軸線方向(Da)の幅(dga)より大きく、且つ複数の穴群相互間の周方向における間隔のうちで最小間隔(dg)よりも小さい。
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