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1. JP2020106015 - BLADE OF ROTOR AND DISC

Office Japan
Application Number 2018248016
Application Date 28.12.2018
Publication Number 2020106015
Publication Date 09.07.2020
Publication Kind A
IPC
F01D 5/30
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
30Fixing blades to rotors; Blade roots
F01D 5/06
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
06Rotors for more than one axial stage, e.g. of drum or multiple-disc type; Details thereof, e.g. shafts, shaft connections
F04D 29/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
26Rotors specially adapted for elastic fluids
32for axial-flow pumps
34Blade mountings
CPC
F01D 5/06
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
02Blade-carrying members, e.g. rotors
06Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
F01D 5/30
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
30Fixing blades to rotors; Blade roots ; ; Blade spacers
F04D 29/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
26Rotors specially for elastic fluids
32for axial flow pumps
34Blade mountings
F01D 5/3007
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
30Fixing blades to rotors; Blade roots ; ; Blade spacers
3007of axial insertion type
Applicants KAWASAKI HEAVY IND LTD
川崎重工業株式会社
Inventors KURASHIMA HIROTAKA
倉嶋 寛貴
MATSUDA HIROKAZU
松田 博和
TAMAI YOSHITSUGU
玉井 亮嗣
TANAKA RYOZO
田中 良造
Agents 杉本 修司
野田 雅士
堤 健郎
中田 健一
金子 大輔
Title
(EN) BLADE OF ROTOR AND DISC
(JA) 回転体の動翼およびディスク
Abstract
(EN)

PROBLEM TO BE SOLVED: To reduce local concentration of stress at a blade root of a blade of a rotor and a blade groove of a disc.

SOLUTION: In a blade (15) buried in a disc (17) of a rotor (1), a blade root (21) has at least one stage of a projection portion (23) projecting to both sides in a direction including a peripheral direction component to lock the blade root (21) on the disc (17) in a cross-sectional shape, a contact surface in contact with the disc (17), of the projection portion (23) is inclined so that it is extended from a radial inner side to a radial outer side toward a central portion of the blade root (21), and a non-contact surface not in contact with the disc (17), of the projection portion (23) is inclined so that it is extended from the radial inner side to the radial outer side toward the central portion of the blade root (21).

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2020,JPO&INPIT

(JA)

【課題】回転体の動翼の翼根およびディスクの翼溝における局所的な応力集中を緩和するする。
【解決手段】回転体(1)のディスク(17)に植設される動翼(15)において、その翼根(21)が、横断面形状において、当該翼根(21)をディスク(17)に係止するための、周方向成分を含む方向の両側に突出する突出部(23)を少なくとも1段有し、前記突出部(23)の、ディスク(17)に接触する接触面が、当該翼根(21)の中央部に向かうに従って径方向内側から径方向外側に延びるように傾斜しており、前記突出部(23)の、ディスク(17)に接触しない非接触面が、当該翼根(21)の中央部に向かうに従って径方向内側から径方向外側に延びるように傾斜している。
【選択図】図3

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