JPS5857504U

JPS5857504U - turbine impeller

Info

Publication number: JPS5857504U
Application number: JP15223881U
Authority: JP
Inventors: 清福田
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 1981-10-15
Filing date: 1981-10-15
Publication date: 1983-04-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の焼嵌方式によるタービン羽根車の構造を
示す断面図、第２図は第１図の軸方向断面図、第３図は
本考案の一実施例である焼嵌方式によるタービン羽根車
の構造を示す断面図、第４図は第３図に示したホイール
溝部に嵌め込まれたリングの断面構造の拡大図、第５図
は第３図に示したリング取付状態を示す部分断面図であ
る。１・・・・・・ロータ、２・・・・・・ホイール、３・
・・・・・ホイールキー、４ａ、　　４ｂ・・・・・・
キー溝、５・・・・・・ロータハブ部、６ａ、６ｂ・・
・・・・応力集中部、７ａ、　　７ｂ・・・・・・割れ
、＄ａ、　　５ｂ・・・・・・ホイールリング溝、９・
・・・・・リング。Fig. 1 is a sectional view showing the structure of a turbine impeller using a conventional shrink-fitting method, Fig. 2 is an axial sectional view of Fig. 1, and Fig. 3 is a turbine using a shrink-fitting method according to an embodiment of the present invention. 4 is an enlarged view of the sectional structure of the ring fitted into the wheel groove shown in FIG. 3, and FIG. 5 is a partial sectional view showing the ring installed state shown in FIG. 3. It is a diagram. 1...Rotor, 2...Wheel, 3.
...Wheel key, 4a, 4b...
Keyway, 5... Rotor hub part, 6a, 6b...
... Stress concentration part, 7a, 7b ... Crack, $a, 5b ... Wheel ring groove, 9.
·····ring.

Claims

[Scope of utility model registration request]

In a turbine impeller in which a suitable number of wheels each having a plurality of blades arranged in an annular shape are arranged along the axial direction of the rotor, and a key is inserted to integrally connect the wheel and the rotor, the axial end face of the wheel is A turbine impeller characterized in that a cylindrical groove is provided in the wheel, and a ring is fitted so as to be in contact with the circumferential groove of adjacent wheels.