JPH01144401U

JPH01144401U -

Info

Publication number: JPH01144401U
Application number: JP4269188U
Authority: JP
Priority date: 1988-03-29
Filing date: 1988-03-29
Publication date: 1989-10-04
Anticipated expiration: 2003-03-29
Also published as: JPH0723524Y2

Description

[Brief explanation of the drawing]

第１図はこの考案に係る軸流タービンを用いた
ガスタービンを示す縦断面図、第２図は第１図の
タービン翼の保持構造を示す拡大断面図、第３図
は第２図の―線から見た一部破断正面図、第
４図は従来のタービン翼の保持構造を示す縦断面
図、第５図は第４図の―線から見た一部破断
正面図である。１０……タービン翼、１０ａ……ブレード、１
２……係合突起、１３……間隙、２０……タービ
ンデイスク、２１……係合凹所、３０……シール
プレート、３０ａ……シールプレートの内周部、
４０……固定プレート、４０ａ……固定プレート
の内周部、４０ｂ……固定プレートの外周部、７
０……冷媒用通路、７０ａ……一端部、７０ｂ…
…他端部、Ｂ……軸方向。 FIG. 1 is a longitudinal sectional view showing a gas turbine using an axial flow turbine according to this invention, FIG. 2 is an enlarged sectional view showing the turbine blade holding structure of FIG. 1, and FIG. FIG. 4 is a longitudinal sectional view showing a conventional turbine blade holding structure, and FIG. 5 is a partially cutaway front view taken from the line - in FIG. 4. 10... Turbine blade, 10a... Blade, 1
2... Engagement protrusion, 13... Gap, 20... Turbine disk, 21... Engagement recess, 30... Seal plate, 30a... Inner peripheral part of seal plate,
40... Fixed plate, 40a... Inner peripheral part of fixed plate, 40b... Outer peripheral part of fixed plate, 7
0... Refrigerant passage, 70a... One end, 70b...
...Other end, B...Axis direction.

Claims

[Claims for Utility Model Registration] (1) A turbine blade having a blade made of ceramic; a turbine disk having a plurality of engaging recesses provided on its outer periphery for engaging engaging protrusions of the turbine blade; It is arranged on both sides of the turbine disk over the entire circumference in the circumferential direction, and is divided into a plurality of parts in the circumferential direction, so that the gap between the engagement protrusions of the turbine blade and each of the engagement recesses are connected to the axis of the turbine disk. A plurality of seal plates made of ceramic are closed from both sides in the direction, and the inner circumferential portion is located on the inner circumferential side of the seal plates and is fixed to the turbine disk, and the outer circumferential portion is engaged with the inner circumferential portion of the seal plates. and a fixed plate made of a metal material that holds the seal plate in a predetermined position. (2) In the axial flow turbine according to claim (1), the inside of the turbine disk extends radially,
An axial flow turbine in which a refrigerant passage is formed that guides refrigerant supplied to one end on the radially inner side into the engagement recess from the other end on the radially outer side.