JPS6245302U

JPS6245302U -

Info

Publication number: JPS6245302U
Application number: JP13667385U
Authority: JP
Priority date: 1985-09-06
Filing date: 1985-09-06
Publication date: 1987-03-19

Description

[Brief explanation of drawings]

第１図から第３図は本考案に係わる一実施例を
示す図で、第１図は本考案に係わる実施例のター
ビンロータの要部を示す一部破断の側面図、第２
図は、第１図の―線に沿うシユラウドとブレ
ードとを示す側断面図、第３図は、蒸気タービン
に本考案を適用した例を示す要部断面図、第４図
から第６図は従来例を示す図である。第４図は蒸
気タービンに存来のブレードを装着したブレード
の状況を表わす正面図、第５図は第４図の部分拡
大図、第６図は、第５図の―線に沿つたブレ
ード及びシユラウドを示す断面図である。１……シヤフト、２……デイスク、３……ブレ
ードのルート部、４……ブレードのプロフアイル
部、５……テノン部、６……シユラウド、７……
ラジアルフイン、８……ノズル、９……仕切板、
９ａ……仕切板の円筒部、１０……ケーシング、
Ａ……ロータ、Ｂ……アキシヤルラビリンス、１
６……シユラウド、１６ａ……シユラウドの穴、
１６ｂ……シユラウドの凹状の溝。 1 to 3 are diagrams showing an embodiment of the present invention, in which FIG. 1 is a partially cutaway side view showing the main parts of the turbine rotor of the embodiment of the present invention, and FIG.
The figure is a side sectional view showing the shroud and blades taken along the line - in Fig. 1, Fig. 3 is a sectional view of main parts showing an example in which the present invention is applied to a steam turbine, and Figs. 4 to 6 are It is a figure showing a conventional example. Fig. 4 is a front view showing the state of the blades installed in a steam turbine with existing blades, Fig. 5 is a partially enlarged view of Fig. 4, and Fig. 6 is a view of the blades and blades along the - line in Fig. 5. It is a sectional view showing a shroud. 1... Shaft, 2... Disc, 3... Root part of the blade, 4... Profile part of the blade, 5... Tenon part, 6... Shroud, 7...
Radial fin, 8... Nozzle, 9... Partition plate,
9a...Cylindrical part of partition plate, 10...Casing,
A...Rotor, B...Axial labyrinth, 1
6... Shroud, 16a... Hole in Shroud,
16b... Concave groove in the shroud.

Claims

[Scope of utility model registration request]

A turbine shroud characterized in that concave grooves are formed along the circumferential direction on both sides of the shroud that connects turbine blades.