JPS62105304U - - Google Patents
Info
- Publication number
- JPS62105304U JPS62105304U JP19744585U JP19744585U JPS62105304U JP S62105304 U JPS62105304 U JP S62105304U JP 19744585 U JP19744585 U JP 19744585U JP 19744585 U JP19744585 U JP 19744585U JP S62105304 U JPS62105304 U JP S62105304U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- groove
- turbine impeller
- notch
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Description
第１図は本考案の一実施例にかかるタービン羽
根車の一部を示す断面図、第２図は第１図の部分
拡大図、第３図は切欠と溝の深さの比（ｌ／ｌ０
）と段部に作用する応力の関係を示す線図、第４
図は従来のタービン羽根車の一部を示す断面図、
第５図および第６図は材料ごとの温度と熱膨張係
数の関係を示す線図である。
１…タービン羽根車、２…デイスク、３…溝、
４…羽根、５…植込部、６…段部、７…係合面、
８，９，１０…切欠、１１，１２，１３…緩衝部
。
FIG. 1 is a sectional view showing a part of a turbine impeller according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. l 0
) and the stress acting on the stepped portion, diagram 4th
The figure is a cross-sectional view of a part of a conventional turbine impeller.
FIGS. 5 and 6 are diagrams showing the relationship between temperature and coefficient of thermal expansion for each material. 1...Turbine impeller, 2...Disc, 3...Groove,
4... Vane, 5... Implanted part, 6... Stepped part, 7... Engagement surface,
8, 9, 10... Notch, 11, 12, 13... Buffer section.
Claims (1)
に羽根植込部に形成された段部を係合することに
より、多数の羽根をデイスク先端に円周状に配列
してなるタービン羽根車において、前記デイスク
の先端部には前記溝と前記段部の係合面に平行な
方向に切欠を形成したことを特徴とするタービン
羽根車。 (2) 切欠の深さをｌ、溝の深さをｌ０とすると
き、 ０＜ｌ／ｌ０≦１ であることを特徴とする実用新案登録請求の範囲
第１項記載のタービン羽根車。[Claims for Utility Model Registration] (1) A large number of blades can be attached to the tip of a disk by engaging a stepped portion formed in the blade embedded part with a groove provided around the tip of the disc-shaped disk. 1. A turbine impeller arranged in a circumferential manner, characterized in that a notch is formed in a distal end portion of the disk in a direction parallel to an engaging surface of the groove and the step portion. (2) The turbine impeller according to claim 1 of the utility model registration, characterized in that 0<l/l 0 ≦ 1 , where the depth of the notch is l and the depth of the groove is l 0 . .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19744585U JPS62105304U (en) | 1985-12-24 | 1985-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19744585U JPS62105304U (en) | 1985-12-24 | 1985-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62105304U true JPS62105304U (en) | 1987-07-04 |
Family
ID=31157188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19744585U Pending JPS62105304U (en) | 1985-12-24 | 1985-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62105304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000154702A (en) * | 1998-09-28 | 2000-06-06 | General Electric Co <Ge> | Stress relaxation dovetail |
| JP2010249073A (en) * | 2009-04-17 | 2010-11-04 | Hitachi Ltd | Turbine rotor, turbine rotor blade coupling structure, steam turbine and power generation equipment |
-
1985
- 1985-12-24 JP JP19744585U patent/JPS62105304U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000154702A (en) * | 1998-09-28 | 2000-06-06 | General Electric Co <Ge> | Stress relaxation dovetail |
| JP2010249073A (en) * | 2009-04-17 | 2010-11-04 | Hitachi Ltd | Turbine rotor, turbine rotor blade coupling structure, steam turbine and power generation equipment |
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