JPS5799210A - Gas turbine rotor - Google Patents
Gas turbine rotorInfo
- Publication number
- JPS5799210A JPS5799210A JP17459980A JP17459980A JPS5799210A JP S5799210 A JPS5799210 A JP S5799210A JP 17459980 A JP17459980 A JP 17459980A JP 17459980 A JP17459980 A JP 17459980A JP S5799210 A JPS5799210 A JP S5799210A
- Authority
- JP
- Japan
- Prior art keywords
- bolts
- bolt
- wheel
- stress
- tight
- 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.)
- Granted
Links
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
PURPOSE: To eliminate a slip among wheels of a gas turbine rotor composed of multiple wheels by alternately arranging binding bolts with the same coefficient of thermal expansion as that of the wheel and with the lower coefficient.
CONSTITUTION: 3 wheels 1 and a shaft 2 are bound tight by 8 bolts 3a and 8 bolts 3b alternately. A286, the same material as the wheel 1, is used for the bolt 3a, and heat resistant steel of Cr-Mo family with the lower coefficient of thermal expansion than A286 is used for the bolt 3b. The bolt 3a is bound as tight as possible within the extent that its binding stress does not exceed the permissible tensile stress σu,which is 0.5 times of its yield strength under a normal temperature and a non-operating condition. The bolt 3b is bound as tight as possible within the extent that its binding stress does not exceed σμ, estimating the shrinkage in the direction of the wheel axle caused by the wheel temperature and the centrifugal force under a normal operating condition. Accordingly, the average binding stress of both bolts never fall below the tensile stress σ1 which does not generate a slip.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17459980A JPS5848726B2 (en) | 1980-12-12 | 1980-12-12 | gas turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17459980A JPS5848726B2 (en) | 1980-12-12 | 1980-12-12 | gas turbine rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5799210A true JPS5799210A (en) | 1982-06-19 |
| JPS5848726B2 JPS5848726B2 (en) | 1983-10-31 |
Family
ID=15981381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17459980A Expired JPS5848726B2 (en) | 1980-12-12 | 1980-12-12 | gas turbine rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5848726B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007132352A (en) * | 2005-11-11 | 2007-05-31 | General Electric Co <Ge> | Rotor assembly for stacking type reactionary steam turbine |
| CN105436454A (en) * | 2015-12-18 | 2016-03-30 | 武昌船舶重工集团有限公司 | Method for calculating tensile stress in cross section of large/medium-sized vertical centrifugal casting type metal sleeve |
-
1980
- 1980-12-12 JP JP17459980A patent/JPS5848726B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007132352A (en) * | 2005-11-11 | 2007-05-31 | General Electric Co <Ge> | Rotor assembly for stacking type reactionary steam turbine |
| US7537430B2 (en) * | 2005-11-11 | 2009-05-26 | General Electric Company | Stacked reaction steam turbine rotor assembly |
| CN105436454A (en) * | 2015-12-18 | 2016-03-30 | 武昌船舶重工集团有限公司 | Method for calculating tensile stress in cross section of large/medium-sized vertical centrifugal casting type metal sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5848726B2 (en) | 1983-10-31 |
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