JPS5632005A - Steam turbine nozzle diaphragm - Google Patents
Steam turbine nozzle diaphragmInfo
- Publication number
- JPS5632005A JPS5632005A JP10723779A JP10723779A JPS5632005A JP S5632005 A JPS5632005 A JP S5632005A JP 10723779 A JP10723779 A JP 10723779A JP 10723779 A JP10723779 A JP 10723779A JP S5632005 A JPS5632005 A JP S5632005A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- casting
- sandmold
- turbine
- cast
- 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
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
PURPOSE: To improve the dimensional accuracy of an area of steam passageway and a performance of a turbine, further, to reduce a cost therefor by a method wherein a stator blade, consisting of a nozzle plate and a partition plate integral therewith, and inner and outer rings of a diaphragm are cast together and are secured to each other.
CONSTITUTION: A stator blade 31 is made by a precision casting to cast a nozzle plate and a partition plate integrally. The stator blades 31 are arranged in a casting sandmold and a molten cast iron or a molten cast steel is poured into cavities in the sandmold which are formed into configurations of a diaphragm inner ring 32 and a diaphragm outer ring 33 to constitute a nozzle by securing the stator blades 31 to the rings by internal-chill casting. Thus, there is no portion to be welded, therefore, a shrinkage due to the welding will never be caused and a dimensional accuracy of an area for a steam passageway is improved which, in turn, can improve a performance of a turbine. Also, connection with different materials may be facilitated and man- hours therefor may be reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10723779A JPS5632005A (en) | 1979-08-24 | 1979-08-24 | Steam turbine nozzle diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10723779A JPS5632005A (en) | 1979-08-24 | 1979-08-24 | Steam turbine nozzle diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5632005A true JPS5632005A (en) | 1981-04-01 |
Family
ID=14453952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10723779A Pending JPS5632005A (en) | 1979-08-24 | 1979-08-24 | Steam turbine nozzle diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5632005A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116805A (en) * | 1983-11-29 | 1985-06-24 | Mitsubishi Heavy Ind Ltd | Manufacture of partition plate by casting |
| US5246339A (en) * | 1988-06-08 | 1993-09-21 | Abb Flakt Ab | Guide vane for an axial fan |
| US11333029B2 (en) * | 2013-10-23 | 2022-05-17 | Nuovo Pignone Srl | Method for manufacturing a stage of a steam turbine |
-
1979
- 1979-08-24 JP JP10723779A patent/JPS5632005A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116805A (en) * | 1983-11-29 | 1985-06-24 | Mitsubishi Heavy Ind Ltd | Manufacture of partition plate by casting |
| US5246339A (en) * | 1988-06-08 | 1993-09-21 | Abb Flakt Ab | Guide vane for an axial fan |
| US11333029B2 (en) * | 2013-10-23 | 2022-05-17 | Nuovo Pignone Srl | Method for manufacturing a stage of a steam turbine |
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