JPS5799213A - Production of group of vanes for rotary machine - Google Patents
Production of group of vanes for rotary machineInfo
- Publication number
- JPS5799213A JPS5799213A JP12413381A JP12413381A JPS5799213A JP S5799213 A JPS5799213 A JP S5799213A JP 12413381 A JP12413381 A JP 12413381A JP 12413381 A JP12413381 A JP 12413381A JP S5799213 A JPS5799213 A JP S5799213A
- Authority
- JP
- Japan
- Prior art keywords
- vanes
- group
- resonance
- vane
- shroud
- 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 effectively avoid resonance of vane groups of steam turbine etc. by selecting the position of cutting the connecting member after coupling and assembling the group of vanes with the shroud at the vane top and midle-part-connecting member.
CONSTITUTION: Vanes 2 planted on a shaft are connected at their top by means of shroud 4 and are also connected at the middle by a circular fastening member 3' like stab or wire etc. The fastening member 3' which is for enhancing the rigidity of the vanes and adjusting intrinsic frequency of vane groups, is cut into 2 pieces at the place which is selected as suitable for avoiding resonance based on measured data, after assembling. The resonance can be avoided because the intrinsic frequency of fundamantal vibration type decreases by 20W30cps. The place to be cut is calculated by using the measuring data, but should be within the range which is allowable from the point of view of the rigidity.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12413381A JPS5799213A (en) | 1981-08-10 | 1981-08-10 | Production of group of vanes for rotary machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12413381A JPS5799213A (en) | 1981-08-10 | 1981-08-10 | Production of group of vanes for rotary machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5799213A true JPS5799213A (en) | 1982-06-19 |
Family
ID=14877733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12413381A Pending JPS5799213A (en) | 1981-08-10 | 1981-08-10 | Production of group of vanes for rotary machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5799213A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62237005A (en) * | 1986-04-09 | 1987-10-17 | Hitachi Ltd | Connection of turbine moving blade |
US5498136A (en) * | 1993-09-17 | 1996-03-12 | Hitachi, Ltd. | Fluid machinery having blade apparatus and blade apparatus for fluid machinery |
US20110274549A1 (en) * | 2010-05-06 | 2011-11-10 | General Electric Company | Blade having asymmetrical mid-span structure portions and related bladed wheel structure |
-
1981
- 1981-08-10 JP JP12413381A patent/JPS5799213A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62237005A (en) * | 1986-04-09 | 1987-10-17 | Hitachi Ltd | Connection of turbine moving blade |
US5498136A (en) * | 1993-09-17 | 1996-03-12 | Hitachi, Ltd. | Fluid machinery having blade apparatus and blade apparatus for fluid machinery |
US20110274549A1 (en) * | 2010-05-06 | 2011-11-10 | General Electric Company | Blade having asymmetrical mid-span structure portions and related bladed wheel structure |
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