JPS5656906A - Cascade of stator blades for use in axial-flow turbine - Google Patents
Cascade of stator blades for use in axial-flow turbineInfo
- Publication number
- JPS5656906A JPS5656906A JP13239879A JP13239879A JPS5656906A JP S5656906 A JPS5656906 A JP S5656906A JP 13239879 A JP13239879 A JP 13239879A JP 13239879 A JP13239879 A JP 13239879A JP S5656906 A JPS5656906 A JP S5656906A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- stator
- pressure
- tip
- flow
- 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 minimize the secondary-flow loss near the tips of stator blades, by increasing th thickness and the chord length of the stator blades from the portion of the blade length where the secondary-flow loss is caused to the tip of the blade gradually toward the upstream side of the main flow from the root portion toward the tip portion of the stator blades. CONSTITUTION:A stator blade 16 located on the upstream side of a rotor blade 23 in respect of main flow 15 is shaped such that its chord length is increased DELTAC gradually from the root portion 17 fixed to a lower diaphragm 21 toward the tip portion 18 fixed to an upper diaphragm 22 and its thickness is increased gradually toward the upstream side of main flow 15. Resultantly, as for the pressure on the upper side of the stator blade, pressure at point F on the root side of the blade is always higher than that at point E on the tip side of the blade. As for the pressure on the lower side of the stator blade, however, there is no substantial difference in the pressure at poient E and that at point F. Therefore, the pressure difference on the upper side of the stator blade functions to prevent the secondary flow caused at the tip portion of the blade from flowing toward the root portion, so that the secondary-flow loss at the tip portion of the blade can be minimized effectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13239879A JPS5656906A (en) | 1979-10-16 | 1979-10-16 | Cascade of stator blades for use in axial-flow turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13239879A JPS5656906A (en) | 1979-10-16 | 1979-10-16 | Cascade of stator blades for use in axial-flow turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5656906A true JPS5656906A (en) | 1981-05-19 |
| JPS6158642B2 JPS6158642B2 (en) | 1986-12-12 |
Family
ID=15080451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13239879A Granted JPS5656906A (en) | 1979-10-16 | 1979-10-16 | Cascade of stator blades for use in axial-flow turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5656906A (en) |
-
1979
- 1979-10-16 JP JP13239879A patent/JPS5656906A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6158642B2 (en) | 1986-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Effective date: 20050308 Free format text: JAPANESE INTERMEDIATE CODE: A621 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20081021 |
|
| A601 | Written request for extension of time |
Effective date: 20090120 Free format text: JAPANESE INTERMEDIATE CODE: A601 |
|
| A602 | Written permission of extension of time |
Effective date: 20090302 Free format text: JAPANESE INTERMEDIATE CODE: A602 |
|
| A313 | Final decision of rejection without a dissenting response from the applicant |
Effective date: 20090511 Free format text: JAPANESE INTERMEDIATE CODE: A313 |
|
| A02 | Decision of refusal |
Effective date: 20090616 Free format text: JAPANESE INTERMEDIATE CODE: A02 |