JPS5656975A - Spiral casing for water turbine - Google Patents
Spiral casing for water turbineInfo
- Publication number
- JPS5656975A JPS5656975A JP13322679A JP13322679A JPS5656975A JP S5656975 A JPS5656975 A JP S5656975A JP 13322679 A JP13322679 A JP 13322679A JP 13322679 A JP13322679 A JP 13322679A JP S5656975 A JPS5656975 A JP S5656975A
- Authority
- JP
- Japan
- Prior art keywords
- flow
- spiral
- preliminary
- whirl
- path
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/10—Geometry two-dimensional
- F05B2250/15—Geometry two-dimensional spiral
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/20—Geometry three-dimensional
- F05B2250/25—Geometry three-dimensional helical
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
PURPOSE: To improve a water turbine efficiency, by a method wherein a flow-in path is bent in the same direction as that of a casing spiral.
CONSTITUTION: A preliminary whirl flow path 6 having a spiral angle ϕO is positioned at an upstream side outside a point A where an outer shell 1a of a casing spiral terminal section crosses a stay vane 3 row. A centrifugal force excercises on a flow from the upper stream at the preliminary whirl flow path 6 and said flow changes from an uniform flow 9 to a free spiral type speed distribution 10 on a flow cross section surface, whereby a well-rectified flow is obtained at a stay vane inlet and over the whole circumference. That is, after the free spiral flow speed distribution is realized at the preliminary whirl flow path 6, the flow reaches a point A and afterwards, whereby the influence by a secondary flow can be uniformalized in the circumferential direction and accordingly, a peak proper of the secondary flow is not produced. After flow-in water passes through the stay vanes 3, it enters into runner blades 5a through guide vanes to rotate runners 5.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13322679A JPS5656975A (en) | 1979-10-16 | 1979-10-16 | Spiral casing for water turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13322679A JPS5656975A (en) | 1979-10-16 | 1979-10-16 | Spiral casing for water turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5656975A true JPS5656975A (en) | 1981-05-19 |
JPS6154954B2 JPS6154954B2 (en) | 1986-11-25 |
Family
ID=15099675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13322679A Granted JPS5656975A (en) | 1979-10-16 | 1979-10-16 | Spiral casing for water turbine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5656975A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101194712B1 (en) | 2010-04-30 | 2012-10-25 | 남동명 | Generator system using rotating of turbulence |
-
1979
- 1979-10-16 JP JP13322679A patent/JPS5656975A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101194712B1 (en) | 2010-04-30 | 2012-10-25 | 남동명 | Generator system using rotating of turbulence |
Also Published As
Publication number | Publication date |
---|---|
JPS6154954B2 (en) | 1986-11-25 |
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