SE308491B - - Google Patents
Info
- Publication number
- SE308491B SE308491B SE5428/63A SE542863A SE308491B SE 308491 B SE308491 B SE 308491B SE 5428/63 A SE5428/63 A SE 5428/63A SE 542863 A SE542863 A SE 542863A SE 308491 B SE308491 B SE 308491B
- Authority
- SE
- Sweden
- Prior art keywords
- cusp
- vanes
- thickness
- wall
- spiral
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/186—Spiral or volute casings
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
995,178. Hydraulic turbines. J. M. VOITH G.m.b.H. May 21, 1963 [May 22, 1962], No. 20128/63. Heading F1T. An admission system for hydraulic reaction turbine such as Kaplan and Francis turbines comprises an annulus of guide vanes, an intake duct merging into a spiral casing and a cusp formed by the inner wall of the intake duct and the end of the outer wall of the spiral casing, characterized in that the cusp forms a wall with its concavity facing the turbine axis and of thickness not exceeding three times the thickness at its outlet end, the length of the cusp being between 30 to 80 times the thickness at its outlet end, disregarding any final taper forming the extreme terminal edge. A Kaplan or Francis turbine intake duct 1, Fig. 1, merges into a spiral casing 2 to form a cusp 10 between the outside wall 6 of the casing 2 and the inner wall 5 of duct 1. The thickness of the cusp 10 does not exceed three times the thickness at its outlet 11, disregarding the taper 11 a, and its length is between 30 and 80 times, preferably 50 times, this outlet thickness. The form of the spiral 2 is such that the mean peripheral velocity of flow increases between radial planes a and c, decreases between c and e, and increases between e and a. The camber and chordwise length of the guide vanes 18 to 28 decrease in the direction of flow and vanes 18, 19 may have a chordwise length between 2 and 3 times that of the following vanes. The distance between consecutive vanes 18 to 28 may increase from the cusp 10 onwards and the distance between cusp 10 and vane 18 or between vanes 18 and 19 may be half that between any two other consecutive vanes. In further embodiments the outside wall 30 of the spiral is elliptical, Fig. 3 (not shown) or circular, Fig. 4, and the halves 31a, 31b of the inner wall on either side of the guide vanes 18 to 28 may be inclined by up to 15 degrees. The radius R is not greater than 0À25 times the distance B o . Specification 813,298 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV22533A DE1285960B (en) | 1962-05-22 | 1962-05-22 | Inlet device for Kaplan and Francis turbines |
Publications (1)
Publication Number | Publication Date |
---|---|
SE308491B true SE308491B (en) | 1969-02-10 |
Family
ID=7579917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE5428/63A SE308491B (en) | 1962-05-22 | 1963-05-16 |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT240809B (en) |
CH (1) | CH412748A (en) |
DE (1) | DE1285960B (en) |
GB (1) | GB995178A (en) |
SE (1) | SE308491B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006050203A1 (en) * | 2006-10-25 | 2008-04-30 | Voith Siemens Hydro Power Generation Gmbh & Co. Kg | Hydraulic machine, particularly water turbine, pumping turbine or pump, has impeller with multiple blades, spiral housing surrounding impeller and traverse ring |
DE102011112521A1 (en) * | 2011-09-07 | 2013-03-07 | Voith Patent Gmbh | Francis turbine or Francis pump or Francis pump turbine |
CA2922196A1 (en) * | 2013-09-05 | 2015-03-12 | Andritz Hydro Ltd. | Spiral casing for a hydraulic turbine and method for arranging a spiral casing |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1070560B (en) * | 1959-12-03 | |||
CH78984A (en) * | 1917-12-05 | 1918-09-16 | Mirrlees Watson Company Limite | Innovation in centrifugal pumps |
FR727357A (en) * | 1931-02-06 | 1932-06-17 | Sulzer Ag | Rotary machine operating alternately as a pump or as a turbine |
CH174756A (en) * | 1934-05-29 | 1935-01-31 | Aebi & Co Ag | Slurry pump. |
GB648899A (en) * | 1947-10-06 | 1951-01-17 | Harland Engineering Co Ltd | Improvements in and relating to water turbines |
-
1962
- 1962-05-22 DE DEV22533A patent/DE1285960B/en not_active Withdrawn
-
1963
- 1963-04-22 AT AT322763A patent/AT240809B/en active
- 1963-05-02 CH CH550363A patent/CH412748A/en unknown
- 1963-05-16 SE SE5428/63A patent/SE308491B/xx unknown
- 1963-05-21 GB GB20128/63A patent/GB995178A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1285960B (en) | 1968-12-19 |
GB995178A (en) | 1965-06-16 |
AT240809B (en) | 1965-06-25 |
CH412748A (en) | 1966-04-30 |
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