GB995178A - Improvements in and relating to the admission system of hydraulic turbines - Google Patents

Improvements in and relating to the admission system of hydraulic turbines

Info

Publication number
GB995178A
GB995178A GB20128/63A GB2012863A GB995178A GB 995178 A GB995178 A GB 995178A GB 20128/63 A GB20128/63 A GB 20128/63A GB 2012863 A GB2012863 A GB 2012863A GB 995178 A GB995178 A GB 995178A
Authority
GB
United Kingdom
Prior art keywords
cusp
vanes
thickness
wall
spiral
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.)
Expired
Application number
GB20128/63A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Publication of GB995178A publication Critical patent/GB995178A/en
Expired legal-status Critical Current

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.
GB20128/63A 1962-05-22 1963-05-21 Improvements in and relating to the admission system of hydraulic turbines Expired GB995178A (en)

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
GB995178A true GB995178A (en) 1965-06-16

Family

ID=7579917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20128/63A Expired GB995178A (en) 1962-05-22 1963-05-21 Improvements in and relating to the admission system of hydraulic turbines

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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103732909A (en) * 2011-09-07 2014-04-16 沃依特专利有限责任公司 Francis turbine or francis pump or francis pump turbine
WO2015031987A1 (en) * 2013-09-05 2015-03-12 Andritz Hydro Ltd. Spiral casing for a hydraulic turbine and method for arranging a spiral casing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103732909A (en) * 2011-09-07 2014-04-16 沃依特专利有限责任公司 Francis turbine or francis pump or francis pump turbine
US20140154057A1 (en) * 2011-09-07 2014-06-05 Voith Patent Gmbh Francis turbine or a francis pump or a francis pump turbine
CN103732909B (en) * 2011-09-07 2016-08-17 沃依特专利有限责任公司 The Francis hydraulic turbine or Francis pump or Francis pump turbine
WO2015031987A1 (en) * 2013-09-05 2015-03-12 Andritz Hydro Ltd. Spiral casing for a hydraulic turbine and method for arranging a spiral casing
RU2668189C2 (en) * 2013-09-05 2018-09-26 Андритц Гидро Лтд. Spiral casing for a hydraulic turbine (options)

Also Published As

Publication number Publication date
SE308491B (en) 1969-02-10
AT240809B (en) 1965-06-25
DE1285960B (en) 1968-12-19
CH412748A (en) 1966-04-30

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