US3204931A - Stay ring for water turbines, pump turbines and pumps - Google Patents

Stay ring for water turbines, pump turbines and pumps Download PDF

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Publication number
US3204931A
US3204931A US278708A US27870863A US3204931A US 3204931 A US3204931 A US 3204931A US 278708 A US278708 A US 278708A US 27870863 A US27870863 A US 27870863A US 3204931 A US3204931 A US 3204931A
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United States
Prior art keywords
stay
ring
turbines
plate
pumps
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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 - Lifetime
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US278708A
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English (en)
Inventor
Edvardsen Edgar Sigfred
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.)
Nydqvist and Holm AB
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Nydqvist and Holm AB
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Application filed by Nydqvist and Holm AB filed Critical Nydqvist and Holm AB
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Publication of US3204931A publication Critical patent/US3204931A/en
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    • 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
    • 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

Definitions

  • the present invention relates to stay wheels for water turbines, pump turbines and pumps, and particularly to the form of the stay rings comprised in the stay wheels in a welded design.
  • the stay wheel which consists of an upper and a lower stay ring and a number of intermediary stays, serves two purposes. For one thing, it comprises part of the water-ways, as it guides the water between the feed spiral and the guide wheel and, for another thing, it absorbs the forces between the feed spiral, the head cover and the bottom ring.
  • a stay ring of a welded design for water turbines, pump turbines and pumps and is characterized, in general, in that said stay ring is constructed of a plane ring-formed plate, fitted at right angles to the shaft of the unit, and a conical sweep, which connects said ring-formed plane plate to the feed spiral.
  • the conical sweep should appropriately be inclined at such an angle that the forces emanating from the feed spiral obtain the least possible torque lever and, further, the plate comprises a direct extension of the plate in the feed spiral.
  • the conical sweep can possibly be supplemented with a thin covering plate, to obtain improved flow conditions and, finally, the stay ring can be made with stiiiening elements.
  • FIGURE 1 shows in perspective, and with certain parts cut away, a stay wheel with stay rings made according to the present invention, and FIGURE 2, a section through the upper of these stay rings.
  • FIGURE 3 shows a section of an upper stay ring according to a modified design of the present invention.
  • FIGURES 1 and 2 1 designates a plane, ring-formed plate, arranged at right angles to the shaft of the unit.
  • a conical plate sweep 2 is welded to this plane, ring- Patented Sept. 7, 1965 formed plate 1.
  • the conical sweep 2 is inclined at such an angle that the forces emanating from the feed spiral (not shown in the figure) are given the least possible torque lever.
  • the seam between the two parts 1 and 2 should be machined on the side directed downwards, so that a well rounded transition is obtained.
  • the two plate elements 1 and 2 are comparatively easy to manufacture, and together give a very stable stay ring even when the plates used have only moderate dimensions.
  • This stay ring 12 is welded to the upper part of the stays 3, the lower ends of which are connect-ed to a stay ring 4-5 made in the same way.
  • the stay ring composed of the plane, ring-formed plate and the conical sweep can be supplemented with a thin covering plate 8, which guides the water in the way desired.
  • a thin covering plate 8 which guides the water in the way desired.
  • the plane, ring-formed plate 6 and the conical sweep 7 are rounded oli by the covering plate 8.
  • the stay 9 is fastened to the plate elements 6 and 7, and the only purpose of the covering plate 8 is to guide the water.
  • it can be made of comparatively thin plate, whereby it will be easy to manufacture.
  • the stay ring made of the plane, ring-formed plate and the conical sweep have entirely satisfactory mechanical stability, but if it should be desired to further improve this stability, this can be achieved by means of stiifening elements of a simple geometrical form.
  • FIGURE 3 it is shown in FIGURE 3 how the stay ring 67-8 has been provided with a cylindrical stiiiener 10.
  • the stay 9 protrudes through the conical sweep 7 and is firmly attached to the cylindrical stiffening ring 10.
  • a stay ring structure for turbines and turbine pumps comprising an annular plate, a plane sweep ring fixedly secured along one edge to the outer periphery of said plate, said sweep ring including a slot and extending outwardly of said plate at an angle in reference to the plane thereof, said sweep ring including at least one stay and an annular stiffening member secured to said annular plate coaxially therewith and rising therefrom on the same side as said sweep ring, said stay extending through said slot and being secured to said stiffening member, and a flow-guide plate covering the outside of said sweep ring and secured thereto along its edges and extending to the outer periphery of said annular plate, said flow-guide plate being concavely curved in reference to said sweep ring.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US278708A 1962-05-07 1963-05-07 Stay ring for water turbines, pump turbines and pumps Expired - Lifetime US3204931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE510462 1962-05-07

Publications (1)

Publication Number Publication Date
US3204931A true US3204931A (en) 1965-09-07

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ID=20265718

Family Applications (1)

Application Number Title Priority Date Filing Date
US278708A Expired - Lifetime US3204931A (en) 1962-05-07 1963-05-07 Stay ring for water turbines, pump turbines and pumps

Country Status (2)

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US (1) US3204931A (es)
ES (1) ES288324A1 (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406945A (en) * 1965-10-06 1968-10-22 Dominion Eng Works Ltd Laminated joint
US3904311A (en) * 1972-08-21 1975-09-09 Hitachi Ltd Hydraulic machine
US4269568A (en) * 1976-09-28 1981-05-26 Aktiebolaget Karlstads Mekaniska Werkstad Stay ring for the spiral casing of a rotary hydraulic machine
EP0037432A2 (en) * 1980-04-07 1981-10-14 Guy F. Atkinson Company Flow-adjusted hydraulic rotary machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1896644A (en) * 1930-10-04 1933-02-07 Allis Chalmers Mfg Co Hydraulic turbine
US2291110A (en) * 1940-02-27 1942-07-28 Baldwin Locomotive Works Leakage control for adjustable guide vanes
US2524390A (en) * 1948-09-20 1950-10-03 Hudson Engineering Corp Fan ring
DE876230C (de) * 1949-03-20 1953-05-11 Voith Gmbh J M Turbinendeckel
US2736530A (en) * 1949-03-19 1956-02-28 Voith Gmbh J M Head cover for turbines and pumps
US2808227A (en) * 1952-09-12 1957-10-01 Neyrpic Ets Means for absorbing vibrations
US3051441A (en) * 1960-08-23 1962-08-28 Dominion Eng Works Ltd Dry band francis turbine
US3139265A (en) * 1960-01-28 1964-06-30 Nydqvist & Holm Ab Turbine and pump runner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1896644A (en) * 1930-10-04 1933-02-07 Allis Chalmers Mfg Co Hydraulic turbine
US2291110A (en) * 1940-02-27 1942-07-28 Baldwin Locomotive Works Leakage control for adjustable guide vanes
US2524390A (en) * 1948-09-20 1950-10-03 Hudson Engineering Corp Fan ring
US2736530A (en) * 1949-03-19 1956-02-28 Voith Gmbh J M Head cover for turbines and pumps
DE876230C (de) * 1949-03-20 1953-05-11 Voith Gmbh J M Turbinendeckel
US2808227A (en) * 1952-09-12 1957-10-01 Neyrpic Ets Means for absorbing vibrations
US3139265A (en) * 1960-01-28 1964-06-30 Nydqvist & Holm Ab Turbine and pump runner
US3051441A (en) * 1960-08-23 1962-08-28 Dominion Eng Works Ltd Dry band francis turbine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406945A (en) * 1965-10-06 1968-10-22 Dominion Eng Works Ltd Laminated joint
US3904311A (en) * 1972-08-21 1975-09-09 Hitachi Ltd Hydraulic machine
US4269568A (en) * 1976-09-28 1981-05-26 Aktiebolaget Karlstads Mekaniska Werkstad Stay ring for the spiral casing of a rotary hydraulic machine
EP0037432A2 (en) * 1980-04-07 1981-10-14 Guy F. Atkinson Company Flow-adjusted hydraulic rotary machine
EP0037432A3 (en) * 1980-04-07 1982-03-31 Guy F. Atkinson Company Flow-adjusted hydraulic rotary machine
US4355953A (en) * 1980-04-07 1982-10-26 Guy F. Atkinson Company Flow-adjusted hydraulic rotary machine

Also Published As

Publication number Publication date
ES288324A1 (es) 1963-12-01

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