US3840309A - Centrifugal machine - Google Patents

Centrifugal machine Download PDF

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Publication number
US3840309A
US3840309A US00403878A US40387873A US3840309A US 3840309 A US3840309 A US 3840309A US 00403878 A US00403878 A US 00403878A US 40387873 A US40387873 A US 40387873A US 3840309 A US3840309 A US 3840309A
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US
United States
Prior art keywords
propeller shaft
rotor
sleeve
support
propeller
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 - Lifetime
Application number
US00403878A
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English (en)
Inventor
H Eckes
Schanzlin Becker Klein
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.)
Klein Schanzlin and Becker AG
Original Assignee
Klein Schanzlin and Becker AG
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 Klein Schanzlin and Becker AG filed Critical Klein Schanzlin and Becker AG
Application granted granted Critical
Publication of US3840309A publication Critical patent/US3840309A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0055—Rotors with adjustable blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D7/00—Rotors with blades adjustable in operation; Control thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources

Definitions

  • a centrifugal machine such as a centrifugal pump, has a support and a propeller shaft which is rotatably mounted on the support.
  • a plurality of propeller vanes are mounted on the propeller shaft for rotation with the same and can be moved between at least two inclined positions relative to the axis of the propeller shaft.
  • An arrangement is provided for moving the vanes between their positions, and a drive is provided for activating this arrangement.
  • the drive includes a drive shaft coaxial with the propeller shaft and rotatable relative to the same, being connected to the adjusting arrangement.
  • a rotor of an electromotor is mounted on the drive shaft for rotation with the same and a stator surrounds the rotor and is mounted on the supportJA sleeve is mounted on an end portion of the propeller shaft for rotation with the same, and this sleeve is interposed between and out of contact with latter.
  • the present invention relates generally to a centrifugal machine, and more particularly to a centrifugal machine constructed as a centrifugal pump of vertical type.
  • This type of apparatus has the advantage that the entire arrangement for adjusting the inclination of the vanes is located close to the latter, and requires only a small amount of space. It eliminates further the use of a special coupling with a built-in motor for carrying out the adjustment of the vanes, and with a gear drive, which were heretofore required and had to be separately installed. Also, the use of long mechanical connecting elements, such as rods or sleeves with the corresponding couplings, is avoided, and the propeller shaft itself can be of solid cross-section rather than hollow as was necessary in the previous constructions.
  • one feature of the invention resides, in a machine of the character which is described herein, in a combination comprising a support and a propeller shaft rotatably mounted on the support and having an end portion.
  • a plurality of propeller vanes is mounted on the propeller shaft for rotation with the same and also for movement between at least two inclined positions relative to an axis of the propeller shaft.
  • Moving means is provided for effecting the movement of the vanes between their positions, and drive means is provided for driving the moving means.
  • the drive means includes a drive shaft coaxial with the propeller shaft and rotatable relative to the same.
  • the drive shaft is connected to the moving means.
  • a rotor is mounted on the drive shaft for rotation with the same, and a stator surrounds the rotor and is mounted on the support
  • a sleeve is mounted on the end portion.
  • the construction according to the present invention omits the necessity for supplying electrical energy to the electromotor by means of slip rings, and thus avoids the disadvantages attendant thereto.
  • the provision of the sleeve which does not participate in any. movements during changingof the inclination of the vanes, reliably precludes any access of medium being pumped to the components which are to be protected.
  • the medium is of the type which contains solid particles, for instance sand contained in sea water or the like, then damage to the various components of the drive means due to contact with such particles is reliably avoided by the presenceof the sleeve. Such damage might result in a blocking and destruction of the drive if the sleeve were not arranged in the manner disclosed herein.
  • FIGURE is a fragmentary vertical section through a centrifugal pump embodying the invention.
  • the embodiment illustrated in the FIGURE shows the invention on hand of a centrifugal pump of the axial type, having a vertical propeller shaft.
  • the pump has a suction nozzle 1 which is provided with a cross-shaped member 2 serving as a guide and flow rectifier for the incoming liquid being pumped.
  • the member 2 has a hollow hub 3 which constitutes a support on which the stator 4 of an electromotor is mounted. Electrical energy is supplied from the exterior via a cable 5 through a hollow rib of the member 2.
  • a thin-walled hollow cylinder or sleeve 7 is provided on the propeller hub 6, with which it is concentric and to which it is fluid-tightly secured.
  • the sleeve 7 rotates with the hub 6 and is located between but out of contact with the stator 4 and the cage rotor 8, which latter is located within the confines of the stator 4.
  • the rotor 8 is mountedon an elongated drive shaft 9 of a coaxial step-down gear 10 which is also mounted in the hub 3, and the shaft portion 11 of which is configurated as a screw having self-locking threads which cooperate with the internal threads of a spindle nut 13 which is fixedly mounted in a cross-mount 14.
  • the latter is movable only axially of the shaft 11, in dependence upon the turning of the latter and in dependence upon the inclination which it is to impart to the axis 15 of the propeller vanes with respect to the longitudinal axis of rotation 16 of the propeller shaft.
  • a connection between the cross-mount 14 and the propeller vanes 21 can be carried out by means of the double-pivoted lug 17 which can pivot about the pivot points 17a and 17b, or by other means.
  • a roller 22 is provided on the cross-mount 14 and engages in an axially extending guide recess 23.
  • a roller 22 is provided on the cross-mount 14 and engages in an axially extending guide recess 23.
  • two or more such rollers or analogous components can be provided, and each can be arranged to cooperate with its own guide recess 23.
  • a double-acting bearing 24 preferably a roller bearing.
  • a combination comprising a support; a propeller shaft rotatably mountedon said support and having an end portion; a plurality of propeller vanes mounted on said propeller shaft for rotation therewith and for movement between at least two inclined positions relative to an axis'of said propeller shaft; moving means for effecting movement of said vanes between said positions; and drive means for said moving means, including a drive shaft coaxial with said propeller shaft and rotatable relative to the same and connected to said moving means, a electric rotor mounted on said drive shaft for rotation therewith, 'a electric stator surrounding said rotor and mounted on said support, and a sleeve mounted on said end portion of said propeller shaft for rotation with the same, said sleeve being interposed betweenand out of contact with said stator and rotor and fluid-tightly surrounding the latter.
  • said propeller shaft includes a casing mounted on and rotatable with said end portion and having an opening coaxial with said axis; said drive shaft extending through said opening and having one portion located within and another portion locatedwithout said casing, and said rotor being mounted on said other portion.
US00403878A 1972-10-14 1973-10-05 Centrifugal machine Expired - Lifetime US3840309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2250473A DE2250473C2 (de) 1972-10-14 1972-10-14 Axiale bzw. halbaxiale, vertikale Kreiseim aschine

Publications (1)

Publication Number Publication Date
US3840309A true US3840309A (en) 1974-10-08

Family

ID=5859054

Family Applications (1)

Application Number Title Priority Date Filing Date
US00403878A Expired - Lifetime US3840309A (en) 1972-10-14 1973-10-05 Centrifugal machine

Country Status (11)

Country Link
US (1) US3840309A (ja)
JP (1) JPS5761916B2 (ja)
AT (1) AT324126B (ja)
CH (1) CH581260A5 (ja)
DE (1) DE2250473C2 (ja)
DK (1) DK132348C (ja)
FR (1) FR2203444A5 (ja)
GB (1) GB1436151A (ja)
IT (1) IT993316B (ja)
NL (1) NL7314120A (ja)
SE (1) SE394727B (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900274A (en) * 1974-06-25 1975-08-19 Gen Electric Remote controlled actuation system for the rotor of a gas turbine engine
US5281094A (en) * 1991-05-13 1994-01-25 Alliedsignal Inc Electromechanical apparatus for varying blade of variable-pitch fan blades
US5562192A (en) * 1994-11-01 1996-10-08 Dana Corporation Electronic clutch control mechanism for a vehicle transmission
US6042333A (en) * 1995-01-25 2000-03-28 Magiview Pty. Ltd. Adjustable pitch impeller
WO2001079703A1 (en) 2000-04-13 2001-10-25 Tesma International Inc. Variable flow water pump
US20080273976A1 (en) * 2007-02-21 2008-11-06 United Technologies Corporation Variable rotor blade for gas turbine engine
US7757340B2 (en) 2005-03-25 2010-07-20 S.C. Johnson & Son, Inc. Soft-surface remediation device and method of using same
CN106351869A (zh) * 2016-11-03 2017-01-25 江苏省水利勘测设计研究院有限公司 一种前叶轮叶片角度可调的同轴双叶轮轴流式叶片泵

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418881A1 (fr) * 1978-03-03 1979-09-28 Westeel Guy Perfectionnements aux turbomachines et helices a reglage rotorique
DE3318163C2 (de) * 1983-05-19 1986-05-07 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Verstelleinrichtung für Laufschaufeln von einer senkrecht angeordneten Strömungsarbeitsmaschine
JPS6032998A (ja) * 1983-08-03 1985-02-20 Ebara Corp 可動翼を備えた流体機械の翼角制御装置
EP0303917B1 (en) * 1987-08-21 1991-10-30 Ishikawajima-Harima Heavy Industries Co., Ltd. Fluid apparatus
DE4306141A1 (de) * 1993-02-27 1994-10-13 Klein Schanzlin & Becker Ag Verstelleinrichtung für Propellerpumpen
DE4306131A1 (de) * 1993-02-27 1994-09-01 Klein Schanzlin & Becker Ag Strömungsmaschine mit Verstellpropeller
DE4306140A1 (de) * 1993-02-27 1994-09-01 Klein Schanzlin & Becker Ag Hydraulische Verstelleinrichtung
DE4306133A1 (de) * 1993-02-27 1994-09-01 Klein Schanzlin & Becker Ag Verstelleinrichtung hydraulischer Art
DE4446623A1 (de) * 1994-12-24 1996-06-27 Klein Schanzlin & Becker Ag Propellerverstelleinrichtung mit Synchronelement
NL2003467C2 (nl) * 2009-09-10 2011-03-14 Nijhuis Pompen B V Visvriendelijke pomp- of turbineinrichting.
CN110307111B (zh) * 2019-05-20 2021-09-28 湖南天尚科技有限公司 一种水泵水轮调节装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900274A (en) * 1974-06-25 1975-08-19 Gen Electric Remote controlled actuation system for the rotor of a gas turbine engine
US5281094A (en) * 1991-05-13 1994-01-25 Alliedsignal Inc Electromechanical apparatus for varying blade of variable-pitch fan blades
US5562192A (en) * 1994-11-01 1996-10-08 Dana Corporation Electronic clutch control mechanism for a vehicle transmission
US6042333A (en) * 1995-01-25 2000-03-28 Magiview Pty. Ltd. Adjustable pitch impeller
WO2001079703A1 (en) 2000-04-13 2001-10-25 Tesma International Inc. Variable flow water pump
EP2395245A2 (en) 2000-04-13 2011-12-14 Magna Powertrain Inc. Variable flow water pump
US7757340B2 (en) 2005-03-25 2010-07-20 S.C. Johnson & Son, Inc. Soft-surface remediation device and method of using same
US20080273976A1 (en) * 2007-02-21 2008-11-06 United Technologies Corporation Variable rotor blade for gas turbine engine
US7901185B2 (en) * 2007-02-21 2011-03-08 United Technologies Corporation Variable rotor blade for gas turbine engine
CN106351869A (zh) * 2016-11-03 2017-01-25 江苏省水利勘测设计研究院有限公司 一种前叶轮叶片角度可调的同轴双叶轮轴流式叶片泵

Also Published As

Publication number Publication date
DK132348B (da) 1975-11-24
FR2203444A5 (ja) 1974-05-10
SE394727B (sv) 1977-07-04
JPS4995203A (ja) 1974-09-10
DK132348C (da) 1976-04-26
NL7314120A (ja) 1974-04-16
DE2250473B1 (de) 1974-04-25
CH581260A5 (ja) 1976-10-29
DE2250473C2 (de) 1974-11-28
GB1436151A (en) 1976-05-19
JPS5761916B2 (ja) 1982-12-27
AT324126B (de) 1975-08-11
IT993316B (it) 1975-09-30

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