DE496605C - Impeller attachment for centrifugal pumps - Google Patents

Impeller attachment for centrifugal pumps

Info

Publication number
DE496605C
DE496605C DEJ38686D DEJ0038686D DE496605C DE 496605 C DE496605 C DE 496605C DE J38686 D DEJ38686 D DE J38686D DE J0038686 D DEJ0038686 D DE J0038686D DE 496605 C DE496605 C DE 496605C
Authority
DE
Germany
Prior art keywords
centrifugal pumps
impeller attachment
shaft
impellers
thermal expansion
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
DEJ38686D
Other languages
German (de)
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.)
C H Jaeger & Co Pumpen und Geb
Original Assignee
C H Jaeger & Co Pumpen und Geb
Publication date
Priority to DEJ38686D priority Critical patent/DE496605C/en
Application granted granted Critical
Publication of DE496605C publication Critical patent/DE496605C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/025—Fixing blade carrying members on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Laufradbafestigung -für Kreiselpumpen Bei Förderung heißer Flüssigkeit und Verwendung von Material mit verschiedener Wärmedehnungszahl für Wellen und Laufräder ergibt sich die Schwierigkeit, daß die Laufräder durch Erwärmung locker werden, wenn die Wärmedehnungszahl des Laufradmaterials größer ist als diejenige des Wellenmaterials. Uri diese Schwierigkeit zu beheben, erhalten die Räder keine auf der Welle befestigte Radnaben, sondern es wird die an sich bekannte Befestigung mittels Distanzbüchsen verwendet, und die Distanzbüchsen werden erfindungsgemäß aus einem Material hergestellt, das etwa die gleiche Wärmedehnungszahl besitzt wie die Welle. Der die Laufräder haltende Teil der Distanzbüchsen kann zweckmäßig mit Schlitzen versehen werden, um eine größere Nachgiebigkeit in radialer und auch in axialer Richtung zu erzielen, so daß eine Wärmedehnung der Laufräder erfolgen kann, ohne daß übermäßig große Spannungen in den die Räder haltenden Distanzbüchsen auftreten.Impeller mounting - for centrifugal pumps When pumping hot liquid and using material with different thermal expansion coefficients for shafts and impellers, the problem arises that the impellers become loose due to heating if the thermal expansion coefficient of the impeller material is greater than that of the shaft material. To solve this problem, the wheels do not have wheel hubs fastened to the shaft, but the known fastening by means of spacer sleeves is used, and the spacer sleeves are made according to the invention from a material that has approximately the same coefficient of thermal expansion as the shaft. The part of the spacer sleeves holding the running wheels can expediently be provided with slots in order to achieve greater flexibility in the radial and also in the axial direction, so that the running wheels can be thermally expanded without excessive stresses occurring in the spacing sleeves holding the wheels.

In der Patentzeichnung ist in Abb. i der Erfindungsgegenstand beispielsweise dargestellt. Die Laufräder i sind auf der Welle :2 lose aufgeschoben. Sie werden gehalten und zentriert von den Distanzbüchsen 3, die aus einem. Material hergestellt sind, das etwa die gleiche Wärmedehnungszahl hat wie die Welle.For example, the subject of the invention is shown in Fig. I in the patent drawing shown. The impellers i are on the shaft: 2 loosely pushed on. you will be held and centered by the spacer sleeves 3, which consist of a. Material made that has approximately the same coefficient of thermal expansion as the shaft.

Abb. 2 zeigt in einem Schnitt durch eine Distanzbüchse beispielsweise die Anordnung der Schlitze in dem die Räder haltenden Teil der Distanzbüchsen.Fig. 2 shows a section through a spacer sleeve, for example the arrangement of the slots in the part of the spacer sleeves that hold the wheels.

Die dargestellte Befestigungsart der Laufrä#der kann sinngemäß auch für Turbinengebläse und andere Kreiselmaschinen verwendet werden.The illustrated method of fastening the impellers can also be used used for turbine blowers and other centrifugal machines.

Claims (2)

PATENTANSPRÜCHE: i. Laufradbefestigung für Kreiselpumpen, .dadurch gekennzeichnet, daß die Laufräder, deren Material eine größere Wärmedehnungszahl besitzt als das Material der Welle, durch entsprechend ausgebildete Distanzbüchsen aus einem Material, dessen Wärmedehnungszahl etwa gleich ist der Welle, gehalten und zentriert werden. PATENT CLAIMS: i. Impeller attachment for centrifugal pumps, .thereby characterized in that the impellers, the material of which has a greater coefficient of thermal expansion possesses as the material of the shaft, through appropriately designed spacer sleeves made of a material whose coefficient of thermal expansion is approximately the same as that of the shaft and be centered. 2. Laufradbefestigung nach Anspruch i, dadurch gekennzeichnet, daß der die Laufräder haltende Teil der Distanzbüchsen geschlitzt ist.2. impeller attachment according to claim i, characterized in that that the part of the spacer sleeves holding the impellers is slotted.
DEJ38686D Impeller attachment for centrifugal pumps Expired DE496605C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEJ38686D DE496605C (en) Impeller attachment for centrifugal pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ38686D DE496605C (en) Impeller attachment for centrifugal pumps

Publications (1)

Publication Number Publication Date
DE496605C true DE496605C (en) 1930-04-24

Family

ID=7205800

Family Applications (1)

Application Number Title Priority Date Filing Date
DEJ38686D Expired DE496605C (en) Impeller attachment for centrifugal pumps

Country Status (1)

Country Link
DE (1) DE496605C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531564A (en) * 1994-02-11 1996-07-02 A. Ahlstrom Corporation Centrifugal pump
US20130216393A1 (en) * 2012-02-21 2013-08-22 Thermodyn Radial impeller with a radially free basic rim

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531564A (en) * 1994-02-11 1996-07-02 A. Ahlstrom Corporation Centrifugal pump
US20130216393A1 (en) * 2012-02-21 2013-08-22 Thermodyn Radial impeller with a radially free basic rim
FR2987069A1 (en) * 2012-02-21 2013-08-23 Thermodyn AUBEE RADIAL WHEEL WITH RADIAL FREE BASE CROWN
EP2631490A1 (en) * 2012-02-21 2013-08-28 Thermodyn Radial-flow impeller with radially free base ring
US9689401B2 (en) 2012-02-21 2017-06-27 Thermodyn Radial impeller with a radially free basic rim

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