DE165432C - Lattice-shaped vane drum for radial turbines - Google Patents

Lattice-shaped vane drum for radial turbines

Info

Publication number
DE165432C
DE165432C DE1904165432D DE165432DA DE165432C DE 165432 C DE165432 C DE 165432C DE 1904165432 D DE1904165432 D DE 1904165432D DE 165432D A DE165432D A DE 165432DA DE 165432 C DE165432 C DE 165432C
Authority
DE
Germany
Prior art keywords
lattice
shaped vane
radial turbines
vane drum
blade
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
DE1904165432D
Other languages
German (de)
Inventor
Hugo Lentz
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 filed Critical
Application granted granted Critical
Publication of DE165432C publication Critical patent/DE165432C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02Blade-carrying members, e.g. rotors
    • F01D5/04Blade-carrying members, e.g. rotors for radial-flow machines or engines
    • F01D5/043Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00Geometry
    • F05D2250/20Three-dimensional
    • F05D2250/29Three-dimensional machined; miscellaneous
    • F05D2250/292Three-dimensional machined; miscellaneous tapered

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die Erfindung betrifft eine gitterförmige Schaufeltrommel für Radialturbinen. Die Gitterstäbe werden von den muldenförmig ausgehöhlten Schaufelkörpern gebildet. Je größer die Schaufelbreite gewählt wird, desto mehr Leitvorrichtungen können am Umfange des Rades untergebracht werden, weil entsprechend der Vergrößerung der Schaufelbreite und der damit ermöglichten Verbreite- rung der Leitkanäle die Anzahl der letzteren für eine gegebene Dampfmenge kleiner wird.The invention relates to a lattice-shaped vane drum for radial turbines. the Lattice bars are formed by the trough-shaped hollowed out blade bodies. Ever The larger the blade width is selected, the more guide devices can be perimeter of the wheel, because according to the enlargement of the blade width and the widening tion of the guide channels the number of the latter for a given amount of steam is smaller.

Bei einer Radialturbine mit wiederholterIn the case of a radial turbine with repeated

Beaufschlagung ein und desselben Laufrades ist diese Maßnahme mit einer Vermehrung der Stufenzahl und dadurch mit einer Verringerung der Umlaufszahl zu vereinbaren.Acting on one and the same impeller is this measure with an increase the number of stages and thus to be agreed with a reduction in the number of circulations.

Wegen der in 'den Laufradschaufeln auftretenden, eine Durchbiegung hervorrufenden Fliehkräfte mußte jedoch die Schaufelbreite bisher verhältnismäßig klein gehalten werden. Denn die Betriebssicherheit erfordert der Durchbiegung angemessene Spielräume zwischen den Leit- und Laufschaufeln; mit der Größe der Spielräume vermehren sich aber die Spaltverluste.Because of the bending which occurs in the impeller blades Centrifugal forces, however, have hitherto had to keep the blade width relatively small. Because the operational safety requires adequate clearance between the deflection the guide and rotor blades; but increase with the size of the leeway the gap losses.

Vorliegende Erfindung hat nun zum Zweck, die Schaufelbreiten möglichst groß und die radialen Spielräume möglichst klein halten zu können. Der Erfindungszweck wird dadurch erreicht, daß den Schaufeln zur Unschädlichmachung entgegenwirkender Kräfte eine Vorspannung erteilt wird.The present invention now has the purpose of making the blade widths as large as possible and the To be able to keep radial clearances as small as possible. The purpose of the invention is thereby achieves a pretensioning of the blades in order to render counteracting forces harmless is granted.

Fig. ι zeigt allgemein eine gitterförmige Schaufeltrommel für Radialturbinen, α ist die Turbinenwelle, b die Laufradscheibe, c sind die Schaufeln und d ist ein ringförmiger Körper. Die Schaufeln c sind beiderseits bei f und g eingespannt.Fig. Ι shows generally a lattice-shaped vane drum for radial turbines, α is the turbine shaft, b the impeller disk, c are the blades and d is an annular body. The blades c are clamped on both sides at f and g.

Fig. 2 und 3 stellen eine Ausführungsform des Erfindungsgegenstandes dar. Die Schaufel h wird zunächst in der Bohrung i (Fig. 2) so befestigt, daß die Schaufelmittellinie gegen die Wagerechte unter einem gewissen Winkel geneigt ist. Durch die keilartige Abschrägung k am ringförmigen Körper / wird die Schaufel in eine möglichst wagerechte Lage aufgebogen (Fig. 3).FIGS. 2 and 3 show an embodiment of the subject matter of the invention. The blade h is first fastened in the bore i (FIG. 2) in such a way that the blade center line is inclined at a certain angle with respect to the horizontal plane. Due to the wedge-like bevel k on the annular body /, the blade is bent up into a position that is as horizontal as possible (FIG. 3).

Die in die Schaufel hineingelegte Vorspannung wird zweckmäßig so bestimmt, daß sie die bei der Drehung entwickelte Fliehkraft übertrifft, so daß die Schaufel im Betriebe keine elastischen Formänderungen erleidet. The preload placed in the blade is expediently determined so that it exceeds the centrifugal force developed during rotation, so that the shovel in operations does not suffer any elastic changes in shape.

Zur Erzielung der gewünschten Vorspannung können jedoch auch andere Mittel verwendet werden.However, other means can be used to achieve the desired bias will.

Claims (1)

Patent-AnspRuch :Patent claim: Gitterförmige Schaufeltrommel für Radi al turbinen, dadurch gekennzeichnet, daß den Schaufeln eine den Fliehkräften entgegenwirkende Vorspannung erteilt wird.Lattice-shaped vane drum for radial turbines, characterized in that that the blades are given a bias counteracting the centrifugal forces. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DE1904165432D 1904-12-13 1904-12-13 Lattice-shaped vane drum for radial turbines Expired DE165432C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE165432T 1904-12-13

Publications (1)

Publication Number Publication Date
DE165432C true DE165432C (en) 1905-11-17

Family

ID=42138783

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1904165432D Expired DE165432C (en) 1904-12-13 1904-12-13 Lattice-shaped vane drum for radial turbines

Country Status (1)

Country Link
DE (1) DE165432C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474298A (en) * 1944-09-11 1949-06-28 Borg Warner Fluid wheel
DE19754369A1 (en) * 1996-12-26 1998-07-09 Valeo Climatisation Centrifugal turbine wheel for heating, ventilation or air conditioning unit of vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474298A (en) * 1944-09-11 1949-06-28 Borg Warner Fluid wheel
DE19754369A1 (en) * 1996-12-26 1998-07-09 Valeo Climatisation Centrifugal turbine wheel for heating, ventilation or air conditioning unit of vehicle
US6095752A (en) * 1996-12-26 2000-08-01 Valeo Clamitisation Centrifugal blower impeller, especially for a heating and ventilating, and/or air conditioning, system for a motor vehicle
DE19754369B4 (en) * 1996-12-26 2006-05-04 Valeo Climatisation Centrifugal turbine wheel, in particular for a heating, ventilation and / or air conditioning of a motor vehicle

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