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DE1907241U - DAMPING DEVICE FOR WHEEL BLADES OF ROTARY MACHINES. - Google Patents

DAMPING DEVICE FOR WHEEL BLADES OF ROTARY MACHINES.

Info

Publication number
DE1907241U
DE1907241U DEK40981U DEK0040981U DE1907241U DE 1907241 U DE1907241 U DE 1907241U DE K40981 U DEK40981 U DE K40981U DE K0040981 U DEK0040981 U DE K0040981U DE 1907241 U DE1907241 U DE 1907241U
Authority
DE
Germany
Prior art keywords
blades
wire
bores
damping
impeller
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
DEK40981U
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DEK40981U priority Critical patent/DE1907241U/en
Publication of DE1907241U publication Critical patent/DE1907241U/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
    • F01D5/12Blades
    • F01D5/22Blade-to-blade connections, e.g. for damping vibrations
    • 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
    • F01D5/12Blades
    • F01D5/14Form or construction
    • F01D5/16Form or construction for counteracting blade vibration
    • 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
    • F01D5/12Blades
    • F01D5/26Antivibration means not restricted to blade form or construction or to blade-to-blade connections or to the use of particular materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/96Preventing, counteracting or reducing vibration or noise
    • 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
    • F05D2260/00Function
    • F05D2260/96Preventing, counteracting or reducing vibration or noise

Landscapes

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

Description

P.A.769 717*-2.11.ΒίιP.A. 769 717 * -2.11.Βίι

KLDCKNER. Köln, den 30. 10.- 1964 KLDCKNER. Cologne, October 30th - 1964

HUMBOLDT-DEUTZAG. TP Moe/Si D 62/26 Gm HUMBOLDT-DEUTZAG. TP Moe / Si D 62/26 Gm

KÖLNCOLOGNE

Dämpfungseinrichtung für laufradschaufeln von Ere is elmas chinenDamping device for impeller blades from Ere is elmas china

Die Neuerung betrifft eine Einrichtung zur Dämpfung der Schwingungen der Laufradschaufein von radial durchströmten Kreis elmas chinen.The innovation relates to a device for damping the vibrations of the impeller blades with radial flow District elmas chinen.

Bei axial durchströmten Kreiselmaschinen hat man zur Dämpfung der Ausschläge von zu Schwingungen angeregten Laufschaufeln durch Bohrungen in letztere Drähte eingezogen, deren Wirkung darauf beruht, daß sie sich während des Betriebes unter der Einwirkung der Fliehkraft an die Wand der Bohrungen anlegen und die Bewegungen der Schaufeln bremsen. Wichtig ist es hierbei im Sinne der Erzielung einer möglichst großen Eeibungsarbeit offenbar, daß die Drähte in ihren Bohrungen während des Betriebes möglichst satt zur Anlage kommen. Außerdem sollte die Unterbringung solcher Drähte, insbesondere was die Herstellung der Bohrungen angeht, keine allzugroßen Schwierigkeiten bieten. Aufgabe der Neuerung ist es, auch bei Laufrädern von radial durchströmten Kreiselmaschinen unter möglichs weitgehender Erfüllung dieser vorgenannten Bedingungen solche Dämpfungsdrähte zu verwenden, eine Aufgabe, die neuerungsgemäß dadurch gelöst ist, daß die Bohrungen zur Aufnahme des Drahtringes so nahe an den freien Sehaufelenden angebracht sind und. so geneigt zu den Schaufelflächen verlaufen, daß sie leicht am Laufrad hergestellt werden können und daß der einge-In the case of centrifugal machines with axial flow, one has to dampen the deflections of moving blades excited to vibrate drawn through holes in the latter wires, the effect of which is based on the fact that they are during operation under the Apply centrifugal force to the wall of the bores and brake the movement of the blades. It is important here in the sense of achieving the greatest possible friction work, apparently that the wires in their holes during the Come to the plant as full as possible. In addition, should the placement of such wires, especially what the manufacture as far as drilling is concerned, do not present any great difficulties. It is the task of the innovation, also with impellers of centrifugal machines with radial flow under possible To a large extent fulfillment of these aforementioned conditions to use such damping wires, a task that according to the innovation is achieved in that the bores for receiving the wire ring are attached so close to the free ends of the blade are and. run so inclined to the blade surfaces that they can easily be made on the impeller and that the

KLÖCKNER. _ 2 - 30. 10. 1964 KLÖCKNER. _ 2 - October 30, 1964

HUMBOLDT-DEUTZ AG. D 62/26 Gm HUMBOLDT-DEUTZ AG. D 62/26 Gm

KÖLNCOLOGNE

zogene Draht vor und hinter jeder Bohrung eine aus der Bohrungsachse heraus in die allgemeine Umfangsrichtung überleitende Kröpfung aufweist.wire pulled one out of the axis of the hole in front of and behind each hole out in the general circumferential direction Has crank.

Bei Befolgung dieser Lehre "bietet die Herstellung der Bohrungen, auch nachträglich, keine Schwierigkeiten. Die Drähte selbst kommen dadurch, daß sie im Bereich der Bohrungen in deren Achsrichtung verlaufen, mit Sicherheit während des Betriebes satt zur .Anlage und sind zudem durch die Kröpfungen beiderseits der Bohrungen gegen zu starke, da überflüssige und unerwünschte Verschiebungen in Umfanfsrichtung des Rades gesichert.If this teaching is followed, "the production of the bores, even afterwards, no difficulties. The wires themselves come from the fact that they are in the area of the bores in their axial direction run, certainly full of the system during operation and are also due to the cranks on both sides the bores are secured against excessive, unnecessary and undesirable displacements in the circumferential direction of the wheel.

In der Zeichnung ist eine Ausfuhrungsform der Neuerung beispielsweise dargestellt.In the drawing, an embodiment of the innovation is for example shown.

Abb. 1 zeigt das radial von außen nach innen durchströmte Laufrad einer Strömungsmaschine mit axialem Austritt des Mediums in Draufsicht auf die Abströmseite.Fig. 1 shows the impeller of a turbomachine through which flow flows radially from the outside to the inside with an axial outlet of the medium in plan view of the downstream side.

Abb. 2 zeigt ein solches Rad nach Abb. 1 teilweise und etwas vergrößert im abgewickelten Zylinderschnitt am Radius r.Fig. 2 shows such a wheel according to Fig. 1 partially and somewhat enlarged in the developed cylinder section at the radius r.

Bei dem dargestellten Laufrad gehen die Schaufeln 1 innen einstückig in die Laufradnabe 2 und über ihre gesamte radiale Erstreckung einstückig in eine Begrenzungsscheibe 3 über. Abströmseitig stehen die Schaufeln 1 frei und and am Radius rIn the illustrated impeller, the S c blades 1 go in one piece on the inside into the impeller hub 2 and in one piece over their entire radial extent into a limiting disk 3. On the downstream side, the blades 1 are free and at the radius r

O 11.62 hü) O 11.62 hü ) F 360F 360

KLDCKNER. _ 3 - 30. 10. 1964 KLDCKNER. _ 3 - October 30, 1964

UMBOLDT-DEUTZ AG. D 62/26 Gm UMBOLDT-DEUTZ AG. D 62/26 Gm

KÖLNCOLOGNE

zur Kleinhaltung von S cliwingungs aus schlagen der Schaufeln durch einen in Umfangsrichtung verlaufenden Draht 4 miteinander verbunden. Dieser Draht 4 ist, wie insbesondere aus Abb. 2 zu erkennen ist, in den ihn aufnehmenden Bohrungen lose gehalten. Vor und hinter Jeder Bohrung weist ermine Kröpfung dergestalt auf, daß er im Bereich der Bohrung selbst in Achsrichtung letzterer verläuft und trotzdem die allgemeine Umfangsrichtung,. in der der Draht verlaufen soll, eingehalten ist.to keep swinging vibrations small, the blades break through a wire 4 extending in the circumferential direction is connected to one another. This wire 4 is, as shown in particular in Fig. 2 to can be seen, held loosely in the holes receiving it. In front of and behind each hole there is an offset in this way on that it runs in the area of the bore itself in the axial direction of the latter and nevertheless the general circumferential direction. in which the wire should run is observed.

> 11.62 MB F 360> 11.62 MB F 360

Claims (1)

KLOCKNER- -lUMBOLDT-DEUTZAG. - 4 - 30. 10. 1964KLOCKNER- -lUMBOLDT-DEUTZAG. - 4 - October 30, 1964 KÖLN D 62/26 GmCOLOGNE D 62/26 Gm SchutzanspruchClaim to protection Einrichtung zur Dämpfung der Schwingungen der Laufradschaufein von radial durchströmten Kreiselmaschinen, dadurch gekennzeichnet, daß an den freistehenden Schaufelenden, wie an sich "bei axial durchströmten Kreiselmaschinen bekannt, in Bohrungen in den Schaufeln ein in diesen Bohrungen lose gehender, zu einem Ring geschlossener Draht eingezogen ist, daß ferner die Bohrungen zur Aufnahme des Drahtringes so nahe den Schaufelenden angebracht sind und so geneigt zu den Schaufelflächen verlaufen, daß sie am zusammengebauten Laufrad hergestellt v/erden können, und daß der eingezogene dämpfende Draht vor und hinter Jeder Bohrung eine aus der Bohrungsachse heraus in/lie allgemeine Umfangsrichtung überleitende Kröpfung aufweist. Device for damping the vibrations of the impeller blades of centrifugal machines with radial flow, characterized in that that at the free-standing blade ends, as is known per se "in centrifugal machines with axial flow, in bores in the blades a loosely going in these holes, closed to a ring wire is drawn, that also the Bores for receiving the wire ring are attached so close to the blade ends and so inclined to the blade surfaces run so that they can be produced on the assembled impeller, and that the drawn-in damping wire is in front and behind each hole one out of the hole axis has in / lie general circumferential direction transferring crank. O 11.62 (iff) FO 11.62 (iff) F
DEK40981U 1962-03-30 1962-03-30 DAMPING DEVICE FOR WHEEL BLADES OF ROTARY MACHINES. Expired DE1907241U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK40981U DE1907241U (en) 1962-03-30 1962-03-30 DAMPING DEVICE FOR WHEEL BLADES OF ROTARY MACHINES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK40981U DE1907241U (en) 1962-03-30 1962-03-30 DAMPING DEVICE FOR WHEEL BLADES OF ROTARY MACHINES.

Publications (1)

Publication Number Publication Date
DE1907241U true DE1907241U (en) 1964-12-23

Family

ID=33347953

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK40981U Expired DE1907241U (en) 1962-03-30 1962-03-30 DAMPING DEVICE FOR WHEEL BLADES OF ROTARY MACHINES.

Country Status (1)

Country Link
DE (1) DE1907241U (en)

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