AT81934B - Cooling device on rotors of electrical machines. Cooling device on rotors of electrical machines. - Google Patents

Cooling device on rotors of electrical machines. Cooling device on rotors of electrical machines.

Info

Publication number
AT81934B
AT81934B AT81934DA AT81934B AT 81934 B AT81934 B AT 81934B AT 81934D A AT81934D A AT 81934DA AT 81934 B AT81934 B AT 81934B
Authority
AT
Austria
Prior art keywords
rotors
electrical machines
cooling device
winding
air
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Schuckertwerke Gmbh
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 Siemens Schuckertwerke Gmbh filed Critical Siemens Schuckertwerke Gmbh
Application granted granted Critical
Publication of AT81934B publication Critical patent/AT81934B/en

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  • Motor Or Generator Cooling System (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Kühleinrichtung an Rotoren elektrischer Maschinen. 



   Bei den Rotoren elektrischer Maschinen, insbesondere den Zylinderrotoren von Turbogeneratoren, ist   es'schwierig, die Wickelköpfe ausreichend   zu kühlen, weil diese dicht zusammenliegende Kupfermassen bilden, die für von aussen eingeführte Kühlluft schwer durchdringlich sind. Leitflächen o. dgl. anzubringen, die die Kühlluft in wirksamer Weise durch die   Wickelköpfe hren,   wurde im allgemeinen wegen der grossen   Zentrifugalkrätte   für kaum möglich gehalten. 



   Gemäss der Erfindung wird nun durch eine einfache Einrichtung, bei der der bisherige Aufbau der   Wickelköpfe vollständig beibehalten   werden kann, eine ausgiebige und wirksame Kühlung erzielt, 
 EMI1.1 
 dargestellt. Fig. i ist ein Längsschnitt durch einen Zylinderrotor, Fig. 2 die Abwicklung einer Spulengruppe, Fig. 3 eine Stirnansicht. Die linke Hälfte der Fig. i und 2 zeigt eine, die rechte Hälfte eine zweite Ausführungsform. 



   Unter die an den Stirnenden des Rotors herausragenden geraden Teile 1 der Spulen, in denen die Leiter also in achsialer Richtung verlaufen, werden Abdeckplatten   ; 2 gelegt,   so dass die achsial verlaufenden Teile der   Wicklungsköpfe   nach untenhin verdeckt. sind. 



  Die Platten 2 sind, wie Fig. 3 besonders deutlich zeigt, entsprechend gekrümmt. Die 
 EMI1.2 
 zu gelangen, wird durch die Anordnung der   abgeschrägten   Platten 2, wie sie in der linken Hälfte der   Fig. I   und 2 dargestellt sind, gezwungen, sofort bei ihrem Eintritt in den Raum unter den   Wicklungsköpfen   zwischen die tangential verlaufenden Spulenbündel zu treten und diese auf ihrem grössten Teil, die achsial verlaufenden   vollständig   zu umspülen und zu kühlen.   Macht man   die Abdeckplatten noch grösser, z.

   B. viereckig, wie 
 EMI1.3 
 Stirnverbindungen sogar vollständig und auf ihrem ganzen Lauf umspülen, da nunmehr unter ihnen nur eine schmale Zone für den Eintritt von Luft frei ist und der ganze weitere Weg der Luft   zwangsläufig   durch die Bündel und die Abdeckplatten vorgeschrieben ist. 



   Bisher strömte die Kühlluft   hauptsächlich   in den weiten Raum unterhalb der Wicklung ein und trat erst in der Nähe der Eisenzähne radial nach aussen, um in die Kanäle zu gelangen, so dass sie mit den einzelnen Wicklungsbündeln nur wenig in Berührung kam und sie infolgedessen nur unzulänglich kühlen konnte. 



    PATEXT-AXSPRÜCHE :  
I. Kühleinrichtung für die Wicklungsköpfe von   Zylinderrotoren   elektrischer Maschinen, gekennzeichnet durch die Anordnung gebogener   Luftführungsplatten   unter den achsial verlaufenden Teilen der   Wicklungsbünde ! an   den Stirnenden des Rotors, durch die die Luft gezwungen wird, gleich nach ihrem Eintritt in den   Rotorraum   zwischen die tangential verlaufenden Teile der   Wicklungsbündel   zu treten. 
 EMI1.4 
 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Cooling device on rotors of electrical machines.



   In the case of the rotors of electrical machines, in particular the cylinder rotors of turbo generators, it is difficult to cool the end windings sufficiently, because these form copper masses lying close together and which are difficult to penetrate for cooling air introduced from the outside. To attach guide surfaces or the like, which hear the cooling air in an effective manner through the winding heads, was generally considered to be hardly possible because of the large centrifugal force.



   According to the invention, extensive and effective cooling is now achieved by a simple device in which the previous structure of the winding heads can be completely retained,
 EMI1.1
 shown. Fig. I is a longitudinal section through a cylinder rotor, Fig. 2 the development of a coil group, Fig. 3 is an end view. The left half of FIGS. I and 2 shows one embodiment, the right half a second embodiment.



   Under the straight parts 1 of the coils protruding at the front ends of the rotor, in which the conductors thus run in the axial direction, cover plates are placed; 2, so that the axially extending parts of the winding heads are hidden downwards. are.



  As FIG. 3 shows particularly clearly, the plates 2 are correspondingly curved. The
 EMI1.2
 To get to, is forced by the arrangement of the beveled plates 2, as they are shown in the left half of FIGS. I and 2, immediately when they enter the space under the winding heads to step between the tangential coil bundles and these on their For the most part, the axially running parts are completely flushed and cooled. If you make the cover plates even larger, z.

   B. square, like
 EMI1.3
 Even flush end connections completely and over their entire course, since now only a narrow zone is free for the entry of air below them and the entire further path of the air is inevitably prescribed through the bundle and the cover plates.



   So far, the cooling air has mainly flowed into the wide space below the winding and only stepped radially outwards in the vicinity of the iron teeth in order to get into the channels, so that it came into little contact with the individual winding bundles and consequently only inadequately cooled them could.



    PATEXT-AX Slogans:
I. Cooling device for the winding heads of cylinder rotors of electrical machines, characterized by the arrangement of curved air guide plates under the axially extending parts of the winding collars! at the front ends of the rotor, through which the air is forced to step between the tangential parts of the winding bundle immediately after entering the rotor space.
 EMI1.4
 

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT81934D 1917-05-19 1918-04-24 Cooling device on rotors of electrical machines. Cooling device on rotors of electrical machines. AT81934B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE81934X 1917-05-19

Publications (1)

Publication Number Publication Date
AT81934B true AT81934B (en) 1920-12-10

Family

ID=5639641

Family Applications (1)

Application Number Title Priority Date Filing Date
AT81934D AT81934B (en) 1917-05-19 1918-04-24 Cooling device on rotors of electrical machines. Cooling device on rotors of electrical machines.

Country Status (1)

Country Link
AT (1) AT81934B (en)

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