DE717581C - Device to compensate for the operational heat stresses occurring in the stator core of electrical machines - Google Patents

Device to compensate for the operational heat stresses occurring in the stator core of electrical machines

Info

Publication number
DE717581C
DE717581C DES124326D DES0124326D DE717581C DE 717581 C DE717581 C DE 717581C DE S124326 D DES124326 D DE S124326D DE S0124326 D DES0124326 D DE S0124326D DE 717581 C DE717581 C DE 717581C
Authority
DE
Germany
Prior art keywords
stator core
electrical machines
compensate
stresses occurring
core
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
DES124326D
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.)
VEM Sachsenwerk GmbH
Original Assignee
Sachsenwerk Licht und Kraft 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 Sachsenwerk Licht und Kraft AG filed Critical Sachsenwerk Licht und Kraft AG
Priority to DES124326D priority Critical patent/DE717581C/en
Application granted granted Critical
Publication of DE717581C publication Critical patent/DE717581C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/18Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Description

Einrichtung zum Ausgleich der im Ständerblechpaket elektrischer Maschinen betriebsmäßig auftretenden Wärmebeanspruchungen Bei elektrischen Maschinen mit besonders kräftiger Kühlung des Außenmantels, insbesondere bei wassergekühlten. Maschinen, tre. ten infolge der starken Temperaturunterschiede zwischen den wärmeerzeugenden und wärmeabführenden Teilen vielfach erhebliche Wärmespannungen auf, die zu Formänderungen der Aufbauteile der Maschine führen können. Insbesondere bei Maschinen mit niedrigem Eisenrücken kann sich .diese Verformung so stark auf das Ständerblechpaket auswirken, daß ein Schleifen zwischen dem Ständerblechpaket und dem sich ebenfalls unter der Wärmewirkung ausdehnenden Läufer eintritt.Device for balancing the electrical machines in the stator core operationally occurring heat loads with electrical machines with particularly powerful cooling of the outer jacket, especially with water-cooled. Machinery, tre. th as a result of the large temperature differences between the heat-generating and heat-dissipating parts often have considerable thermal stresses that lead to changes in shape the structural parts of the machine. Especially with machines with low Iron back, this deformation can have such a strong impact on the stator core that that a grinding between the stator core and which is also under the Thermal effect of expanding runner occurs.

Abb. i der Zeichnung lädt erkennen, daß das in das Gehäuse c eingesetzte Blechpaket b mit dem Rücken fest an der Bohrung des Gehäuses c anliegt und mithin etwa die Temperatur des zwischen c und d hindurchströmenden Kühlwassers annimmt. Dadurch ist im Blechpaket b zwischen dessen Rücken und den Zähnen a ein. besonders großer Temperaturunterschied vorhanden, und das Blechpaket wird sich nach innen ausdehnen. Da sich der Läufer bei seiner Erwärmung nach außen aus dehnt, tritt ein Schleifen zwischen Läufer- und Ständerblechpaket ein.Fig. I of the drawing loads recognize that the inserted into the housing c Laminated core b rests firmly with its back on the bore of the housing c and therefore assumes approximately the temperature of the cooling water flowing through between c and d. As a result, a is in the laminated core b between its back and the teeth a. particularly there is a large temperature difference, and the laminated core will move inwards expand. As the runner expands outward when it is heated, occurs Grind between the rotor and stator core.

Die Erfindung betrifft eine Einrichtung zum Ausgleich der genannten Wärmebeanspruchungen. Der Ausgleich .der Wärmebeanspruchungen wird erfindungsgemäß dadurch erzielt, daß der Blechpaketrücken elastisch ausgebildet ist. Vorteilhafterweise lädt sich diese Elastizität dadurch erreichen, daß das Blechpaket an seinem Außenumfang schräg gezahnt ist.The invention relates to a device for compensating for the above Thermal stresses. The compensation of the thermal stresses is according to the invention achieved in that the back of the laminated core is elastic. Advantageously this elasticity can be achieved by the fact that the laminated core on its outer circumference is diagonally toothed.

Es ist schon bekannt, zum Ausgleich der genannten Wärmespannungen das Ständerblechpaket im Maschinengehäuse nachgiebig zu lagern, indem das Blechpaket an Leisten angeordnet ist, die in radialer Richtung nachgeben. Durch diese nachgiebige Lagerung des Blechpaketes wird aber der feste Aufbau der Maschine erheblich in Mitleidenschaft gezogen. Im Gegensatz hierzu liegt beim Erfindungsgegenstand der Blechpaketrücken unmittelbar an der inneren Gehäusefläche an. Es ist dadurch nicht nur eine an sich bekannte, gute, wärmeleitende Verbindung zwischen dem Maschinengehäuse und Blechpaket gewährleistet, sondern gleichzeitig wird auch trotz der vorgesehenen elastischen Ausbildung des Blechpaketrückens eine stabile Maschine geschaffen.It is already known to compensate for the thermal stresses mentioned to mount the stator core in the machine housing in a flexible manner by removing the sheet metal core is arranged on strips that give way in the radial direction. Through this yielding Storage of the laminated core, however, affects the firm structure of the machine considerably drawn. In contrast to this, the subject of the invention is the back of the laminated core directly on the inner surface of the housing. It is not just one in itself known, good, thermally conductive connection between the machine housing and the laminated core guaranteed, but at the same time it is also elastic despite the provided Training of the laminated core back created a stable machine.

Die Abb. 2, in welcher für die gleichen Teile die Bezeichnungen der Abb. i beibehalten sind, zeigt ein Ausführungsbeispiel des Erfindungsgedankens. Der Rücken des Ständerblechpaketes b ist mittels schräger Zähne e elastisch ausgebildet, so daß sich die im Blechpaket auftretenden Wärmebeanspruchungen nach außen zu ausgleichen können, ohne daß dadurch der feste Aufbau der Maschine in Frage gestellt ist.Fig. 2, in which the designations of the Fig. I are retained, shows an embodiment of the inventive concept. The back of the stator core b is designed to be elastic by means of inclined teeth e, so that the thermal stresses occurring in the laminated core to compensate for the outside without jeopardizing the solid structure of the machine.

Claims (2)

PATENTANSPRÜCHE: i. Einrichtung zum Ausgleich der im Ständerblechpaket elektrischer Maschinen, insbesondere außen durch Wasser kräftig gekühlter elektrischer Maschinen, betriebsmäßig auftretenden Wärmebeanspruchungen, die von einem verhältnismäßig großen Temperaturunterschied zwischen,dem Blechpaket und dem Maschinengehäuse herrühren, dadurch gekennzeichnet, daß der Blechpaketrücken elastisch ausgebildet ist. PATENT CLAIMS: i. Device to compensate for the operational heat stresses occurring in the stator core of electrical machines, in particular the electrical machines strongly cooled by water on the outside, which result from a relatively large temperature difference between the core and the machine housing, characterized in that the back of the core is elastic. 2. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß das Ständerblechpaket (b) an seinem Außenumfang schräg gezahnt ist.2. Establishment according to claim i, characterized in that the stator core (b) on its Outer circumference is serrated at an angle.
DES124326D 1936-09-29 1936-09-29 Device to compensate for the operational heat stresses occurring in the stator core of electrical machines Expired DE717581C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES124326D DE717581C (en) 1936-09-29 1936-09-29 Device to compensate for the operational heat stresses occurring in the stator core of electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES124326D DE717581C (en) 1936-09-29 1936-09-29 Device to compensate for the operational heat stresses occurring in the stator core of electrical machines

Publications (1)

Publication Number Publication Date
DE717581C true DE717581C (en) 1942-02-18

Family

ID=7536547

Family Applications (1)

Application Number Title Priority Date Filing Date
DES124326D Expired DE717581C (en) 1936-09-29 1936-09-29 Device to compensate for the operational heat stresses occurring in the stator core of electrical machines

Country Status (1)

Country Link
DE (1) DE717581C (en)

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