AT55827B - Safety device on oil transformers with rectangular coils. - Google Patents

Safety device on oil transformers with rectangular coils.

Info

Publication number
AT55827B
AT55827B AT55827DA AT55827B AT 55827 B AT55827 B AT 55827B AT 55827D A AT55827D A AT 55827DA AT 55827 B AT55827 B AT 55827B
Authority
AT
Austria
Prior art keywords
safety device
coils
transformer
rectangular coils
oil
Prior art date
Application number
Other languages
German (de)
Inventor
Otto Titus Blathy
Original Assignee
Otto Titus Blathy
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 Otto Titus Blathy filed Critical Otto Titus Blathy
Application granted granted Critical
Publication of AT55827B publication Critical patent/AT55827B/en

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  • Housings And Mounting Of Transformers (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Sicherungseinrichtung an   Öltransformatoren   mit rechteckigen Spulen. 



   Bei Transformatoren für sehr hohe Leistungen können bei Kurzschluss in gewissen Fällen ausserordentlich grosse elektrodynamische Kräfte auftreten, die bei rechteckig gestalteten Spulen an den Langseiten derselben gefährliche Formänderungen zu erzeugen vermögen. An den einander zugekehrten Seiten der Spulen der nebeneinanderliegenden Schenkeln eines mehrschenkeligen Transformators (vergl. Fig. 1 und 2) ist es leicht,   dlesf'n Kräften   mittels isolierender Stützen a entgegenzuwirken, die zwischen die einander zugekehrten Flächen b, b der Transformatorwicklungen c, c fest eingeklemmt sind, da die in der Richtung der Pfeile d, d auftretenden Kräfte die isolierenden Stützen a auf Druck beanspruchen, denen sie gut zu widerstehen vermögen.

   Das Abstützen der äusseren Langseiten   e   der Spulen verursacht jedoch insbesondere   hei Öltransformatoren bedeutende   Schwierigkeiten. 



   Gemäss vorliegender Erfindung werden die äusseren Langseiten der Transformatorspulen dadurch gegen die elektrodynamischen Stosskräfte abgestützt, dass die isolierenden   Stiltzkörper   an die äusseren Langseiten der Transformatorspulen mittels lösbarer Pressvorrichtungen angedrückt werden, die an den Wandungen des   Öl behälters   des Transformators ihr Widerlager haben. 



   Die Fig. 3 und 4 der Zeichnung zeigt ein Ausführungsbeispiel des Erfindungsgegenstandes in lotrechtem und wagerechtem Schnitte. 



   Die äusseren Langseiten e der rechteckigen Spulen c sind durch isolierende Stützen h gestützt, die mittels Schrauben i gegen die Spulen gepresst werden. Die Schraubeu i sind durch Muttern der Wand   9   des Ölbehälters geführt und können von aussen angezogen bzw. gelockert werden. 



   Nach Einsetzen des Transformators in den Ölbehälter und nach Einbringen der isolierenden Stützen h zwischen den Transformator und den Schrauben i werden diese letzteren fest angezogen. Nach Lockern der Schrauben i kann der Transformator leicht aus dem Behälter herausgehoben werden. Die Stützen h können auch derart mit dem
Transformator verbunden sein, dass sie mit diesem zugleich eingesetzt und herausgehoben werden, diese Verbindung braucht indessen keine nennenswerte Festigkeit zu besitzen, da die auftretenden elektrodynamischen Kräfte durch die Schrauben i aufgenommen werden. 



     Dem Ölbehälter die notige Festigkeit   zu geben, um den in Betracht kommenden, durch die Schrauben i   übermittelten Kräften   Widerstand leisten zu können, bietet keine
Schwierigkeiten. 



   PATENT-ANSPRUCHE :
1. Sicherungseinrichtung an   Öl transformatoren   mit rechteckigen Spulen, dadurch   kennzeichnet,   dass gegen die   äusseren   Langseiten der Transformatorspulen isolierende
Stützkörper (h) mittels lösbarer   Pressvorrichtungen   angedrückt werden, die an den Wandungen des   Obehälters des Transformators   ihr Widerlager haben. 

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



   <Desc / Clms Page number 1>
 



  Safety device on oil transformers with rectangular coils.



   In the case of transformers for very high powers, in certain cases extremely large electrodynamic forces can occur in the event of a short circuit, which, in the case of rectangular coils, can produce dangerous shape changes on the long sides of the same. On the facing sides of the coils of the adjacent legs of a multi-leg transformer (see Fig. 1 and 2), it is easy to counteract the forces by means of insulating supports a, which between the facing surfaces b, b of the transformer windings c, c are firmly clamped, since the forces occurring in the direction of arrows d, d stress the insulating supports a under pressure, which they are able to withstand well.

   The support of the outer long sides e of the coils, however, causes significant difficulties, especially in oil transformers.



   According to the present invention, the outer long sides of the transformer coils are supported against the electrodynamic impact forces in that the insulating support bodies are pressed against the outer long sides of the transformer coils by means of releasable pressing devices that have their abutments on the walls of the transformer's oil tank.



   3 and 4 of the drawing show an embodiment of the subject invention in vertical and horizontal sections.



   The outer long sides e of the rectangular coils c are supported by insulating supports h which are pressed against the coils by means of screws i. The screw eu i are passed through nuts of the wall 9 of the oil container and can be tightened or loosened from the outside.



   After inserting the transformer in the oil container and after inserting the insulating supports h between the transformer and the screws i, the latter are tightened firmly. After loosening the screws i, the transformer can easily be lifted out of the container. The supports h can also so with the
Transformer be connected so that they are used and lifted out with this at the same time, but this connection does not need to have any significant strength, since the electrodynamic forces that occur are absorbed by the screws i.



     To give the oil container the necessary strength to be able to withstand the forces in question, transmitted by the screws i, does not offer any
Difficulties.



   PATENT CLAIMS:
1. Safety device on oil transformers with rectangular coils, characterized in that insulating against the outer long sides of the transformer coils
Support body (h) are pressed on by means of releasable pressing devices, which have their abutment on the walls of the upper container of the transformer.

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

 

Claims (1)

2. Ausführungsform der Einrichtung nach Anspruch l, dadurch gekennzeichnet, dass zum Anpressen der isolierenden Stützkörper (h) durch Muttern der Wandung des Ölbehälters hindurchgeführte, von aussen anziehbare Schrauben (i) dienen. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Embodiment of the device according to claim 1, characterized in that for pressing the insulating support body (h) through nuts of the wall of the oil container, externally tightenable screws (i) are used. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT55827D 1911-10-23 1911-10-23 Safety device on oil transformers with rectangular coils. AT55827B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT55827T 1911-10-23

Publications (1)

Publication Number Publication Date
AT55827B true AT55827B (en) 1912-10-10

Family

ID=3577377

Family Applications (1)

Application Number Title Priority Date Filing Date
AT55827D AT55827B (en) 1911-10-23 1911-10-23 Safety device on oil transformers with rectangular coils.

Country Status (1)

Country Link
AT (1) AT55827B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2838697A1 (en) * 1977-09-06 1979-03-08 Rte Corp TRANSFORMER AND PROCESS FOR ITS MANUFACTURING
DE2832293A1 (en) * 1977-10-18 1979-04-19 Transform Roentgen Matern Veb Support unit for transformer windings - with clear gap left between supporting plate and winding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2838697A1 (en) * 1977-09-06 1979-03-08 Rte Corp TRANSFORMER AND PROCESS FOR ITS MANUFACTURING
DE2832293A1 (en) * 1977-10-18 1979-04-19 Transform Roentgen Matern Veb Support unit for transformer windings - with clear gap left between supporting plate and winding

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