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FR2568716A1 - INSULATING ELEMENT FOR HIGH VOLTAGE DEVICES - Google Patents

INSULATING ELEMENT FOR HIGH VOLTAGE DEVICES Download PDF

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Publication number
FR2568716A1
FR2568716A1 FR8511625A FR8511625A FR2568716A1 FR 2568716 A1 FR2568716 A1 FR 2568716A1 FR 8511625 A FR8511625 A FR 8511625A FR 8511625 A FR8511625 A FR 8511625A FR 2568716 A1 FR2568716 A1 FR 2568716A1
Authority
FR
France
Prior art keywords
insulating
ring
cylinder
high voltage
insulating element
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.)
Granted
Application number
FR8511625A
Other languages
French (fr)
Other versions
FR2568716B1 (en
Inventor
Otto Potocnik
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.)
H Weidmann AG
Original Assignee
H Weidmann 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 H Weidmann AG filed Critical H Weidmann AG
Publication of FR2568716A1 publication Critical patent/FR2568716A1/en
Application granted granted Critical
Publication of FR2568716B1 publication Critical patent/FR2568716B1/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/324Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Insulating Bodies (AREA)
  • Insulating Of Coils (AREA)
  • Organic Insulating Materials (AREA)
  • Inorganic Insulating Materials (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1. Insulating element for high voltage devices, consisting of an insulating cylinder (10) and an insulating ring (11', 12') attached to the insulating cylinder (10) so that an overlaps is formed, in which the insulating cylinder (10) is thinned in the overlap region by reducing its wall thickness and the overlap (11'a, 12'a) is dimensioned in such a way that the end of the insulating ring (11', 12') facing the insulating cylinder (10) lies in an approximately homogeneous part of the field, characterised in that at least in the overlap region (11'a, 12'a) the insulating ring (11', 12') is of conical construction but has a constant wall thickness and the cone angle of the insulating ring (11', 12') corresponds to the angle of thinning of the insulating cylinder (10).

Description

Elément isolant pour appareils haute tension L'invention a pour objet unInsulating element for high voltage devices The subject of the invention is a

élément isolant pour appareils haute tension, se composant d'un cylindre isolant sur lequel est rapporté un anneau isolant de manière à le chevaucher, le cylindre isolant étant effilé dans la zone de chevauchement par diminution de l'épaisseur  insulating element for high-voltage devices, consisting of an insulating cylinder to which an insulating ring is attached so as to overlap it, the insulating cylinder being tapered in the overlapping zone by reduction of the thickness

de sa paroi.of its wall.

Les éléments isolants du type tel que spécifié ci-dessus en préambule s'utilisent par exemple pour l'isolation des terminaisons de transformateurs ou de  The insulating elements of the type as specified above in the preamble are used for example for the insulation of transformer or terminal terminations.

bobines de self sous haute tension.high voltage choke coils.

Le mode de réalisation selon l'art antérieur d'un élément isolant de ce type va être décrit tout d'abord en regard de la figure 1. La figure 1 est une coupe partielle d'un transformateur à bain d'huile dont l'enroulement basse tension porte la référence 1 et  The embodiment according to the prior art of an insulating element of this type will be described firstly with reference to Figure 1. Figure 1 is a partial section of an oil bath transformer whose low voltage winding carries the reference 1 and

l'enroulement haute tension, la référence 2.  high voltage winding, reference 2.

Des éléments isolants 3 à 9 sont disposés  Insulating elements 3 to 9 are arranged

dans l'espace rempli d'huile et compris entre les enrou-  in the oil filled space between the reels

lements 1 et 2 dans l'exemple de réalisation représenté.  Lements 1 and 2 in the embodiment shown.

Chacun des éléments isolants 4 à 7 conformés de manière identique se compose d'un cylindre isolant sur lequel est rapporté un anneau coudé 11. La figure  Each of the insulating elements 4 to 7 identically shaped consists of an insulating cylinder to which is attached a bent ring 11. The figure

2 représente en détail un anneau coudé 11 de ce genre.  2 shows in detail a bent ring 11 of this kind.

Il comprend une partie cylindrique lia et une bride 11b orientée vers l'extérieur. Il faut noter pour comprendre la relation entre les figures 1 et 2 que la figure 1 est une coupe par la partie droite de l'anneau coudé 11 (en position retournée, c'est-à-dire dont la partie cylindrique 11a est tournée vers le bas). Les éléments isolants 5, 6 et 7 sont réalisés de manière identique à celle de l'élément isolant 4; la seule différence  It comprises a cylindrical part 11a and a flange 11b oriented towards the outside. It should be noted in order to understand the relationship between FIGS. 1 and 2 that FIG. 1 is a section through the right part of the bent ring 11 (in the inverted position, that is to say of which the cylindrical part 11a is turned towards the bottom). The insulating elements 5, 6 and 7 are produced in the same way as that of the insulating element 4; the only difference

réside dans la dimension de l'anneau coudé 11, en parti-  lies in the dimension of the bent ring 11, in part

culier du rayon de courbure entre la partie cylindrique  base of the radius of curvature between the cylindrical part

11a et la bride 11b.11a and the flange 11b.

L'élément isolant 3 se compose d'un cylindre isolant 10 et d'un anneau isolant conformé en capot  The insulating element 3 consists of an insulating cylinder 10 and an insulating ring shaped as a cover.

annulaire 12 que représente schématiquement la figure 3.  annular 12 shown diagrammatically in FIG. 3.

Le capot en anneau 12 comprend une partie cylindrique  The ring cover 12 comprises a cylindrical part

12a et une bride 12b tournées vers l'intérieur.  12a and a flange 12b facing inwards.

Les cylindres 10 des éléments isolants 3 à 7 sont effilés à l'extrémité tournée vers les anneaux coudés 11 ou le capot en anneau 12 par réduction de l'épaisseur de leur paroi. De manière analogue, dans les modes de réalisation connus que représente la figure 1, la partie cylindrique lia des anneaux coudés 11 ou la partie cylindrique 12a du capot en anneau 12 est effilée dans la zone de chevauchement par réduction  The cylinders 10 of the insulating elements 3 to 7 are tapered at the end facing the bent rings 11 or the ring cover 12 by reducing the thickness of their wall. Similarly, in the known embodiments shown in FIG. 1, the cylindrical part 11a of the bent rings 11 or the cylindrical part 12a of the ring cover 12 is tapered in the overlapping zone by reduction

de l'épaisseur de sa paroi.the thickness of its wall.

Il n'existe ainsi aucune surépaisseur de matière  There is thus no excess material

dans la plage de chevauchement.in the overlap range.

Toutefois, ce mode de réalisation connu a l'inconvénient que l'arête effilée des deux éléments amincis (du cylindre 10 et de l'anneau coudé 11 ou du  However, this known embodiment has the drawback that the tapered edge of the two thinned elements (of the cylinder 10 and of the bent ring 11 or of the

capot en anneau 12) risque fortement de subir des déchi-  ring cover 12) highly likely to be torn

rures. Il en résulte essentiellement au transport et au montage des difficultés. La réalisation des parties  rures. This essentially results in transport and assembly of difficulties. The realization of the parts

effilées est par ailleurs relativement coûteuse.  tapered is otherwise relatively expensive.

L'invention a pour objet un élément isolant du type tel que spécifié en préambule, mais qui évite les inconvénients mentionnés, c'est-à-dire ayant une même solidité électrique mais une résistance mécanique supérieure et dont la réalisation, le transport ainsi  The subject of the invention is an insulating element of the type as specified in the preamble, but which avoids the drawbacks mentioned, that is to say having the same electrical solidity but a higher mechanical resistance and the production, transport and

que le montage sont simplifiés.that the assembly are simplified.

L'invention se caractérise par les particula-  The invention is characterized by the particular

rités suivantes: a) l'anneau isolant est conique au moins dans la zone de chevauchement, mais l'épaisseur de sa paroi est constante, l'angle formé par le cône de l'anneau isolant correspondant à l'angle d'effilement du cylindre isolant; b) la zone de chevauchement est dimensionnée de manière que l'extrémité de l'anneau isolant tournée  following rites: a) the insulating ring is conical at least in the overlapping zone, but the thickness of its wall is constant, the angle formed by the cone of the insulating ring corresponding to the taper angle of the insulating cylinder; b) the overlap area is dimensioned so that the end of the insulating ring is turned

vers le cylindre se trouve dans une partie approxima-  towards the cylinder is in an approximate part

tivement homogène du champ.homogeneous field.

La figure 4 représente un exemple de réalisation de l'invention. Les mêmes références que sur la figure 1  FIG. 4 represents an exemplary embodiment of the invention. The same references as in Figure 1

sont utilisées pour les mêmes éléments.  are used for the same items.

Le cylindre 10 des éléments isolants 3 à 7 est conformé de la même manière que dans le mode d'exécu- tion connu de la figure 1, c'est-à-dire qu'il est effilé  The cylinder 10 of the insulating elements 3 to 7 is shaped in the same way as in the known embodiment of FIG. 1, that is to say that it is tapered

dans la zone de chevauchement par réduction de l'épais-  in the overlap area by reducing the thickness

seur de sa paroi.of its wall.

Par contre, les anneaux coudés 11' et le capot en anneau 12' sont conformés de manière différente de celle du mode de réalisation selon la figure 1. Ils sont coniques dans la zone de chevauchement 11'a ainsi que 12'a, mais l'épaisseur de leur paroi est constante, l'angle formé par le cône correspondant à 1 ' angle  On the other hand, the bent rings 11 ′ and the ring cover 12 ′ are shaped differently from that of the embodiment according to FIG. 1. They are conical in the overlapping region 11 ′ a as well as 12 ′ a, but the their wall thickness is constant, the angle formed by the cone corresponding to the angle

d'effilement du cylindre isolant 10.  of the insulating cylinder 10.

Il en résulte à l'extrémité de l'anneau coudé 11' ainsi que du capot en anneau 12' qui est tournée vers le cylindre 10 une surépaisseur de matière 13, mais qui se trouve dans une partie sensiblement homogène du champ (sur la figure 4, deux surfaces équipotentielles 14, 15 du champ sont représentées schématiquement pour indiquer la conformation de ce dernier). A cette fin, les zones de chevauchement 11'a ainsi que 12'a sont  This results in the end of the bent ring 11 'and of the ring cover 12' which faces the cylinder 10 an excess thickness of material 13, but which is located in a substantially homogeneous part of the field (in the figure 4, two equipotential surfaces 14, 15 of the field are shown diagrammatically to indicate the conformation of the latter). To this end, the overlapping areas 11 ′ a as well as 12 ′ a are

dimensionnées de manière correspondante.  correspondingly sized.

La solution selon l'invention évite la néces-  The solution according to the invention avoids the need for

sité des modes de réalisation de l'art antérieur d'effiler  sity of embodiments of the prior art to taper

les anneaux coudés 11' ainsi que les capots en anneau 12'.  the angled rings 11 ′ as well as the ring covers 12 ′.

Il en résulte pour une même solidité électrique une  The result for the same electrical solidity is

résistance mécanique notablement supérieure. En consé-  significantly higher mechanical resistance. Therefore

quence, le transport et le montage en sont simplifiés.  As a result, transport and assembly are simplified.

Dans la solution selon l'invention que repré-  In the solution according to the invention that represented

sente schématiquement la figure 4, les anneaux coudés 11' et les capots en anneau 12' peuvent être placés en position favorable du point de vue du champ, le canal  schematically feel Figure 4, the elbow rings 11 'and the ring covers 12' can be placed in a favorable position from the point of view of the field, the channel

d'huile nécessaire au refroidissement pouvant être con-  oil required for cooling that can be

servé entre les enroulements 1 et 2. Les surépaisseurs  served between windings 1 and 2. The extra thicknesses

de matière 13 ne se trouvent que dans la partie rela-  of material 13 are only found in the rela-

tivement non critique du champ homogène.  tively uncritical of the homogeneous field.

Claims (3)

REVENDICATIONS 1. Elément isolant pour appareils haute tension, se composant d'un cylindre isolant (10) sur lequel est rapporté un anneau isolant (11', 12') de manière à le chevaucher, le cylindre isolant (10) étant effilé dans la zone de chevauchement par réduction de l'épaisseur de sa paroi, caractérisé par les particularités suivantes: a) l'anneau isolant (11', 12') est conique au moins dans la zone de chevauchement (11'a, 12'a), mais l'épaisseur de sa paroi est constante, l'angle  1. Insulating element for high voltage devices, consisting of an insulating cylinder (10) to which an insulating ring (11 ', 12') is attached so as to overlap it, the insulating cylinder (10) being tapered in the area overlapping by reducing the thickness of its wall, characterized by the following features: a) the insulating ring (11 ', 12') is conical at least in the overlapping zone (11'a, 12'a), but the thickness of its wall is constant, the angle du cône formé par l'anneau isolant (11', 12') correspon-  of the cone formed by the insulating ring (11 ', 12') corresponding dant à l'angle d'effilement du cylindre isolant (10); b) la zone de chevauchement (11'a, 12'a) est dimensionnée de manière que l'extrémité de l'anneau isolant (11', 12') qui est tournée vers le cylindre (10) se trouve dans une partie sensiblement homogène  at the taper angle of the insulating cylinder (10); b) the overlapping area (11'a, 12'a) is dimensioned so that the end of the insulating ring (11 ', 12') which faces the cylinder (10) is in a substantially part homogeneous du champ.of the field. 2. Elément isolant selon la revendication 1, caractérisé en ce que l'anneau isolant est formé d'un anneau coudé (11') dont la bride est tournée vers l'extérieur.  2. Insulating element according to claim 1, characterized in that the insulating ring is formed of a bent ring (11 ') whose flange faces outwards. 3. Elément isolant selon la revendication 1, caractérisé en ce que l'anneau isolant est formé d'un capot en anneau (12') dont la bride est tournée3. Insulating element according to claim 1, characterized in that the insulating ring is formed by a ring cover (12 ') whose flange is turned vers l'intérieur.towards the inside.
FR8511625A 1984-07-31 1985-07-30 INSULATING ELEMENT FOR HIGH VOLTAGE DEVICES Expired FR2568716B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84109060A EP0169922B1 (en) 1984-07-31 1984-07-31 Insulating member for high-voltage devices

Publications (2)

Publication Number Publication Date
FR2568716A1 true FR2568716A1 (en) 1986-02-07
FR2568716B1 FR2568716B1 (en) 1987-12-18

Family

ID=8192085

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8511625A Expired FR2568716B1 (en) 1984-07-31 1985-07-30 INSULATING ELEMENT FOR HIGH VOLTAGE DEVICES

Country Status (4)

Country Link
EP (1) EP0169922B1 (en)
AT (1) ATE27666T1 (en)
DE (1) DE3464102D1 (en)
FR (1) FR2568716B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008922B4 (en) * 2006-02-21 2009-01-02 Siemens Ag Electric shielding arrangement
CN101425368B (en) * 2008-05-07 2012-07-04 常州市英中电气有限公司 Insulation collar ring used for super-high or extra-high voltage transformer and production process thereof
DE102010063979A1 (en) 2010-12-22 2012-06-28 Siemens Aktiengesellschaft Electrical shielding arrangement of a separation point of a wiring for a HVDC component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894419C (en) * 1942-02-07 1953-10-26 Siemens Ag Isolation arrangement for high-voltage single-phase transformers
DE909479C (en) * 1939-08-12 1954-04-22 Siemens Ag Winding arrangement for high voltage transformers
DE1091225B (en) * 1958-02-06 1960-10-20 Licentia Gmbh Isolation arrangement between windings of different voltages built up from disc coils for high voltage transformers u. like
DE974694C (en) * 1940-06-27 1961-03-30 Siemens Ag Angled ring arrangement consisting of several prefabricated angled rings on top of one another for the end insulation of windings for transformers and inductors
DE1244945B (en) * 1963-10-18 1967-07-20 Licentia Gmbh Winding for transformers and choke coils made up of disc coils with the same number of turns continuously connected to form double coils, between which there are radial oil ducts
DE1277433B (en) * 1964-07-08 1968-09-12 Licentia Gmbh Disc coil winding for high voltage transformers and choke coils

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909479C (en) * 1939-08-12 1954-04-22 Siemens Ag Winding arrangement for high voltage transformers
DE974694C (en) * 1940-06-27 1961-03-30 Siemens Ag Angled ring arrangement consisting of several prefabricated angled rings on top of one another for the end insulation of windings for transformers and inductors
DE894419C (en) * 1942-02-07 1953-10-26 Siemens Ag Isolation arrangement for high-voltage single-phase transformers
DE1091225B (en) * 1958-02-06 1960-10-20 Licentia Gmbh Isolation arrangement between windings of different voltages built up from disc coils for high voltage transformers u. like
DE1244945B (en) * 1963-10-18 1967-07-20 Licentia Gmbh Winding for transformers and choke coils made up of disc coils with the same number of turns continuously connected to form double coils, between which there are radial oil ducts
DE1277433B (en) * 1964-07-08 1968-09-12 Licentia Gmbh Disc coil winding for high voltage transformers and choke coils

Also Published As

Publication number Publication date
FR2568716B1 (en) 1987-12-18
EP0169922B1 (en) 1987-06-03
ATE27666T1 (en) 1987-06-15
DE3464102D1 (en) 1987-07-09
EP0169922A1 (en) 1986-02-05

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