EP0169922A1 - Insulating member for high-voltage devices - Google Patents

Insulating member for high-voltage devices Download PDF

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Publication number
EP0169922A1
EP0169922A1 EP84109060A EP84109060A EP0169922A1 EP 0169922 A1 EP0169922 A1 EP 0169922A1 EP 84109060 A EP84109060 A EP 84109060A EP 84109060 A EP84109060 A EP 84109060A EP 0169922 A1 EP0169922 A1 EP 0169922A1
Authority
EP
European Patent Office
Prior art keywords
insulating
ring
angle
cylinder
insulating cylinder
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
EP84109060A
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German (de)
French (fr)
Other versions
EP0169922B1 (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
Priority to DE8484109060T priority Critical patent/DE3464102D1/en
Priority to AT84109060T priority patent/ATE27666T1/en
Priority to EP84109060A priority patent/EP0169922B1/en
Priority to FR8511625A priority patent/FR2568716B1/en
Publication of EP0169922A1 publication Critical patent/EP0169922A1/en
Application granted granted Critical
Publication of EP0169922B1 publication Critical patent/EP0169922B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

Definitions

  • the invention relates to an insulating element according to the preamble of claim 1.
  • Insulating elements of the type required in the preamble of claim 1 are used, for example, to isolate transformer or choke coil ends of high voltage.
  • 1 shows a partial section through an oil-filled transformer, the undervoltage winding is designated by 1 and the high-voltage winding is designated by 2.
  • insulating elements 3 to 9 are arranged in the oil-filled space between the windings 1 and 2.
  • the similarly designed insulating elements 4 to 7 each consist of an insulating cylinder 10 and an angle ring 11 attached thereto.
  • Such an angle ring 11 is illustrated in detail in FIG. It consists of a cylindrical part 11a and an outwardly facing flange 11b.
  • Figure 1 shows a section through the right part of the angle ring 11 (in reverse ter position, ie with the cylindrical part 11a) pointing downwards.
  • the insulating elements 5, 6 and 7 are constructed in the same way as the insulating element 4; the only difference is the dimensioning of the angle rings 11, in particular the radius of curvature between the cylindrical part 11a and the flange 11b.
  • the insulating element 3 consists of an insulating cylinder 10 and an insulating ring designed as a cap ring 12, which is illustrated schematically in FIG.
  • the cap ring 12 includes a cylindrical portion 12a and an inward flange 12b.
  • the insulating cylinders 10 of the insulating elements 3 to 7 are sharpened at their end facing the angle rings 11 or the cap ring 12 by reducing their wall thickness.
  • the cylindrical parts 11a of the angle rings 11 and 12a of the cap ring 12 are sharpened in the overlap region by reducing the wall thickness.
  • a disadvantage of this known embodiment is that the sharp edge of the two sharpening points (on the insulating cylinder 10 and on the angle ring 11 or cap ring 12) is at high risk of tearing is. This results in difficulties especially during transport and assembly. The manufacture of the sharpened parts is also relatively expensive.
  • the invention is therefore based on the object, while avoiding the disadvantages described, to form an insulating element of the type required in the preamble of claim 1 in such a way that, with the same electrical strength, there is a higher mechanical strength and the manufacture, transport and assembly are simplified.
  • FIG. 1 An embodiment of the invention is illustrated in Fig.4.
  • the same reference numerals as in FIG. 1 are used for the same parts.
  • the insulating cylinders 10 of the insulating elements 3 to 7 are designed in the same way as in the known embodiment according to FIG. sharpened in the overlap area by reducing their wall thickness.
  • the angle rings 11 'and the cap ring 12' are designed differently from the known embodiment according to FIG. They are conical in the overlap area 11'a or 12'a, but with a constant wall thickness, the cone angle corresponding to the sharpening angle of the insulating cylinder 10. This results in a thickening of material 13 at the end of the angle ring 11 'or the cap ring 12' facing the insulating cylinder 10, which, however, lies in an approximately homogeneous part of the field (to illustrate the field formation, two equipotential surfaces 14, 15 are shown in FIG. 4 Field shown schematically).
  • the overlap area 11'a or 12'a is dimensioned accordingly.
  • the angle rings 11 'and cap rings 12' do not need to be provided with the sharpenings previously required. This results in a much better mechanical strength with the same electrical strength. At the same time, this simplifies transportation and assembly.
  • the angle rings 11 'and cap rings 12' can be attached in the most favorable position in terms of field, the oil channel between the windings 1 and 2 which is necessary for cooling being maintained. Material thickenings 13 are only present in the relatively uncritical area of the homogeneous field.

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

Die Erfindung betrifft ein Isolierelement entsprechend dem Oberbegriff des Anspruches 1.The invention relates to an insulating element according to the preamble of claim 1.

Isolierelemente der im Oberbegriff des Anspruches 1 vorausgesetzten Art finden beispielsweise zur Isolation von Transformator- oder Drosselspulenenden hoher Spannung Verwendung.Insulating elements of the type required in the preamble of claim 1 are used, for example, to isolate transformer or choke coil ends of high voltage.

Die bisher bekannte Ausführung eines solchen Isolierelementes sei zunächst anhand von Fig.1 erläutert.The previously known design of such an insulating element is first explained with reference to FIG. 1.

Fig.1 zeigt einen Teilschnitt durch einen ölgefüllten Transformator, dessen Unterspannungswicklung mit 1 und dessen Oberspannungswicklung mit 2 bezeichnet ist.1 shows a partial section through an oil-filled transformer, the undervoltage winding is designated by 1 and the high-voltage winding is designated by 2.

In dem ölgefüllten Raum zwischen den Wicklungen 1 und 2 sind bei dem dargestellten Ausführungsbeispiel Isolierelemente 3 bis 9 angeordnet.In the illustrated embodiment, insulating elements 3 to 9 are arranged in the oil-filled space between the windings 1 and 2.

Die gleichartig ausgebildeten Isolierelemente 4 bis 7 bestehen jeweils aus einem Isolierzylinder 10 und einem hieran angesetzten Winkelring 11. Ein solcher Winkelring 11 ist in Fig.2 im einzelnen veranschaulicht. Er besteht aus einem zylindrischen Teil 11a und einem nach außen weisenden Flansch 11b. Zum Verständnis des Zusammenhanges zwischen den Fig.1 und 2 sei angemerkt, daß Fig.1 einen Schnitt durch den rechten Teil des Winkelringes 11 (in umgekehrter Lage, d.h. mit nach unten weisendem zylindrischen Teil 11a) zeigt. Die Isolierelemente 5, 6 und 7 sind gleichartig wie das Isolierelement 4 ausgebildet; unterschiedlich ist dabei lediglich die Dimensionierung der Winkelringe 11, insbesondere des Krümmungsradius zwischen dem zylindrischen Teil 11a und dem Flansch 11b.The similarly designed insulating elements 4 to 7 each consist of an insulating cylinder 10 and an angle ring 11 attached thereto. Such an angle ring 11 is illustrated in detail in FIG. It consists of a cylindrical part 11a and an outwardly facing flange 11b. To understand the relationship between Figures 1 and 2, it should be noted that Figure 1 shows a section through the right part of the angle ring 11 (in reverse ter position, ie with the cylindrical part 11a) pointing downwards. The insulating elements 5, 6 and 7 are constructed in the same way as the insulating element 4; the only difference is the dimensioning of the angle rings 11, in particular the radius of curvature between the cylindrical part 11a and the flange 11b.

Das Isolierelement 3 besteht aus einem Isolierzylinder 10 und einem als Kappenring 12 ausgebildeten Isolierring, der in Fig.3 schematisch veranschaulicht ist. Der Kappenring 12 enthält einen zylindrischen Teil 12a und einen nach innen weisenden Flansch 12b.The insulating element 3 consists of an insulating cylinder 10 and an insulating ring designed as a cap ring 12, which is illustrated schematically in FIG. The cap ring 12 includes a cylindrical portion 12a and an inward flange 12b.

Die Isölierzylinder 10 der Isolierelemente 3 bis 7 sind an ihrem den Winkelringen 11 bzw. dem Kappenring 12 zugewandten Ende durch Verringerung ihrer Wandstärke angeschärft. In gleicher Weise sind bei der in Fig.1 dargestellten bekannten Ausführung die zylindrischen Teile 11a der Winkelringe 11 bzw. 12a des Kappenringes 12-im Überlappungsbereich durch Verringerung der Wandstärke angeschärft.The insulating cylinders 10 of the insulating elements 3 to 7 are sharpened at their end facing the angle rings 11 or the cap ring 12 by reducing their wall thickness. In the same way, in the known embodiment shown in FIG. 1, the cylindrical parts 11a of the angle rings 11 and 12a of the cap ring 12 are sharpened in the overlap region by reducing the wall thickness.

Dadurch ergibt sich im Überlappungsbereich keine Materialverdickung.As a result, there is no material thickening in the overlap area.

Nachteilig ist bei dieser bekannten Ausführung allerdings, daß die spitze Kante der beiden Schärfstellen (am Isolierzylinder 10 und am Winkelring 11 bzw. Kappenring 12) in hohem Maße einreißgefährdet ist. Dadurch ergeben sich vor allem beim Transport und bei der Montage Schwierigkeiten. Die Herstellung der angeschärften Teile ist außerdem verhältnismäßig aufwendig.A disadvantage of this known embodiment, however, is that the sharp edge of the two sharpening points (on the insulating cylinder 10 and on the angle ring 11 or cap ring 12) is at high risk of tearing is. This results in difficulties especially during transport and assembly. The manufacture of the sharpened parts is also relatively expensive.

Der Erfindung liegt daher die Aufgabe zugrunde, unter Vermeidung der geschilderten Nachteile ein Isolierelement der im Oberbegriff des Anspruches 1 vorausgesetzten Art so auszubilden, daß sich bei gleicher elektrischer Festigkeit eine höhere mechanische Festigkeit ergibt und die Herstellung, der Transport sowie die Montage vereinfacht werden.The invention is therefore based on the object, while avoiding the disadvantages described, to form an insulating element of the type required in the preamble of claim 1 in such a way that, with the same electrical strength, there is a higher mechanical strength and the manufacture, transport and assembly are simplified.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.This object is achieved by the characterizing features of claim 1.

Ein Ausführungsbeispiel der Erfindung ist in Fig.4 veranschaulicht. Für gleiche Teile sind dabei dieselben Bezugszeichen wie in Fig.1 verwendet.An embodiment of the invention is illustrated in Fig.4. The same reference numerals as in FIG. 1 are used for the same parts.

Die Isolierzylinder 10 der Isolierelemente 3 bis 7 sind in gleicher Weise wie bei der bekannten Ausführung gemäß Fig.1 ausgebildet, d.h. im Oberlappungsbereich durch Verringerung ihrer Wandstärke angeschärft.The insulating cylinders 10 of the insulating elements 3 to 7 are designed in the same way as in the known embodiment according to FIG. sharpened in the overlap area by reducing their wall thickness.

Die Winkelringe 11' und der Kappenring 12' sind dagegen abweichend von der bekannten Ausführung gemäß Fig.1 gestaltet. Sie sind im überlappungsbereich 11'a bzw. 12'a konisch, jedoch mit gleichbleibender Wandstärke, ausgebildet, wobei der Konuswinkel dem Anschärfungswinkel des Isolierzylinders 10 entspricht. Dadurch ergibt sich an dem dem Isolierzylinder 10 zugewandten Ende des Winkelringes 11' bzw. des Kappenringes 12' eine Materialverdickung 13, die jedoch in einem annähernd homogenen Teil des Feldes liegt (zur Verdeutlichung der Feldausbildung sind in Fig.4 zwei Äquipotentialflächen 14, 15 des Feldes schematisch dargestellt). Zu diesem Zweck wird der überlappungsbereich 11'a bzw. 12'a entsprechend dimensioniert.In contrast, the angle rings 11 'and the cap ring 12' are designed differently from the known embodiment according to FIG. They are conical in the overlap area 11'a or 12'a, but with a constant wall thickness, the cone angle corresponding to the sharpening angle of the insulating cylinder 10. This results in a thickening of material 13 at the end of the angle ring 11 'or the cap ring 12' facing the insulating cylinder 10, which, however, lies in an approximately homogeneous part of the field (to illustrate the field formation, two equipotential surfaces 14, 15 are shown in FIG. 4 Field shown schematically). For this purpose, the overlap area 11'a or 12'a is dimensioned accordingly.

Durch die erfindungsgemäße Lösung brauchen die Winkelringe 11' und Kappenringe 12' nicht mit den bisher notwendigen Anschärfungen versehen zu werden. Dadurch ergibt sich bei gleicher elektrischer Festigkeit eine wesentlich bessere mechanische Festigkeit. Zugleich wird hierdurch der Transport und die Montage vereinfacht.Due to the solution according to the invention, the angle rings 11 'and cap rings 12' do not need to be provided with the sharpenings previously required. This results in a much better mechanical strength with the same electrical strength. At the same time, this simplifies transportation and assembly.

Bei der in Fig.4 schematisch veranschaulichten erfindungsgemäßen Lösung können die Winkelringe 11' und Kappenringe 12' in feldmäßig günstigster Position angebracht werden, wobei der zur Kühlung notwendige ölkanal zwischen den Wicklungen 1 und 2 eingehalten wird. Materialverdickungen 13 liegen dabei nur in dem relativ unkritischen Bereich des homogenen Feldes vor.In the solution according to the invention schematically illustrated in FIG. 4, the angle rings 11 'and cap rings 12' can be attached in the most favorable position in terms of field, the oil channel between the windings 1 and 2 which is necessary for cooling being maintained. Material thickenings 13 are only present in the relatively uncritical area of the homogeneous field.

Claims (3)

1. Isolierelement für Hochspannungsgeräte, bestehend aus einem Isolierzylinder (10) und einem an den Isolierzylinder (10) mit Überlappung angesetzten Isolierring (11', 12'), wobei der Isolierzylinder (10) durch Verringerung seiner Wandstärke im überlappungsbereich angeschärft ist,
gekennzeichnet durch folgende Merkmale: a) der Isolierring (11', 12') ist zumindest im Überlappungsbereich (11'a, 12'a) konisch, jedoch mit gleichbleibender Wandstärke, ausgebildet, wobei der Konuswinkel des Isolierringes (11', 12') dem Anschärfungswinkel des Isolierzylinders (10) entspricht; b) der überlappungsbereich (11'a, 12'a) ist derart dimensioniert, daß das dem Isolierzylinder (10) zugewandte Ende des Isolierringes (11', 12') in einem annähernd homogenen Teil des Feldes liegt. 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) with overlap, the insulating cylinder (10) being sharpened by reducing its wall thickness in the overlapping area,
characterized by the following features: a) the insulating ring (11 ', 12') is conical at least in the overlap region (11'a, 12'a), but with a constant wall thickness, the cone angle of the insulating ring (11 ', 12') being the sharpening angle of the insulating cylinder ( 10) corresponds to; b) the overlap area (11'a, 12'a) is dimensioned such that the end of the insulating ring (11 ', 12') facing the insulating cylinder (10) lies in an approximately homogeneous part of the field. 2. Isolierelement nach Anspruch 1, dadurch gekennzeichnet, daß der Isolierring durch einen Winkelring (11') mit nach außen weisendem Flansch gebildet wird.2. Insulating element according to claim 1, characterized in that the insulating ring is formed by an angle ring (11 ') with an outwardly facing flange. 3. Isolierelement nach Anspruch 1, dadurch gekennzeichnet, daß der Isolierring durch einen Kappenring (12') mit nach innen weisendem Flansch gebildet wird.3. Insulating element according to claim 1, characterized in that the insulating ring is formed by a cap ring (12 ') with an inwardly facing flange.
EP84109060A 1984-07-31 1984-07-31 Insulating member for high-voltage devices Expired EP0169922B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8484109060T DE3464102D1 (en) 1984-07-31 1984-07-31 Insulating member for high-voltage devices
AT84109060T ATE27666T1 (en) 1984-07-31 1984-07-31 INSULATION ELEMENT FOR HIGH VOLTAGE EQUIPMENT.
EP84109060A EP0169922B1 (en) 1984-07-31 1984-07-31 Insulating member for high-voltage devices
FR8511625A FR2568716B1 (en) 1984-07-31 1985-07-30 INSULATING ELEMENT FOR HIGH VOLTAGE DEVICES

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
EP0169922A1 true EP0169922A1 (en) 1986-02-05
EP0169922B1 EP0169922B1 (en) 1987-06-03

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Family Applications (1)

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

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (2)

* 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
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
FR2568716B1 (en) 1987-12-18
EP0169922B1 (en) 1987-06-03
FR2568716A1 (en) 1986-02-07
DE3464102D1 (en) 1987-07-09
ATE27666T1 (en) 1987-06-15

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