EP2287864A1 - Traversée tubulaire - Google Patents

Traversée tubulaire Download PDF

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Publication number
EP2287864A1
EP2287864A1 EP09010635A EP09010635A EP2287864A1 EP 2287864 A1 EP2287864 A1 EP 2287864A1 EP 09010635 A EP09010635 A EP 09010635A EP 09010635 A EP09010635 A EP 09010635A EP 2287864 A1 EP2287864 A1 EP 2287864A1
Authority
EP
European Patent Office
Prior art keywords
tube
strips
insulating layer
flexible
around
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
EP09010635A
Other languages
German (de)
English (en)
Other versions
EP2287864B1 (fr
Inventor
Hartmut Brendel
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.)
ABB Technology AG
Original Assignee
ABB Technology 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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP09010635A priority Critical patent/EP2287864B1/fr
Priority to AT09010635T priority patent/ATE552599T1/de
Priority to ES09010635T priority patent/ES2383326T3/es
Priority to CN200910173066.XA priority patent/CN101996748B/zh
Priority to KR1020127004290A priority patent/KR20120049277A/ko
Priority to RU2012110217/07A priority patent/RU2516368C2/ru
Priority to BR112012003691-2A priority patent/BR112012003691B1/pt
Priority to PCT/EP2010/004907 priority patent/WO2011020575A1/fr
Publication of EP2287864A1 publication Critical patent/EP2287864A1/fr
Priority to US13/350,276 priority patent/US8334743B2/en
Application granted granted Critical
Publication of EP2287864B1 publication Critical patent/EP2287864B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/56—Insulating bodies
    • H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing

Definitions

  • the invention relates to a discharge tube for high-voltage transformers, comprising a shield tube made of an electrically conductive material, which extends hollow cylindrical around an at least partially curved path in the axial direction and with a hollow cylindrical molded electrical insulation layer, which at a first radial distance around the shield tube along the axial extent is arranged
  • high voltage transformers for power grids are arranged in a voltage level greater than or equal to 110kV for isolation reasons and for better dissipation of heat generated during operation mostly in a filled with oil transformer tank.
  • the external electrical connections are in this case arranged in the form of corresponding outlets on the transformer tank.
  • a discharge tube initially has an inner shielding tube made of conductive material, in the interior of which the connecting conductor is arranged.
  • the shielding tube is set to the same electrical potential as the conductor running in it, so that there is no potential difference between connecting conductor and shielding tube and breakdown or partial discharge within the shielding tube can not occur.
  • the shield tube in turn is either insulated from a thick single-layer insulating layer, or is surrounded by a plurality of hollow cylindrical arranged around this and radially adjacent barriers of an insulating material, wherein between the barriers each a space for the flow of transformer oil is provided.
  • the latter variant with isolation barriers has clear electrical advantages over a single-layer insulation layer.
  • either a modular component system is used for the barriers of diversion tubes, but in this case not more than one point of curvature of, for example, 90 ° is possible.
  • a discharge tube of the aforementioned type This is characterized in that the insulating layer of a strip-shaped insulating material is wrapped around at least partially flexible strips, each along the at least partially curved path adjacent to each other in a second radial distance around the shield tube are arranged
  • the basic idea of the invention is to wind the barriers or insulation layers of a band-like insulating material-preferably with the addition of an adhesive-directly around the shield tube, which for example has a diameter of 60 mm to 150 mm.
  • This allows easy custom fabrication of any forms of barriers and also avoids the problem of overlap locations between adjacent components of an insulating layer.
  • a winding process of an example 3mm thick insulation layer of several layers of insulation tape is - even if it is done manually - in the final result very quickly, because any preparatory work such as the production of a mold and subsequent manufacture of a molding account advantageous.
  • a winding process to a pipe shape also correspondingly easy to automate.
  • the strips In the bending region of the shielding tube, the strips must follow its curvature since, according to the invention, they each have the same radial distance from the shielding tube along their extent. Therefore, it is provided to design the strips flexible at least in the curvature areas, so to allow flexibility in all directions. For example, if a strip is disposed over a screen tube that is curved downwardly, the strip must be bendable along its axial extent in a vertical direction. In the case of a curvature running to the left or right, a bendability in the horizontal direction must be present.
  • a shielding tube is a hollow cylindrical enclosing insulation layer, or a barrier, with a radially underlying Cavity for the flooding with oil in a simple manner given also for very complex Schirmrohrgeometrien with a variety of curvature areas, the aforementioned disadvantages are avoided.
  • a plurality of radially spaced insulation layers are provided.
  • several isolation barriers are realized with underlying cavity for the oil to be flooded, whereby the distances to components with other electrical potentials can be reduced.
  • the at least partially flexible strips are designed as angled profile and are provided at least in the region of curvature with a plurality of slots transversely to their respective axial extent.
  • An angled profile for example, with at least two arranged at an angle of 90 ° to each other and interconnected flat bars has low material consumption on the one hand a high stability in all possible bending directions, which proves to be particularly advantageous for the straight sections.
  • a flexibility of the strip can be achieved in a simple manner by slitting such flat strips in a simple manner, so that ultimately a plurality of vertebral-like strip sections are pronounced, which are flexibly connected to one another via a non-slit core region of the strip.
  • the angled profile of a flexible strip is designed as an X, T, V and / or Y profile. If a bar is arranged directly on a cylindrical outer surface, for example, directly on the screen tube, then here in particular an X, an inverted Y or an inverted Y-profile offer, which then forms a particular with a respective two flat bars formed surface ensures good contact, for example, in an adhesive bond.
  • the shield tube is in its radially outer region of a base insulating layer, for example, a few mm Thickness wrapped.
  • the insulating material in question is - deviating from the above-mentioned insulating layers - preferably applied as a wet material, which after curing has a correspondingly high mechanical strength and good contact with the shield tube.
  • the radially innermost insulating layer is spaced from the screen tube or from its base insulating layer directly by the strips.
  • the radial thickness of the cavities with increasing radial distance from the shield tube, ie, for example, 10 mm thickness for the radially innermost cavity , 25mm for a second and possibly 40mm for a third, if required.
  • a thickness of about 10 mm is particularly easy to specify by a corresponding thickness of the respective strips, while thicknesses of 15 mm and higher would require strips with an inappropriately high cross-section, although this is of course also possible.
  • the discharge tube according to the invention arranged at a radial distance around the shield tube bars are at least one insulating layer along its axial extent with a plurality of axially spaced apart, arranged transversely to the curved path and an inner opening having support rings each at the radially outer periphery connected.
  • These support rings advantageously allow an increased thickness of the respective cavity - for example, 40mm - at a lower strip cross-section - for example, 15mm.
  • the use of one and the same type of strip is then possible with several radially spaced insulation layers or barriers.
  • These support rings are preferably to be pushed over the shield tube or over an already arranged insulation layer during production and distributed equidistantly in the axial direction, for example every 15 cm to 40 cm, wherein in the curved region a reduced distance of adjacent support rings makes sense.
  • the respective strips according to the invention are in fact flexible and should also be supported accordingly more.
  • At least one support ring encloses a radially inner insulation layer with its inner opening in a mechanical operative connection. This is useful for reasons of stability.
  • the cross section of at least one support ring next to the inner opening further recesses. These are in particular provided to allow a flow through the axially formed by the support rings axially adjacent cavity segments with oil.
  • the material of a support ring is to choose in each case electrically insulating. Pressspan has proven particularly suitable. This is both easy to work, has a high mechanical stability and is capable of being permanently immersed in oil. In an equally advantageous manner, the flexible strips of pressboard can be produced, of course, other materials may be suitable.
  • the band-shaped insulating material predominantly consists of a cellulose-based material, which can be wound particularly well. A more complicated use of a hardening wet material as in the basic insulation layer is not necessary.
  • the band-shaped insulating material is coated on at least one side with an adhesive layer. Thus, a slipping of the wound insulation tape is prevented in an advantageous manner.
  • Fig. 1 shows a first discharge pipe in a simplified sectional view 10.
  • a first shield tube 12 which is made for example of aluminum and has an outer diameter of 120mm
  • a wound first insulating layer 16 is arranged with a polygonal cross section. Both the first shielding tube 12 and the first insulating layer 16 are arranged in a hollow cylindrical manner around a curved path 14, which in this illustration should be regarded as emerging from the illustrated plane.
  • a plurality of first flexible strips 18 are arranged with a T-shaped cross-section.
  • the crossbar of the T-profile is particularly suitable to be wrapped by a band-shaped insulating material. There is a sharp edge avoided, which could damage the wound tape.
  • the concrete attachment of the strips 18 and the arrangement of other components in the space between the shield tube 12 and circular path 24 are left undecided in this illustration and will be described below.
  • the strips 18 are arranged in this cross-sectional representation equidistant star-shaped around the path 14, so that an approximately circular polygonal cross-section results, which results from the strips supported wound insulation layer
  • the insulating layer 16 has, for example, a thickness of a few mm, which results from a multi-layered and axially offset winding with the band-shaped insulating material.
  • the cross-sectional segments between the circular path 24 and the inner circumference of the insulating layer 16 each represent a cavities, which are flooded with a later installation of the discharge pipe in a transformer of oil.
  • Fig. 2 shows a second discharge pipe in a simplified plan view 30, partially in a sectional view.
  • a second tube 32 is arranged in a hollow cylindrical, which in particular also follows the curvature of the path 34. This is conductive and when installed in the transformer set to the same electrical potential as the inside - not shown - conductor. Thus, the electric field strength is reduced by the conductor set at voltage potential.
  • a third flexible strip 38 is connected in the upper region of the screen tube and along the curved path with the surface of the screen tube 32, for example by an adhesive connection.
  • the third strip 38 is provided with slots, which ensure flexibility in this area. Thus, it is possible that it follows the right bend of the screen tube 32.
  • a second 36 and a fourth 40 ledge are on the two side faces of the Umbrella tube 32 indicated, which are also slotted in the curved area and follow the respective bending direction.
  • a plurality of support rings 50 Arranged around this inner insulation layer 49 are a plurality of support rings 50 in an axially predominantly equidistant spacing, the inner opening circumference of which forms a mechanical operative connection with the outer circumference of the inner insulation layer 49.
  • Such an operative connection can be advantageously achieved by an axial rotational movement of a support ring 50 relative to the enclosed inner insulation layer 49, provided that both have a matched polygonal cross-section with an intermediate gap.
  • Analogous to the inner strip arrangement further strips, which are indicated by the reference numerals 42 and 44, are now arranged along the curved path 34 at a greater radial distance. These are supported by the support rings 50 and form an outer strip assembly.
  • a second insulation layer 48 is wound around the outer strip arrangement, which, of course, also extends along the entire screen tube 32 in a departure from the illustration.
  • Fig. 3 shows a third discharge pipe in a simplified sectional view.
  • a base insulating layer 64 made of a wet material, which has already hardened, is first attached to a third screen tube 62. This prevents direct contact with the conductive screen tube 62.
  • a base insulating layer 64 made of a wet material, which has already hardened, is first attached to a third screen tube 62.
  • the X profiles are formed wider and contiguous in their radially inner region so as to be able to establish good mechanical contact with the base insulation layer 64 of the shielding tube 62 on the one hand and also to simplify the mechanical positioning of the strips 50.
  • the X-profile also proves to be favorable, because thus also a larger bearing surface for the third insulating layer 70 is given.
  • the space thus spaced is intended to be flooded with transformer oil.
  • a second polygonal support ring 72 made of pressboard encloses with its inner circumferential cross section the polygonal third insulating layer 70 formed. Its inner periphery is provided with a plurality of second recesses 76, which initially ensure a flow-through with oil. Furthermore, these recesses 76 but give the support ring 72 and its polygonal internal structure. This is important to clamp the support ring 72 on the third insulating layer 70, wherein in this illustration the clamped state is shown. A rotation of the ring by about 18 ° to the left or right would solve this clamp connection and the ring is then particularly easy to move over the third insulating layer 70.
  • first recesses 74 are also provided along the outer circumference of the support ring 72, which likewise ensure an axial permeability of the support ring with transformer oil.
  • the peripheral areas, which are not recessed, are covered by a respective transverse bar of a respective T-shaped bar 68, which is clamped with its longitudinal bar in a corresponding slot on the outer circumference of the support ring 72.
  • Fig. 4 shows a ninth flexible strip with T-profile in a three-dimensional view 80 and in a cross-sectional view 81.
  • the flexible, slotted region is indicated along the arrow 82 and the slots with the reference numeral 84.
  • the cross section such a bar is for example 20mm x 15mm, with a slot being 2mm wide, for example.
  • the slotted areas 88 and the core area 86 are shown.
  • Fig. 5 shows a tenth flexible strip with V-profile in a three-dimensional view 100 and in a cross-sectional view 101.
  • the flexible, slotted area is indicated along the arrow 102 and the slots with the reference numeral 104.
  • the cross-sectional drawing 101 are the slotted areas 106 and Core area 108 shown.
  • Fig. 6 an eleventh X-profile flexible strip in a three-dimensional view 120 and in a cross-sectional view 121.
  • the flexible slotted region is indicated along the arrow 122 and the staggered slots are designated by the reference numeral 124.
  • Fig. 7 shows the support ring 72 from the Fig. 3 in a three-dimensional detail representation 130.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Bodies (AREA)
  • Insulating Of Coils (AREA)
  • Thermal Insulation (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Amplifiers (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Housings And Mounting Of Transformers (AREA)
EP09010635A 2009-08-19 2009-08-19 Traversée tubulaire Active EP2287864B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP09010635A EP2287864B1 (fr) 2009-08-19 2009-08-19 Traversée tubulaire
AT09010635T ATE552599T1 (de) 2009-08-19 2009-08-19 Ausleitungsrohr
ES09010635T ES2383326T3 (es) 2009-08-19 2009-08-19 Conducto de salida
CN200910173066.XA CN101996748B (zh) 2009-08-19 2009-09-08 引线管
KR1020127004290A KR20120049277A (ko) 2009-08-19 2010-08-11 리드아웃 튜브
RU2012110217/07A RU2516368C2 (ru) 2009-08-19 2010-08-11 Труба для прокладки выводов
BR112012003691-2A BR112012003691B1 (pt) 2009-08-19 2010-08-11 Terminal de saída para transformadores de alta tensão e método de produção de um terminal de saída curvo seccionalmente
PCT/EP2010/004907 WO2011020575A1 (fr) 2009-08-19 2010-08-11 Conduit de sortie
US13/350,276 US8334743B2 (en) 2009-08-19 2012-01-13 Lead-out tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09010635A EP2287864B1 (fr) 2009-08-19 2009-08-19 Traversée tubulaire

Publications (2)

Publication Number Publication Date
EP2287864A1 true EP2287864A1 (fr) 2011-02-23
EP2287864B1 EP2287864B1 (fr) 2012-04-04

Family

ID=41510765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09010635A Active EP2287864B1 (fr) 2009-08-19 2009-08-19 Traversée tubulaire

Country Status (9)

Country Link
US (1) US8334743B2 (fr)
EP (1) EP2287864B1 (fr)
KR (1) KR20120049277A (fr)
CN (1) CN101996748B (fr)
AT (1) ATE552599T1 (fr)
BR (1) BR112012003691B1 (fr)
ES (1) ES2383326T3 (fr)
RU (1) RU2516368C2 (fr)
WO (1) WO2011020575A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2487696A1 (fr) * 2012-03-28 2012-08-15 ABB Technology AG Électrode écran et bac à huile
DE202012007302U1 (de) 2012-07-28 2012-08-21 Abb Ag Ausleitungsrohr
CN104700996A (zh) * 2013-12-09 2015-06-10 特变电工股份有限公司 一种变压器引线屏蔽装置以及超高压或特高压变压器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014098272A1 (fr) * 2012-12-17 2014-06-26 Abb Technology Ltd Bobine à basse tension de transformateur et transformateur
CN109742625B (zh) * 2019-03-08 2023-06-06 哈尔滨理工大学 一种原油电脱水变压器用高电压柔性连接装置及其安装方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH659907A5 (en) * 1983-04-22 1987-02-27 Bbc Brown Boveri & Cie Insulator and method for its production
CH695968A5 (de) * 2001-12-12 2006-10-31 Wicor Holding Ag Kopfelektrode einer Ausleitung für Leistungstransformatoren sowie Verfahren zu deren Herstellung.

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US3939449A (en) * 1975-01-15 1976-02-17 Westinghouse Electric Corporation Insulated transformer windings
DE2642216C2 (de) * 1976-09-20 1982-04-15 Messwandler-Bau Gmbh, 8600 Bamberg Spannungstransformator mit stabförmigem Eisenkern zur Verwendung als Ankopplungstransformator für Netzwerke mit überlagerter Tonfrequenzspannung, insbesondere Rundsteueranlagen
SU1092579A1 (ru) * 1982-01-18 1984-05-15 Производственное Объединение "Уралэлектротяжмаш" Им.В.И.Ленина Обмотка индукционного устройства
US4833278A (en) * 1988-10-31 1989-05-23 Hyrdro-Quebec Insulator housing made from polymeric materials and having spirally arranged inner sheds and water sheds
CN2395372Y (zh) * 1999-11-23 2000-09-06 锺作鸿 高压绝缘防护套
RU2198444C2 (ru) * 2000-04-14 2003-02-10 Аржанников Борис Алексеевич Трансформатор
JP3842056B2 (ja) * 2001-03-06 2006-11-08 三菱電機株式会社 三相一括形変流器
US7692524B2 (en) * 2006-07-10 2010-04-06 Rockwell Automation Technologies, Inc. Methods and apparatus for flux dispersal in link inductor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH659907A5 (en) * 1983-04-22 1987-02-27 Bbc Brown Boveri & Cie Insulator and method for its production
CH695968A5 (de) * 2001-12-12 2006-10-31 Wicor Holding Ag Kopfelektrode einer Ausleitung für Leistungstransformatoren sowie Verfahren zu deren Herstellung.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2487696A1 (fr) * 2012-03-28 2012-08-15 ABB Technology AG Électrode écran et bac à huile
DE202012007302U1 (de) 2012-07-28 2012-08-21 Abb Ag Ausleitungsrohr
CN104700996A (zh) * 2013-12-09 2015-06-10 特变电工股份有限公司 一种变压器引线屏蔽装置以及超高压或特高压变压器
CN104700996B (zh) * 2013-12-09 2018-05-15 特变电工股份有限公司 一种变压器引线屏蔽装置以及超高压或特高压变压器

Also Published As

Publication number Publication date
RU2012110217A (ru) 2013-09-27
CN101996748B (zh) 2014-09-03
EP2287864B1 (fr) 2012-04-04
ATE552599T1 (de) 2012-04-15
WO2011020575A1 (fr) 2011-02-24
US20120169450A1 (en) 2012-07-05
ES2383326T3 (es) 2012-06-20
US8334743B2 (en) 2012-12-18
KR20120049277A (ko) 2012-05-16
BR112012003691B1 (pt) 2021-04-06
RU2516368C2 (ru) 2014-05-20
CN101996748A (zh) 2011-03-30
BR112012003691A2 (pt) 2016-03-29

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