EP1779486A1 - Isolateur et systeme de support isolant pour conduits isolés de bus de phase - Google Patents

Isolateur et systeme de support isolant pour conduits isolés de bus de phase

Info

Publication number
EP1779486A1
EP1779486A1 EP04770738A EP04770738A EP1779486A1 EP 1779486 A1 EP1779486 A1 EP 1779486A1 EP 04770738 A EP04770738 A EP 04770738A EP 04770738 A EP04770738 A EP 04770738A EP 1779486 A1 EP1779486 A1 EP 1779486A1
Authority
EP
European Patent Office
Prior art keywords
insulator
insulating support
flange
support system
electrical conductors
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.)
Withdrawn
Application number
EP04770738A
Other languages
German (de)
English (en)
Inventor
Marcello Brulli
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.)
Alfa Standard SpA
Original Assignee
Alfa Standard SpA
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 Alfa Standard SpA filed Critical Alfa Standard SpA
Publication of EP1779486A1 publication Critical patent/EP1779486A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/06—Totally-enclosed installations, e.g. in metal casings
    • H02G5/066—Devices for maintaining distance between conductor and enclosure

Definitions

  • the present invention relates to an insulating support system for electr ⁇ e-airjconductors particularly
  • the present invention relates to an insulating system designed and intended to be mounted on bus ducts in groups of three or more systems per conductor supporting point, radially, with an angle which may be selected according to requirements.
  • the insulating support system proposed overcomes the disadvantages of the insulating systems used until now, which employ bolts or screws, having expansion coefficients greater than those of the material used to make the insulator (porcelain or resin) , avoiding the consequent possibilities of breakage (even partial) of the insulator and loss of insulation.
  • the system disclosed does not use inserts of any type, therefore, there are no stresses inside the insulator due to the different expansions.
  • the present invention is applied in the sector of systems for conducting electrical energy, in particular insulating systems distributed along the bus ducts with any electrical voltage, or supporting points for high voltage electrical lines.
  • the insulating systems used until now are characterised by the use of insulators made of porcelain or resin, to which the electrical conductors are fixed, using bolts, screws, or with bus support systems also anchored to the insulator by bolts, screws, etc.
  • bus duct is subject to repeated temperature variations, and considering that the elements used to secure the conductor reach practically the same temperature as the conductor, both are subjected to variations in their dimensions due to temperature variations.
  • the metal inserts applied to the insulator in the form of bolts, screws, bus supports, etc., have expansion coefficients greater than those of the material used to make the insulator, normally porcelain or resin, and as a result the insulator may break (even partially) and cause insulation to be lost.
  • the changes in the dimensions (volume) of the metal inserts in the insulator are greater than the changes in the dimensions of the insulator, which consequently does not withstand the internal stresses due to these expansions, and breaks.
  • the present invention proposes to provide an insulating system for/' ' ⁇ so ⁇ ate ⁇ ) phase bus ducts which can overcome or at least reduce the above-mentioned disadvantages.
  • the invention also proposes to provide an insulating system for bus ducts which is easy to produce so that it is economically advantageous.
  • the quality of the element of the insulating system disclosed is superior, since the mounting and consequently the entire system, is very simple, not requiring special tools, and at the same time guarantees perfect mechanical protection for the insulator and full compliance with regulations for the prevention of environmental pollution.
  • Another aim which is not unimportant is for the insulating system disclosed to guarantee a seal against dust and water and the weather in general.
  • the support system proposed overcomes these disadvantages, since it does not use inserts of any type, therefore, there are no stresses inside the insulator caused by different expansions.
  • the system- uses a top damper made of elastic material, for example neoprene rubber, the upper part of which, facing the conductor, supports a metal runner, for example made of stainless steel. The runner allows the conductor it supports to slide freely, avoiding significant stresses on the insulator, which could cause the insulator to break.
  • the runner is installed, by pressing it into place, in the upper part of the insulator.
  • This element is also designed to absorb vibrations from the conductor, as well as its volumetric, expansions.
  • the system also has an insulator, made of porcelain or resin, which guarantees electrical insulation and an aluminium or aluminium alloy flange, welded to the enclosure of the bus duct where the insulator will be installed.
  • An intermediate seal is used, made of an elastic material, for example neoprene rubber, designed to prevent contact between the metal flange and the insulator and therefore friction between the two elements and consequently possible breakage of the weaker element, and a base seal, made of an elastic material, for example neoprene rubber, designed to prevent contact between the insulator and the cover, and to eliminate the aboye- mentioned harmful effects.
  • an elastic material for example neoprene rubber
  • the cover is made of non-magnetic metal, for example aluminium or aluminium alloy, and is secured to the flange by metal bolts/screws, applying pressure to the insulator so that the latter adheres perfectly to the flange, guaranteeing a mechanical connection between the above- mentioned elements, as well as the system mechanical seal, supporting the weight of the conductor, and preventing any foreign bodies from entering the bus duct.
  • non-magnetic metal for example aluminium or aluminium alloy
  • the insulating system described is designed to be mounted on said bus ducts in groups of three or more systems per conductor supporting point, radially, with an angle which may be selected according to requirements.
  • Figure 1 is a schematic cross-section of the insulator made in accordance with the present invention as a whole, including all of the elements used;
  • Figure 2 is a schematic view of the assembled insulator;
  • Figure 3 is a schematic view of the insulator arranged with other insulators in the duct enclosure.
  • the insulator disclosed requires the set up and preparation of a top damper 10, made of elastic material, for example rubber or neoprene.
  • the damper 10 has a configuration suitable for encompassing the upper end of the insulator 11 and its upper part, facing the conductor 12, supports a metal runner 13, for example made of stainless steel.
  • the runner 13 on which the conductor 12 rests allows the conductor which it supports to slide freely, avoiding significant stresses on the insulator 11, which could cause the insulator to break.
  • the runner 13, inserted in the top damper 10, is installed, by pressing it into, place, in the upper part of the insulator 11.
  • the runner 13, which remains inserted as indicated in the top damper 10, is also designed to absorb, together with the damper, the vibrations of the conductor 12, as well as conductor volumetric expansions.
  • the insulator 11 is made of porcelain or resin, or a material which guarantees electrical insulation.
  • the insulator 11 is installed on a flange 14 made of aluminium or aluminium alloy, which in turn remains welded in a respective seat made in the enclosure 15 of the bus duct where the insulator is installed.
  • an intermediate seal 17 is inserted, made of an elastic material, for example neoprene rubber and, together with the base of the insulator, resting on a corresponding lip
  • the intermediate seal is.designed to prevent contact between the metal flange 14 and the insulator 11, therefore, to prevent friction between the two elements and consequent possible breakage of the weaker element.
  • the insulator remains in the flange 14, with its base 16 resting against the lip 18 of the flange and secured there by a cover 19 with a base seal 20 made of an elastic material, such as neoprene rubber, inserted between the insulator and cover, to prevent contact between the insulator 11 and the cover 19, eliminating the above- mentioned harmful effects.
  • the cover 19 is made of non-magnetic metal, for example aluminium or aluminium alloy, and is secured to the flange 14 by bolts/screws 21 made of any metal, to apply pressure to the insulator 11 so that it adheres perfectly to the flange 14, resting on its inner lip 18.
  • the flange 14 has a profile which matches that of the base of the insulator 11, allowing the ins ⁇ lator to snap into place, so that there are no screws passing through the insulator, which created the above-mentioned problems.
  • the screws 21 used to close the cover 19 on the flange 14 do not interfere with the insulator 11 in any ⁇ way.
  • the insulating system has an important advantage which must not be overlooked from the electrical viewpoint, since it guarantees a seal against dust and water and weather.
  • This system for securing the insulator guarantees both a solid mechanical connection between the above- mentioned elements, and the system mechanical seal, allowing it to support the weight of the conductor, as well as preventing any foreign bodies from entering the bus duct.
  • this system solves the problems encountered in conventional means of connection between the insulator and the conductor, since the system is completely without conventional metal inserts applied to the insulator, in the form of bolts, screws, bus supports, etc. which, having expansion coefficients greater than those of the material used to make the insulator, could cause the insulator to break and the consequent loss of insulation.
  • the support system proposed overcomes these disadvantages, since it does not use inserts of any type, thus avoiding any difference in expansion and so the main cause of breakage.
  • the insulating system disclosed is designed to be mounted on bus ducts in groups of three or more systems per conductor supporting point, generally arranged radially, with an angle which may be selected according to requirements. - g -
  • the system disclosed guarantees perfect protection for the insulator, guaranteeing an excellent seal for the prevention of environmental pollution and mechanical seal.

Landscapes

  • Insulators (AREA)
  • Installation Of Bus-Bars (AREA)

Abstract

Système de support isolant pour conducteurs électriques (12) particulièrement approprié pour l'installation dans des conduits de bus de phase isolée pour transporter l'énergie électrique et inséré dans une enveloppe de protection (15), dans lequel le support est inséré dans une bride (14) disposée radialement avec d'autres supports correspondants dans l'enveloppe de protection (15) pour maintenir le conducteur (12) dans une position centrale et équidistante de l'enveloppe de protection (15), et dans lequel le support isolant comprend au mois un isolateur (11) fait de porcelaine ou de résine sur lequel est appliqué le conducteur (12). L'extrémité de l'isolateur (11) est encadrée par au moins un amortisseur (10) avec une configuration appropriée pour supporter sur son côté détourné de l'isolateur (11), au moins un cavalier (13) sur lequel le conducteur (12) reste précontraint au repos. L'isolateur (11) reste donc avec sa base (16) contre la lèvre interne (18) de bride (14) et est fixé par un couvercle (19), ayant ainsi une étanchéité de base (20) entre l'isolateur et le couvercle.
EP04770738A 2004-08-04 2004-08-04 Isolateur et systeme de support isolant pour conduits isolés de bus de phase Withdrawn EP1779486A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2004/000436 WO2006013584A1 (fr) 2004-08-04 2004-08-04 Isolateur et systeme de support isolant pour conduits isolés de bus de phase

Publications (1)

Publication Number Publication Date
EP1779486A1 true EP1779486A1 (fr) 2007-05-02

Family

ID=34958529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04770738A Withdrawn EP1779486A1 (fr) 2004-08-04 2004-08-04 Isolateur et systeme de support isolant pour conduits isolés de bus de phase

Country Status (3)

Country Link
EP (1) EP1779486A1 (fr)
CN (1) CN101019289A (fr)
WO (1) WO2006013584A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013210773A1 (de) * 2013-06-10 2014-12-11 Siemens Aktiengesellschaft Stromschienensystem mit Halterung
FR3024295B1 (fr) * 2014-07-28 2016-08-26 Alstom Technology Ltd Appareillage electrique comportant des moyens ameliores de fixation d'un support isolant
CH714403A1 (de) * 2017-12-04 2019-06-14 Axpo Power AG Leiterseilüberbrückungsvorrichtung und Verwendung in einem Umrüst- oder Herstellungsverfahren für Freileitungsmasten.
CN110576288B (zh) * 2019-10-31 2024-04-26 山东达驰阿尔发电气有限公司 一种离相封闭母线绝缘子支座定位焊接的工装胎具及其使用方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1264074A (fr) * 1960-05-06 1961-06-19 Expl S Ind Soc Gen Perfectionnement aux barres conductrices sous gaines continues
US4296273A (en) * 1980-03-03 1981-10-20 Przedsiebiorstwo Montazu Elektrycznego "Elektrobudowa" Support assembly for high current bus bars

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006013584A1 *

Also Published As

Publication number Publication date
CN101019289A (zh) 2007-08-15
WO2006013584A1 (fr) 2006-02-09

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