EP0615259B1 - Procédé de fabrication d'une liaison en mastic entre un isolateur et une armature et ensemble isolateur - Google Patents

Procédé de fabrication d'une liaison en mastic entre un isolateur et une armature et ensemble isolateur Download PDF

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Publication number
EP0615259B1
EP0615259B1 EP93104011A EP93104011A EP0615259B1 EP 0615259 B1 EP0615259 B1 EP 0615259B1 EP 93104011 A EP93104011 A EP 93104011A EP 93104011 A EP93104011 A EP 93104011A EP 0615259 B1 EP0615259 B1 EP 0615259B1
Authority
EP
European Patent Office
Prior art keywords
cement
insulator
gap
compound
armature
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.)
Expired - Lifetime
Application number
EP93104011A
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German (de)
English (en)
Other versions
EP0615259A1 (fr
Inventor
Johannes Blatter
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.)
General Electric Switzerland GmbH
Original Assignee
GEC Alsthom T&D 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 GEC Alsthom T&D AG filed Critical GEC Alsthom T&D AG
Priority to DE59302607T priority Critical patent/DE59302607D1/de
Priority to EP93104011A priority patent/EP0615259B1/fr
Priority to AT93104011T priority patent/ATE138220T1/de
Publication of EP0615259A1 publication Critical patent/EP0615259A1/fr
Application granted granted Critical
Publication of EP0615259B1 publication Critical patent/EP0615259B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01B17/38—Fittings, e.g. caps; Fastenings therefor

Definitions

  • the present invention relates to a method for producing a cement connection between an insulator, in particular porcelain insulator, and a fitting, in particular metal fitting, according to the preamble of claim 1 and an insulator arrangement according to the preamble of claim 9.
  • the cement gap is usually filled with a cement compound made of Portland cement or sulfur cement.
  • Tools are needed to fix the porcelain insulator and the metal fitting to each other and to prevent the liquid putty from flowing out. Sulfur cement hardens quickly, so that the tools are only occupied for a short time and are therefore quickly available for making another putty joint.
  • the low temperature resistance and the flammability of this cement are disadvantageous.
  • FR-A-2 184 013 describes these known processes and a cement material made of sulfur, quartz sand and graphite. Graphite is used to generate an electrical conductivity of the cement.
  • DE-A-24 59 146 discloses a cast resin concrete made of epoxy resin and quartz sand for producing a cement connection between a porcelain insulator and a metal fitting.
  • the application of this putty is similar to Portland cement; Due to the slow hardening, the tool usage time is correspondingly long.
  • EP-A-0 524 472 discloses a method for producing a switch pole for a medium or high voltage switch, in which the parts of the switch pole are placed on top of one another and then held together by means of a tool which can be rotated about a horizontal axis until the cemented joints between the porcelain insulators and the fittings are made. It is of particular interest here to only use complex tools for a short time.
  • the tools are only used for the time until a quick-curing first putty has cured at least to such an extent that the insulator and the fitting over these putty are fixed.
  • the tools for producing a new putty connection are already free again.
  • the mechanical strength of the cement bond according to the invention essentially corresponds to that of only one of the two cement compounds.
  • the temperature resistance is determined by that of the slowly setting putty.
  • the insulator arrangement 10 shown in FIG. 1 has two cylindrical hollow insulators 12 made of porcelain, at the axial end regions 14 (see FIG. 2) of which a metal fitting 18 is fastened by means of a cement connection 16.
  • the metal fittings 18 of the stacked hollow insulators 12 are fastened to one another via a screw connection 20, which is only indicated schematically.
  • the two metal fittings 18 at the axial ends of this insulator arrangement 10 are intended to be connected to further parts of a high-voltage device, preferably also by means of screw connections.
  • Such insulator assemblies 10 are used in particular in circuit breakers, capacitors, bushings or surge arresters.
  • the metal fittings 18 are ring-shaped and surround the respective end region 14 of the hollow insulator 12 at a distance, so that a cement gap 22 is present between them. This is filled with cement to secure the metal fitting 18 to the hollow insulator 12.
  • a first layer 24 of a first cement compound 26 extends in the longitudinal direction of the cement gap 22, i.e. Seen in the axial direction of the hollow insulator 12, from the free end 28 of the hollow insulator 12 over a layer length 30 which is approximately 10% to 20% of the length 32 of the cement gap 22.
  • the remaining part of the cement gap 22 is filled with a second layer 34 made of a second cement compound 36.
  • the first putty 26 consists of a fast-curing material, preferably sulfur cement.
  • the second cement compound 36 is a slowly setting material, for example Portland cement, or a synthetic resin concrete with epoxy resin and quartz sand.
  • the end region 14 of the hollow insulator 12 is in the region of it outer surface in a known manner with a sanding 38, which was applied together with the glaze.
  • the inner lateral surface 40 of the metal fitting 18 has circumferential grooves 42 with a triangular or trapezoidal cross section. In these grooves 42 and in the sanding 38, the putty compounds 26 and 36 interlock to ensure a mechanically firm connection.
  • an outer flange 46 is formed in the free end region, which has through-holes 48, indicated by dash-dotted lines, in the axial direction, through which screws can be inserted to enable the connection to the next fitting or the adjacent part of the high-voltage device .
  • an axial sealing surface 50 is formed, which is essentially aligned with the axial end surface 52 of the hollow insulator 12, which is also designed as a sealing surface.
  • an annular disk-like seal 56 made of rubber-elastic material, indicated only by dash-dotted lines, can be inserted in order to seal the interior of the insulator arrangement 10 from the ambient air and also to prevent the first cement compound 26 from being present on this side the ambient air is connected. On the other hand, this connection is prevented by the second cement compound 36.
  • a tool 58 which is indicated by dashed lines.
  • This tool 58 also prevents the first putty mass 26 from flowing out when it is poured into the putty gap 22.
  • the tool 58 has a bead which, seen from the free end of the insulator 12, engages slightly in the putty gap 22. This creates an axial annular groove 60 which prevents the first cement compound 26 from contacting the seal 56. As a result, the mechanical stress on the putty joint 16 and the force with which the metal fitting 18 is to be fastened to the adjacent part can be reduced.
  • the putty connection 16 is produced as follows: The hollow insulator 12 and the metal fitting 18 are placed in the tool 58, so that the putty gap 22 is open towards the top. The first putty 26 is then poured into the putty gap 22 until the layer 24 of this first putty 26 reaches a thickness 32 which is approximately 10% to 20% of the length 32 of the annular gap 22. As soon as this first putty 26 has hardened sufficiently to hold the hollow insulator 12 and the metal fitting 18 against one another, they are removed from the tool 58, after which the tool 58 is available for the production of a new putty connection 16. The cement gap 22 is then filled with the second cement compound 36 and the insulator arrangement set aside for setting. Then the hollow insulator 12 is then turned upside down and provided with the second metal fitting 18 in the same way.

Claims (10)

  1. Procédé de réalisation d'un joint en mastic (16) entre un isolateur (12), en particulier un isolateur en porcelaine, et une armature (18), en particulier une armature métallique, dans lequel on verse un mastic (26, 36) dans l'interstice ouvert en haut (22) situé entre l'isolateur (12) et l'armature (18) et le durcit, caractérisé par le fait qu'on remplit partiellement l'interstice (22) avec un premier mastic à durcissement rapide (26), puis achève de le remplir avec un deuxième mastic à prise lente (36).
  2. Procédé selon la revendication 1, caractérisé par le fait qu'on met en place le deuxième mastic (36) après durcissement au moins partiel du premier mastic (26).
  3. Procédé selon l'une des revendications 1 et 2, caractérisé par le fait qu'on remplit l'interstice (22) avec le premier mastic (26) jusqu'à une épaisseur de couche (30) de 10 % à 20 % de sa longueur totale (32).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé par le fait qu'on utilise comme premier mastic (26) du ciment au soufre.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait qu'on utilise comme deuxième mastic (36) du ciment Portland.
  6. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait qu'on utilise comme deuxième mastic (36) un béton de résine synthétique à résine époxyde et sable de quartz.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé par le fait qu'on coule les mastics (26, 36) dans l'interstice (22).
  8. Procédé selon l'une des revendications 1 à 7, caractérisé par le fait qu'on tient l'isolateur (12) et l'armature (18) alignés au moyen d'un outil (58) et enlève celui-ci après durcissement partiel du premier mastic (26).
  9. Ensemble isolateur comportant un isolateur (12), en particulier un isolateur en porcelaine, et une armature (18), en particulier une armature métallique, qui sont fixés l'un à l'autre au moyen d'un mastic (26, 36) versé dans l'interstice (22) situé entre eux, caractérisé par le fait que l'interstice (22) présente, vu dans sa direction longitudinale, une première couche (24) d'un premier mastic à durcissement rapide (26) et une deuxième couche (34) d'un deuxième mastic à prise lente (36).
  10. Ensemble isolateur selon la revendication 9, caractérisé par le fait que la deuxième couche (34) est placée par rapport à la première couche (24) sur le côté dirigé vers l'air ambiant.
EP93104011A 1993-03-12 1993-03-12 Procédé de fabrication d'une liaison en mastic entre un isolateur et une armature et ensemble isolateur Expired - Lifetime EP0615259B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59302607T DE59302607D1 (de) 1993-03-12 1993-03-12 Verfahren zum Herstellen einer Kittverbindung zwischen einem Isolator und einer Armatur und Isolatoranordnung
EP93104011A EP0615259B1 (fr) 1993-03-12 1993-03-12 Procédé de fabrication d'une liaison en mastic entre un isolateur et une armature et ensemble isolateur
AT93104011T ATE138220T1 (de) 1993-03-12 1993-03-12 Verfahren zum herstellen einer kittverbindung zwischen einem isolator und einer armatur und isolatoranordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93104011A EP0615259B1 (fr) 1993-03-12 1993-03-12 Procédé de fabrication d'une liaison en mastic entre un isolateur et une armature et ensemble isolateur

Publications (2)

Publication Number Publication Date
EP0615259A1 EP0615259A1 (fr) 1994-09-14
EP0615259B1 true EP0615259B1 (fr) 1996-05-15

Family

ID=8212685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104011A Expired - Lifetime EP0615259B1 (fr) 1993-03-12 1993-03-12 Procédé de fabrication d'une liaison en mastic entre un isolateur et une armature et ensemble isolateur

Country Status (3)

Country Link
EP (1) EP0615259B1 (fr)
AT (1) ATE138220T1 (fr)
DE (1) DE59302607D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503324A1 (de) * 1995-02-02 1996-08-08 Hoechst Ceram Tec Ag Isolator mit Kittverbindung und Verfahren zu seiner Herstellung
CN109633315B (zh) * 2018-12-18 2020-11-17 米艾西(福建)测控技术有限公司 一种实现无气泡的绝缘胶灌注方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445596A2 (fr) * 1978-12-27 1980-07-25 Ceraver Perfectionnement a la liaison entre ame et armatures de structures comportant une ame de fibres agglomerees

Also Published As

Publication number Publication date
ATE138220T1 (de) 1996-06-15
DE59302607D1 (de) 1996-06-20
EP0615259A1 (fr) 1994-09-14

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