EP0012950B1 - Insulator with several dielectrical parts - Google Patents
Insulator with several dielectrical parts Download PDFInfo
- Publication number
- EP0012950B1 EP0012950B1 EP79105162A EP79105162A EP0012950B1 EP 0012950 B1 EP0012950 B1 EP 0012950B1 EP 79105162 A EP79105162 A EP 79105162A EP 79105162 A EP79105162 A EP 79105162A EP 0012950 B1 EP0012950 B1 EP 0012950B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dielectric
- head
- rod
- insulator
- cover
- 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
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Classifications
-
- 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
- H01B17/02—Suspension insulators; Strain insulators
-
- 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 an insulator comprising a dielectric element in tempered glass having the shape of a plate and having a cylindrical head, at least one rod of which at least one end is sealed in the housing defined by the head of a dielectric element, said rod having in the vicinity of its sealed end a collar with an outside diameter greater than the outside diameter of the head in which said end is sealed, and at least one cover covering the head with a dielectric and sealed on the latter.
- Such an insulator is known, for example from document FR-A-1 166 372.
- such insulators are constituted by a multiplicity of such elements making up a chain with multiple dielectrics.
- the first cover comprises a member for fixing to a support
- the last rod is extended by a member for supporting an electric cable.
- a cover and a rod are produced in a single piece which comprises a first part which is a rod for a dielectric and a second part which is a cover for the following dielectric.
- the dielectrics are often made of tempered glass, and in the event of destruction of a dielectric, for example by peeling, as happens when a rifle bullet is fired on an insulator dielectric, there does not remain then more than glass debris forming the bottom of the dielectric head and the cylindrical area between the cover and the rod.
- the present invention aims to overcome these drawbacks, and relates to an insulator such as that described above, characterized in that the cover has a flared base covering an annular portion of the dielectric extending beyond the diameter outside of the head, so as to define a rigid extension on either side of the dielectric element, and that the annular portion of the dielectric between the flange of the rod and the flared base of the cover is present on the side of the cover a circular boss covered by the flared base of the cover, and on the side of the collar a circular reinforcement to which the collar extends.
- the assembly shows a partial view of an insulator in which there are two dielectrics 1 and 2.
- the dielectric 1 conventionally consists of a substantially plate-shaped part 3 having a cylindrical head 4 ; this dielectric 1 is usually made of tempered glass.
- a metal rod 5 is sealed by one end in the housing defined by the head 4 of the dielectric 1, by means of a mass of cement mortar 6.
- a metal cover 7 is also sealed on the head 4 of the dielectric 1 by mortar of cement 8.
- a metal rod 9 is sealed inside the head 10 of the dielectric 2 by mortar 11, and a metal cover 12 is sealed on the head 10 of the dielectric 2 by mortar 13.
- the assembly is carried out in a chain by means of a rod-cover 14 here, the rod 5 of the rod-cover 14 serving for the attachment of the dielectric 1 while the cover 12 of the rod-cover 14 is used to attach the dielectric 2.
- the rod 5 has, just below the plate-shaped part 3 of the dielectric 1, a flange 15 whose diameter extends beyond the diameter of the head 4 of the dielectric 1, and the cover 7 has a flared base 16 which covers a portion of the upturned portion 3 of the dielectric 1, so that a zone 17 substantially horizontal of the dielectric 1 is thus trapped between the flange 15 and the flared base 16 of the cover 7.
- the fragments of the area 17 remain trapped and participate in the resistance to bending of the assembly.
- the plate-shaped part 3 has a circular reinforcement 18 and a boss 19 giving it a profile in the form of a stair step.
- the base 16 of the cover 7 extends to cover the boss 19; likewise, the flange 15 extends to the reinforcement 18.
- the rod-cover 14 advantageously comprises reinforcement ribs 40 connecting the flange 15 to the cover 12.
- the dielectrics 20, 21, 22 are arranged head to tail.
- the assembly is then carried out by means of double rods 23, 24 and double hoods 25, 26.
- the rods also have flanges 27, 28, 29, and the hoods of the flared bases 30, 31, 32.
- rods and hoods are sealed but it is also possible to adopt the solution with double rods and double hoods poured by gravity on a crimped sleeve according to the technique described for example in FR-A-2 209 937.
Landscapes
- Insulators (AREA)
- Organic Insulating Materials (AREA)
- Insulating Bodies (AREA)
Description
La présente invention concerne un isolateur comprenant un élément diélectrique en verre trempé ayant la forme d'une assiette et présentant une tête cylindrique, au moins une tige dont au moins une extrémité est scellée dans le logement défini par la tête d'un élément diélectrique, ladite tige présentant au voisinage de son extrémité scellée une collerette de diamètre extérieur supérieur au diamètre extérieur de la tête dans laquelle est scellée ladite extrémité, et au moins un capot recouvrant la tête d'un diélectrique et scellé sur cette dernière.The present invention relates to an insulator comprising a dielectric element in tempered glass having the shape of a plate and having a cylindrical head, at least one rod of which at least one end is sealed in the housing defined by the head of a dielectric element, said rod having in the vicinity of its sealed end a collar with an outside diameter greater than the outside diameter of the head in which said end is sealed, and at least one cover covering the head with a dielectric and sealed on the latter.
Un tel isolateur est connu, par exemple du document de FR-A-1 166 372.Such an insulator is known, for example from document FR-A-1 166 372.
Généralement, de tels isolateurs sont constitués par une multiplicité de tels éléments réalisant une chaîne à diélectriques multiples. Dans cette chaîne, le premier capot comporte un organe de fixation à un support, et la dernière tige se prolonge par un organe permettant de supporter un câble électrique. Dans les éléments intermédiaires, un capot et une tige sont réalisés en une seule pièce qui comporte une première partie qui est une tige pour un diélectrique et une seconde partie qui est un capot pour le diélectrique suivant..Generally, such insulators are constituted by a multiplicity of such elements making up a chain with multiple dielectrics. In this chain, the first cover comprises a member for fixing to a support, and the last rod is extended by a member for supporting an electric cable. In the intermediate elements, a cover and a rod are produced in a single piece which comprises a first part which is a rod for a dielectric and a second part which is a cover for the following dielectric.
Dans le cas d'un isolateur disposé horizontalement, la disposition est un peu différente: les diélectriques sont alors montés tête-bêche, et on a des tiges doubles et des capots doubles, mais l'invention s'applique indifféremment à l'un ou l'autre cas.In the case of an insulator arranged horizontally, the arrangement is a little different: the dielectrics are then mounted head to tail, and there are double rods and double covers, but the invention applies equally to one or the other case.
Dans de tels isolateurs, les diélectriques sont souvent en verre trempé, et en cas de destruction d'un diélectrique, par écaletement par exemple, comme cela se produit lorsqu'une balle de fusil est tirée sur un diélectrique d'isolateur, il ne subsiste alors plus que des débris de verre formant le fond de la tête du diélectrique et la zone cylindrique comprise entre le capot et la tige. Il a certes été proposé (US-A-2 099 540) de monter un boucilier de protection en deux demicoquilles métalliques ondulées pour protéger les isolateurs en tête de poteaux télégraphiques, mais un tel bouclier, monté volontairement lâche pour autoriser tous mouvements résultant d'un choc, ne constitue en fait qu'un clinquant de protection sans participer aucunement à la résistance mécanique des isolateurs.In such insulators, the dielectrics are often made of tempered glass, and in the event of destruction of a dielectric, for example by peeling, as happens when a rifle bullet is fired on an insulator dielectric, there does not remain then more than glass debris forming the bottom of the dielectric head and the cylindrical area between the cover and the rod. It has certainly been proposed (US-A-2,099,540) to mount a protective eyebrow shield in two corrugated metal half-shells to protect the insulators at the head of telegraph poles, but such a shield, mounted voluntarily loose to allow any movements resulting from a shock, in fact only constitutes a protective foil without taking any part in the mechanical resistance of the insulators.
Il y a donc toujours un risque que l'isolateur tombe avec le câble qui y est accroché, ce qui est hautement indésirable.There is therefore always a risk that the insulator will fall with the cable attached to it, which is highly undesirable.
La présente invention a pour but de pallier ces inconvénients, et a pour objet un isolateur tel que celui décrit ci-dessus, caractérisé par le fait que le capot présente une base évasée couvrant une portion annulaire du diélectrique s'étendant au-delà du diamètre extérieur de la tête, de façon à définir un prolongement rigide de part et d'autre de l'élément diélectrique, et que la portion annulaire du diélectrique comprise entre la collerette de la tige et la base évasée du capot présente, du côté du capot un bossage circulaire recouvert par la base évasée du capot, et du côté de la collerette un renforcement circulaire jusqu'où s'étend la collerette.The present invention aims to overcome these drawbacks, and relates to an insulator such as that described above, characterized in that the cover has a flared base covering an annular portion of the dielectric extending beyond the diameter outside of the head, so as to define a rigid extension on either side of the dielectric element, and that the annular portion of the dielectric between the flange of the rod and the flared base of the cover is present on the side of the cover a circular boss covered by the flared base of the cover, and on the side of the collar a circular reinforcement to which the collar extends.
Ainsi, selon l'invention, en cas d'éclatement d'un diélectrique, des débris de verre se trouvent emprisonnés d'une part entre la tige et le capot mais aussi entre la collerette et la base du capot évitant aux débris de partir, et la cohésion entre les morceaux reste telle que l'isolateur conserve une bien plus grande résistance.Thus, according to the invention, in the event of a dielectric burst, glass debris is trapped on the one hand between the rod and the cover but also between the flange and the base of the cover preventing debris from leaving, and the cohesion between the pieces remains such that the insulator retains much greater resistance.
Il est à noter que le document de brevet FR-A- 533 069 décrit déjà un isolateur dont le diélectrique en porcelaine est partiellement revêtu d'une part sur sa face supérieure d'une pièce métallique mince fixée au capot, et d'autre part sur sa face inférieure d'une pièce métallique mince fixée à la douille interne. Cependant, ces pièces métalliques remplissent un rôle exclusivement d'ordre électrique, permettant, grâce au choix judicieux de leurs dimensions, de régler la capacité électrique du maillon. Autrement dit, il s'agit de pièces minces rapportées ne pouvant remplir aucune fonction mécanique.It should be noted that the patent document FR-A-533 069 already describes an insulator, the porcelain dielectric of which is partially coated on the one hand on its upper face with a thin metallic piece fixed to the cover, and on the other hand on its underside of a thin metal piece attached to the internal sleeve. However, these metal parts fulfill an exclusively electrical role, allowing, thanks to the judicious choice of their dimensions, to adjust the electrical capacity of the link. In other words, these are thin inserts that cannot fulfill any mechanical function.
On va maintenant décrire des exemples de réalisation de l'invention en se référant au dessin annexé dans lequel:
- - La figure 1 montre en coupe une vue partielle d'un isolateur selon l'invention.
- - La figure 2 montre en coupe une vue partielle d'un isolateur selon l'invention dans le cas d'un montage tête-bêche des diélectriques.
- - Figure 1 shows in section a partial view of an insulator according to the invention.
- - Figure 2 shows in section a partial view of an insulator according to the invention in the case of head-to-tail mounting of the dielectrics.
En se reportant à la figure 1, l'ensemble représente une vue partielle d'un isolateur dans laquelle figurent deux diélectriques 1 et 2. Le diélectrique 1 est constitué classiquement d'une partie sensiblement en forme d'assiette 3 présentant une tête cylindrique 4; ce diélectrique 1 est usuellement en verre trempé.Referring to Figure 1, the assembly shows a partial view of an insulator in which there are two dielectrics 1 and 2. The dielectric 1 conventionally consists of a substantially plate-shaped part 3 having a
Une tige métallique 5 est scellée par une extrémité dans le logement défini par la tête 4 du diélectrique 1, au moyen d'une masse de mortier de ciment 6. Un capot métallique 7 est également scellé sur la tête 4 du diélectrique 1 par du mortier de ciment 8. De la même manière, une tige métallique 9 est scellée à l'intérieur de la tête 10 du diélectrique 2 par du mortier 11, et un capot métallique 12 est scellé sur la tête 10 du diélectrique 2 par du mortier 13.A metal rod 5 is sealed by one end in the housing defined by the
Comme on le voit, l'assemblage est réalisé en chaîne au moyen ici d'une tige-capot 14, la tige 5 de la tige-capot 14 servant à l'attache du diélectrique 1 tandis que le capot 12 de la tige-capot 14 sert à l'attache du diélectrique 2.As can be seen, the assembly is carried out in a chain by means of a rod-
Selon l'invention, la tige 5 présente, juste au-dessous de la partie en forme d'assiette 3 du diélectrique 1, une collerette 15 dont le diamètre s'étend au delà du diamètre de la tête 4 du diélectrique 1, et le capot 7 présente une base évasée 16 qui recouvre une portion de la partie en forme d'assiette retournée 3 du diélectrique 1, de telle sorte qu'une zone 17 sensiblement horizontale du diélectrique 1 se trouve ainsi emprisonnée entre la collerette 15 et la base évasée 16 du capot 7.According to the invention, the rod 5 has, just below the plate-shaped part 3 of the dielectric 1, a
Ainsi, en cas de fragmentation du verre du diélectrique, les fragments de la zone 17 restent emprisonnés et participent à la résistance à la flexion de l'ensemble.Thus, in the event of fragmentation of the glass of the dielectric, the fragments of the
Afin d'améliorer cet emprisonnement, la partie en forme d'assiette 3 présente un renforcement 18 et un bossage 19 circulaires lui donnant un profil en forme de marche d'escalier. La base 16 du capot 7 s'étend jusqu'à recouvrir le bossage 19; de même, la collerette 15 s'étend jusqu'au renforcement 18. La tige-capot 14 comporte avantageusement des nervures de renforcement 40 reliant la collerette 15 au capot 12.In order to improve this confinement, the plate-shaped part 3 has a
Dans la figure 2, on a représenté une partie d'un isolateur destiné à être placé horizontalement.In Figure 2, there is shown a part of an insulator intended to be placed horizontally.
Les diélectriques 20, 21, 22 sont disposés tête-bêche. L'assemblage est alors réalisé au moyen de tiges doubles 23, 24 et de capots doubles 25, 26. Les tiges présentent également des collerettes 27, 28, 29, et les capots des bases évasées 30, 31, 32.The
Dans cette figure 2, tiges et capots sont scellés mais on peut également adopter la solution avec tiges doubles et capots doubles coulés par gravité sur chemise sertie selon la technique décrite par exemple dans le FR-A- 2 209 937.In this FIG. 2, rods and hoods are sealed but it is also possible to adopt the solution with double rods and double hoods poured by gravity on a crimped sleeve according to the technique described for example in FR-A-2 209 937.
Claims (1)
- An insulator which includes a dielectric element of tempered glass having the shape of a plate (3) and presenting a cylindrical head (4), at least one rod (5), at least one end of which is embedded inside a recess defined by the head of a dielectric element, said rod presenting near its embedded end a flange (15; 27, 28, 29) of an outer diameter greater than the outer diameter of the head inside which is embedded said rod end, and at least a cap (7) covering the head of a dielectric and sealed on it, characterized in that the cap presents a flared base (16; 30, 31, 32) covering an annular portion of the dielectric extending beyond the outer diameter of the head so as to define a rigid prolongation on either side of the dielectric element, and that the annular portion of the dielectric comprised between the flange of the rod and the flared. base of the cap presents, on the side of the cap, a circular boss covered by the flared base of the cap, and on the side of the flange a circular rein-' forcement which is abutted by the rim of the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT79105162T ATE5112T1 (en) | 1978-12-21 | 1979-12-14 | INSULATOR WITH MULTIPLE DIELECTRIC PARTS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7835918A FR2445002A1 (en) | 1978-12-21 | 1978-12-21 | MULTIPLE DIELECTRIC INSULATOR |
| FR7835918 | 1978-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0012950A1 EP0012950A1 (en) | 1980-07-09 |
| EP0012950B1 true EP0012950B1 (en) | 1983-10-19 |
Family
ID=9216385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79105162A Expired EP0012950B1 (en) | 1978-12-21 | 1979-12-14 | Insulator with several dielectrical parts |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4280017A (en) |
| EP (1) | EP0012950B1 (en) |
| JP (1) | JPS5590021A (en) |
| AR (1) | AR218570A1 (en) |
| AT (1) | ATE5112T1 (en) |
| BR (1) | BR7908373A (en) |
| CA (1) | CA1121009A (en) |
| DE (1) | DE2966341D1 (en) |
| ES (1) | ES487023A1 (en) |
| FR (1) | FR2445002A1 (en) |
| MX (1) | MX146627A (en) |
| NO (1) | NO794118L (en) |
| ZA (1) | ZA796782B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2511181A1 (en) * | 1981-08-05 | 1983-02-11 | Ceraver | TEMPERED GLASS DIELECTRIC PIECE FOR ELECTRICAL ISOLATOR AND ISOLATOR BY APPLYING |
| JPS6264010A (en) * | 1985-09-13 | 1987-03-20 | 日本碍子株式会社 | Electrically insulating bushing |
| JPS62274510A (en) * | 1986-05-22 | 1987-11-28 | 日本碍子株式会社 | Suspension insulator |
| RU2734229C2 (en) * | 2019-02-26 | 2020-10-13 | Акционерное общество "Ю.М.Э.К." (АО "Ю.М.Э.К.") | Pin insulator |
| CN112271042A (en) * | 2020-10-12 | 2021-01-26 | 江西省萍乡市南坑高压电瓷有限公司 | Electric porcelain insulator convenient to disassemble and assemble for high-voltage power transmission line and manufacturing process |
| CN112670929B (en) * | 2020-11-30 | 2022-05-03 | 国网河北省电力有限公司经济技术研究院 | Windage yaw prevention insulator structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR533069A (en) * | 1921-03-30 | 1922-02-18 | Anciens Etablissements Parvill | Improvements to high voltage insulators |
| US2099540A (en) * | 1934-05-10 | 1937-11-16 | Western Union Telegraph Co | Insulator shield |
| FR1166372A (en) * | 1957-02-14 | 1958-11-05 | Electro Verre L | Insulating assembly for high voltage |
-
1978
- 1978-12-21 FR FR7835918A patent/FR2445002A1/en active Granted
-
1979
- 1979-12-06 US US06/101,007 patent/US4280017A/en not_active Expired - Lifetime
- 1979-12-10 MX MX180402A patent/MX146627A/en unknown
- 1979-12-13 ZA ZA00796782A patent/ZA796782B/en unknown
- 1979-12-14 DE DE7979105162T patent/DE2966341D1/en not_active Expired
- 1979-12-14 EP EP79105162A patent/EP0012950B1/en not_active Expired
- 1979-12-14 AT AT79105162T patent/ATE5112T1/en not_active IP Right Cessation
- 1979-12-17 NO NO794118A patent/NO794118L/en unknown
- 1979-12-18 AR AR279332A patent/AR218570A1/en active
- 1979-12-18 ES ES487023A patent/ES487023A1/en not_active Expired
- 1979-12-20 CA CA000342439A patent/CA1121009A/en not_active Expired
- 1979-12-20 BR BR7908373A patent/BR7908373A/en unknown
- 1979-12-21 JP JP16747679A patent/JPS5590021A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0012950A1 (en) | 1980-07-09 |
| JPS5590021A (en) | 1980-07-08 |
| AR218570A1 (en) | 1980-06-13 |
| MX146627A (en) | 1982-07-15 |
| ZA796782B (en) | 1980-11-26 |
| FR2445002A1 (en) | 1980-07-18 |
| NO794118L (en) | 1980-06-24 |
| CA1121009A (en) | 1982-03-30 |
| DE2966341D1 (en) | 1983-11-24 |
| FR2445002B1 (en) | 1982-05-07 |
| ATE5112T1 (en) | 1983-11-15 |
| BR7908373A (en) | 1980-08-26 |
| ES487023A1 (en) | 1980-09-16 |
| US4280017A (en) | 1981-07-21 |
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