EP0401483B1 - Procédé pour connecter électriquement des anodes non corrodables avec le noyau corrodable d'un câble d'amenée de courant isolé avec un materiau standard - Google Patents

Procédé pour connecter électriquement des anodes non corrodables avec le noyau corrodable d'un câble d'amenée de courant isolé avec un materiau standard Download PDF

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Publication number
EP0401483B1
EP0401483B1 EP90105585A EP90105585A EP0401483B1 EP 0401483 B1 EP0401483 B1 EP 0401483B1 EP 90105585 A EP90105585 A EP 90105585A EP 90105585 A EP90105585 A EP 90105585A EP 0401483 B1 EP0401483 B1 EP 0401483B1
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EP
European Patent Office
Prior art keywords
anode
cable
bushings
tubing
power supply
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
EP90105585A
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German (de)
English (en)
Other versions
EP0401483A1 (fr
Inventor
Gian Luigi Mussinelli
John Thomas Reding
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.)
Oronzio de Nora SA
Original Assignee
Oronzio de Nora SA
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Filing date
Publication date
Application filed by Oronzio de Nora SA filed Critical Oronzio de Nora SA
Publication of EP0401483A1 publication Critical patent/EP0401483A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/20—Conducting electric current to electrodes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/10—Electrodes characterised by the structure
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
    • C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
    • C23F2213/31—Immersed structures, e.g. submarine structures

Definitions

  • the metal oxide catalytic coating will be formed of a non-passivatable material, such as a noble metal belonging to the platinum group, including platinum, iridium, rhodium, ruthenium, palladium, osmium or mixtures thereof, more preferably, an oxide of one of these materials or a mixture thereof or other transition metals are used.
  • a non-passivatable material such as a noble metal belonging to the platinum group, including platinum, iridium, rhodium, ruthenium, palladium, osmium or mixtures thereof, more preferably, an oxide of one of these materials or a mixture thereof or other transition metals are used.
  • the cable and tubing are passed through the anode until a segment of the cable previously stripped of its insulating sheath and supplied with a highly conductlve split collar having a thickness substantially equal to the combined thickness of the cable insulation and elastomeric tubing is underneath one of the bushings and at least one piece of the tubing is located on at least one side of the stripped cable segment and underneath at least one of the bushings.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Cable Accessories (AREA)

Claims (16)

  1. Procédé de fabrication d'une connexion électrique étanche entre des anodes creuses en métal de valve insolubles anodiquement, et un noyau corrodable d'un câble d'amenée de courant isolé avec une gaine isolante, ledit procédé consistant à
    a) placer une pluralité de bagues métalliques ductiles sur l'anode creuse en métal de valve munie dune surface extérieure résistant à la corrosion ;
    b) faire passer le câble isolé à travers l'anode creuse jusqu'à un segment du câble, dont on a préalablement éliminé la gaine isolante, et que l'on a muni d'un anneau fendu de métal hautement conducteur autour du noyau conducteur du câble, ledit anneau se trouvant en dessous de l'une des bagues et;
    c) réduire de manière plastique la circonférence de l'anode en correspondance avec les bagues exposées extérieurement en refoulant à froid l'anode creuse en métal de valve autour de l'anneau fendu placé sur le noyau conducteur en correspondance avec l'une des bagues et en correspondance avec la bague ou les bagues située(s) sur au moins un côté de la bague en correspondance avec l'anneau fendu,
       caractérisé en ce que ledit procédé comprend en outre entre l'étape a) et l'étape b), l'étape consistant à
       faire passer le câble d'amenée de courant isolé à travers au moins un morceau d'un tube en élastomère ayant un diamètre intérieur légèrement plus grand que le diamètre de la gaine isolante et un diamètre extérieur légèrement plus petit que le diamètre intérieur de l'anode, dans lequel dans l'étape b) suivante, le câble isolé et le tube ou les tubes en élastomère traversent l'anode creuse, de sorte qu'au moins un morceau du tube est situé sur au moins un côté du segment de câble dont on a éliminé la gaine isolante et en dessous d'au moins une des bagues, ledit anneau ayant une épaisseur sensiblement identique à l'épaisseur combinée de l'isolation du câble et du tube en élastomère; et dans lequel dans l'étape c), le refoulement à froid de l'anode en métal de valve en correspondance avec la bague ou les bagues située(s) sur au moins un côté de la bague en correspondance avec l'anneau fendu, est réalisé directement autour du morceau ou des morceaux du tube.
  2. Procédé de la revendication 1, dans lequel les bagues métalliques ductiles exposées extérieurement sont formées d'un métal soluble anodiquement choisi à partir d'un groupe comprenant le cuivre, l'aluminium, le fer, les alliages de nickel-cuivre et des mélanges de ceux-ci.
  3. Procédé de la revendication 1, dans lequel trois bagues sont placées sur l'anode, l'une d'elles étant placée en une position sensiblement centrale par rapport à l'anode et celles qui restent étant placées prés des deux extrémités de l'anode, respectivement.
  4. Procédé de la revendication 1, dans lequel le câble d'amenée de courant est isolé avec un isolant à deux couches comprenant une couche extérieure de polyéthylène de poids moléculaire élevé et une couche intérieure de difluorure de polyvinylidène ou de polymère fluoré.
  5. Procédé de la revendication 1, dans lequel le câble d'amenée de courant est isolé avec un isolant de polyéthylène de poids moléculaire élevé.
  6. Procédé de la revendication 1, dans lequel ledit tube en élastomère est un tube en caoutchouc copolymère d'éthylène-propylène modifié au diène.
  7. Procédé de la revendication 1, dans lequel ledit anneau est formé de cuivre plaqué argent.
  8. Procédé de la revendication 1, dans lequel ladite anode est formée de titane recouvert d'un revêtement conducteur catalytique d'oxyde métallique mixte.
  9. Procédé de la revendication 2, dans lequel, après l'étape c), les bagues sont éliminées par dissolution anodique durant un processus anodique initial dans des conditions d'exploitation.
  10. Procédé de la revendication 2, dans lequel,après l'étape c), les bagues sont éliminées par un moyen mécanique avant utilisation.
  11. Anode intermédiaire pouvant être obtenue par le procédé de la revendication 3.
  12. Anode terminale pouvant être obtenue par le procédé de l'une quelconque des revendications 1, 2 ou 4 à 8, dans lequel une première bague est placée en une position sensiblement centrale par rapport à l'anode et une deuxième bague est placée en une extrémité de l'anode, l'extrémité terminale de ladite anode étant étanche.
  13. Anode terminale de la revendication 12, dans laquelle un embout est soudé à l'extrémité terminale.
  14. Anode terminale de la revendication 13, dans laquelle ledit embout est formé de titane enduit.
  15. Anode terminale de la revendication 11, dans laquelle une tige en plastique non élastomère, ayant un diamètre sensiblement égal au diamètre intérieur du tube en élastomère, est poussée dans le tube et dans laquelle l'anode de titane est sortie dans la position correspondant à l'insertion de la tige.
  16. Utilisation d'une anode pouvant être obtenue avec le procédé de l'une quelconque des revendications 1 à 10, pour protéger, de manière cathodique, de le corrosion des structures métalliques se trouvant dans des électrolytes.
EP90105585A 1989-05-26 1990-03-23 Procédé pour connecter électriquement des anodes non corrodables avec le noyau corrodable d'un câble d'amenée de courant isolé avec un materiau standard Expired - Lifetime EP0401483B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35871789A 1989-05-26 1989-05-26
US358717 1989-05-26

Publications (2)

Publication Number Publication Date
EP0401483A1 EP0401483A1 (fr) 1990-12-12
EP0401483B1 true EP0401483B1 (fr) 1994-12-21

Family

ID=23410744

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Application Number Title Priority Date Filing Date
EP90105585A Expired - Lifetime EP0401483B1 (fr) 1989-05-26 1990-03-23 Procédé pour connecter électriquement des anodes non corrodables avec le noyau corrodable d'un câble d'amenée de courant isolé avec un materiau standard

Country Status (5)

Country Link
EP (1) EP0401483B1 (fr)
AT (1) ATE116010T1 (fr)
DE (1) DE69015260T2 (fr)
DK (1) DK0401483T3 (fr)
ES (1) ES2066028T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732172B4 (de) * 1997-07-25 2007-08-02 Norddeutsche Seekabelwerke Gmbh & Co. Kg Verfahren zur Beseitigung von Fehlerstellen bei der Fertigung von Rohren für Kabel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2042415B1 (es) * 1992-05-07 1997-02-01 W W I Proytec S L Sistema de proteccion catodica por corriente impresa para partes metalicas de embarcaciones.
GB9221706D0 (en) * 1992-10-15 1992-12-02 Raychem Sa Nv Repair of damaged electrode in impressed current corrosion protection system
EP3751020A1 (fr) * 2019-06-10 2020-12-16 Investigación y desarrollo naval S.L.U. Procédé et système pour générer un ou plusieurs composés comprenant du chlore sur une partie d'une surface immergé dans de l'eau salée
CN112195473B (zh) * 2020-09-12 2022-07-12 青岛赢海防腐防污技术有限公司 管道内壁用通电保护装置、施工方法及加工方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1163581B (it) * 1983-06-23 1987-04-08 Oronzio De Nora Sa Procedimento per effettuare la connessione elettrica di anodi non corrodibili all'anima corrodibile del cavo di alimentazione

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732172B4 (de) * 1997-07-25 2007-08-02 Norddeutsche Seekabelwerke Gmbh & Co. Kg Verfahren zur Beseitigung von Fehlerstellen bei der Fertigung von Rohren für Kabel

Also Published As

Publication number Publication date
ES2066028T3 (es) 1995-03-01
EP0401483A1 (fr) 1990-12-12
DE69015260T2 (de) 1995-05-18
ATE116010T1 (de) 1995-01-15
DE69015260D1 (de) 1995-02-02
DK0401483T3 (da) 1995-04-03

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