DE1028403B - Protective electrode for cathodic corrosion protection of metal pipes laid in the ground or electrical metal-sheathed cables - Google Patents

Protective electrode for cathodic corrosion protection of metal pipes laid in the ground or electrical metal-sheathed cables

Info

Publication number
DE1028403B
DE1028403B DEK29004A DEK0029004A DE1028403B DE 1028403 B DE1028403 B DE 1028403B DE K29004 A DEK29004 A DE K29004A DE K0029004 A DEK0029004 A DE K0029004A DE 1028403 B DE1028403 B DE 1028403B
Authority
DE
Germany
Prior art keywords
metal
corrosion protection
ground
protective electrode
sheathed cables
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.)
Pending
Application number
DEK29004A
Other languages
German (de)
Inventor
Dr Georg Falk
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.)
KABEL und METALLWERKE NEUMEYER
Original Assignee
KABEL und METALLWERKE NEUMEYER
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 KABEL und METALLWERKE NEUMEYER filed Critical KABEL und METALLWERKE NEUMEYER
Priority to DEK29004A priority Critical patent/DE1028403B/en
Publication of DE1028403B publication Critical patent/DE1028403B/en
Pending legal-status Critical Current

Links

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
    • C23F13/10—Electrodes characterised by the structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • 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
    • C23F2213/32—Pipes

Description

Schutzelektrode zum kathodischen Korrosionsschutz von in der Erde verlegten Metallrohren oder elektrischen metallummantelten Kabeln Zum Schutze in der Erde verlegter Metallrohre oder metallummantel,ter elektrischer Kabel haben sich Anoderrketten, bewährt, die aus vielen, auf ein Leitungsseil stramm aufgezogenen Kohlezylindern bestehen,. Man verbindetsie mit dem positiven Pol einer Gleichstromquelle, während man deren, negativen, Pol an, die zu schützenden. Rohre oder Kabelmäntel legt. Die VorzÜge dieses Korrosionsschutzes sind beImnnt. Ihr Nachteil liegt besonders in der ums,tändlichen und teueren Herstellung. Häufige ist auch eine größere mechanischeFestigkeit erwünscht, als sie diegenannte Konstruktion zu gewähren, imstande ist.Protective electrode for cathodic corrosion protection in the earth laid metal pipes or electrical metal-sheathed cables for protection in metal pipes or metal sheaths laid in the ground, the electrical cables Anoderr chains, tried and tested, are made up of many, tightly pulled onto a cable Coal cylinders are made. Connect them to the positive pole of a direct current source, while their, negative, pole is attached to those to be protected. Pipes or cable sheaths lays. The advantages of this corrosion protection are limited. Their disadvantage is particular in the cumbersome and expensive production. A greater mechanical strength is also common is desirable as it is able to provide the aforesaid construction.

Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile zu vermeiden, ohne dieVorteile der Anodenketten anzutasten. Dies wird gemäß der Erfindung da,durch erreicht, daß als Schutzelektrode ein Metallseil z. B. ein Stahl-, Aluminium- oder Kupferseil, verwendet wird, das mit einer Hülle aus elektrisr#Ii leitfä,bigem Kunststoff oder Gummi überzogen ist. Eine solche Hülle läßt sich in besonders einfacher #,#Te;ise nach dem bekannten Spritzverfabren vollkommen dicht auf das Metallseil aufbringen.The invention is based on the object of avoiding these disadvantages, without affecting the advantages of the anode chains. This is done according to the invention achieved that a metal rope z. B. a steel, aluminum or Copper cable is used, which is covered with a sheath made of electrically conductive plastic or rubber coated. Such a shell can be in a particularly simple #, # Te; ise Apply completely tightly to the metal cable according to the known spray method.

Es ist an sich bekannt, Kunststoffe oder Gummi durch Ruß-, Graphit- oder Metallpulverzusätze leitend zu machen. Derartige Mischungen werden für solche Zwecke verwendet, bei denen nur eine geringe Leitfähigkeit erforderlich: ist, insbesondere für Abschirinzwecke und. zur Potentialsteiu.erung in elektrischen Kabbeln. Es hat sich nuin: gezeigt, daß sich die Leitfähigkeit von Kunststoffen oder Gumni.i durch. entsprechende Ruß- oder Graphitzusätze annähernd. auf die gleiche Größenordnung wie die, Leitfäbigkeit der bekannten Kohfeanoden bringen läßt, während durch den Zusatz von Metallpulver keine bef riedigend gleichmäßige und ausreichende Leitfähigkeit zu erreichen ist. Die. guten mechanischen Eigenschaften und die Beständigkeit gegenüber den ühlicherweise im Boden. vorkommenden korrodierenden Agenzien sichern der Schutzelektrode gemäß der Erfindung eine lange Lebensdauer.It is known per se to make plastics or rubber conductive by adding carbon black, graphite or metal powder. Such mixtures are used for purposes where only a low conductivity is required: in particular for shielding purposes and. for increasing the potential in electrical cables. It has only been shown that the conductivity of plastics or rubber corresponding carbon black or graphite additives approximately. can be brought to the same order of magnitude as the conductivity of the known carbon anodes, while the addition of metal powder does not allow satisfactory uniform and sufficient conductivity to be achieved. The. good mechanical properties and resistance to those usually found in the soil. occurring corrosive agents ensure the protective electrode according to the invention a long service life.

Claims (1)

PATENTANSPRUCH: Schutzelektrotde zum kathodischen, Korrosionisschutz von, in dier, Erde! verlegten Metallrohren oder elektrischen metallummantelten Kabeln, dadurch gekennzeichnet, daß die Schutzelektrode aus einem Metallseil, z. B. einem Stahl-, Aluminium-oder Kupferseil, besteht, das mit einer HÜlle aus elektrisch lei,tfähigein Gummi oder Kunststoff iiber7o#zienL ist. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 713 635, 741 294. PATENT CLAIM: Protective electrodes for cathodic, corrosion protection of, in dier, earth! laid metal pipes or electrical metal-sheathed cables, characterized in that the protective electrode consists of a metal cable, e.g. B. a steel, aluminum or copper rope, which is covered with a sleeve made of electrically conductive rubber or plastic. Considered publications: German Patent Specifications No. 713 635, 741 294.
DEK29004A 1956-06-02 1956-06-02 Protective electrode for cathodic corrosion protection of metal pipes laid in the ground or electrical metal-sheathed cables Pending DE1028403B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK29004A DE1028403B (en) 1956-06-02 1956-06-02 Protective electrode for cathodic corrosion protection of metal pipes laid in the ground or electrical metal-sheathed cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK29004A DE1028403B (en) 1956-06-02 1956-06-02 Protective electrode for cathodic corrosion protection of metal pipes laid in the ground or electrical metal-sheathed cables

Publications (1)

Publication Number Publication Date
DE1028403B true DE1028403B (en) 1958-04-17

Family

ID=7218375

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK29004A Pending DE1028403B (en) 1956-06-02 1956-06-02 Protective electrode for cathodic corrosion protection of metal pipes laid in the ground or electrical metal-sheathed cables

Country Status (1)

Country Link
DE (1) DE1028403B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550309A1 (en) * 1983-08-01 1985-02-08 Dillinger Stahlbau Section for joining a long-distance heating pipeline to the inlet pipe in a building

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE713635C (en) * 1938-12-25 1941-11-12 Siemens Schuckertwerke Akt Ges Electrically semiconducting ground
DE741294C (en) * 1937-06-26 1943-11-09 Siemens Ag Process for the production of soot-containing rubber mixtures, plastics, paints or the like.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741294C (en) * 1937-06-26 1943-11-09 Siemens Ag Process for the production of soot-containing rubber mixtures, plastics, paints or the like.
DE713635C (en) * 1938-12-25 1941-11-12 Siemens Schuckertwerke Akt Ges Electrically semiconducting ground

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550309A1 (en) * 1983-08-01 1985-02-08 Dillinger Stahlbau Section for joining a long-distance heating pipeline to the inlet pipe in a building

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