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DE1104288B - Anode device for cathodic protection of the inner walls of hollow bodies - Google Patents

Anode device for cathodic protection of the inner walls of hollow bodies

Info

Publication number
DE1104288B
DE1104288B DEE15893A DEE0015893A DE1104288B DE 1104288 B DE1104288 B DE 1104288B DE E15893 A DEE15893 A DE E15893A DE E0015893 A DEE0015893 A DE E0015893A DE 1104288 B DE1104288 B DE 1104288B
Authority
DE
Germany
Prior art keywords
rod
anode
discharge line
bore
platinum
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
DEE15893A
Other languages
German (de)
Inventor
Walter F Doring
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.)
Engelhard Industries Inc
Original Assignee
Engelhard Industries Inc
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 Engelhard Industries Inc filed Critical Engelhard Industries Inc
Publication of DE1104288B publication Critical patent/DE1104288B/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F13/00Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/18Means for supporting electrodes
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F13/00Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/10Electrodes characterised by the structure
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F2213/00Aspects of inhibiting corrosion of metals by anodic or cathodic protection
    • C23F2213/30Anodic or cathodic protection specially adapted for a specific object
    • C23F2213/32Pipes

Landscapes

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

Description

DEUTSCHESGERMAN

Die Erfindung betrifft eine Anodenvorrichtung zum kathodischen Schutz der Innenwandungen Elektrolyte enthaltender Metallhohilkörper, insbesondere Rohre, wie sie beispielsweise in Kühlsystemen für Ölraffinerien vorliegen.The invention relates to an anode device for cathodic protection of the inner walls of electrolytes containing hollow metal bodies, in particular pipes, such as those used, for example, in cooling systems for oil refineries are present.

Solche Rohre, die gewöhnlich aus Stahl hergestellt wdfden, müssen insbesondere an ihren freiliegenden Innenwandungen gegen Korrosion geschützt werden. Dieser Korrosionsschutz wird nach einem an sich bekannten Prinzip in wirksamer Weise durch einen kathodischen Schutz verwirklicht, wobei die Rohrwandungen ein schwach negatives Potential aufweisen. Die Stromzuführung erfolgt durch Anoden, die durch die Rohrwandungen hindurchgeführt sind.Such pipes, which are usually made of steel, must in particular be exposed to their exposed parts Inner walls are protected against corrosion. This corrosion protection is based on one known per se Principle effectively implemented by cathodic protection, the pipe walls have a weak negative potential. the Power is supplied through anodes that are passed through the pipe walls.

Die erfindungsgemäße Anodenvorrichtung ist ge-' kennzeichnet durch einen Stab aus Isolierstoff als Anodenträger, der durch die Wandung des zu schützenden Körpers, insbesondere eines Rohres, geführt ist und einen von diesem Träger getragenen Metallkörper als Anode, deren AWeitung in einer im wesentlichen axial verlaufenden Bohrung durch den Anodenträger hindürchgeführt ist, wobei der Zwischenraum zwischen den. Wandungen der Bohrung und der Ableitung abgedichtet ist.The anode device according to the invention is characterized by a rod made of insulating material as an anode support, which is passed through the wall of the body to be protected, in particular a pipe, and a metal body carried by this carrier as an anode, the widening of which in an essentially axial direction extending bore is passed through the anode support, the space between the. Walls of the bore and the discharge is sealed.

Diese Anodenvorrichtung für den kathodischen Schutz von insbesondere Rohren läßt sich leicht herstellen und in die Wandung des zu schützenden Körpers einsetzen und arbeitet lange Zeiträume hindurch zuverlässig. Vorzugsweise besteht der durch den Stab geführte Leiter, mindestens der aus dem Stab hervorragende Teil, aus einem Platinmetall, einschließlich Legierungen der Platinmetalle, insbesondere Platin (zu den Platinmefcallen gehören Palladium, Rhodium, Indium, Ruthenium, Osmium und Platin selbst). Weitere Vorteile und Zweckangaben der Erfindung ergeben sich aus der folgenden Beschreibung und der Zeichnung. In der Zeichnung zeigtThis anode device for the cathodic protection of pipes, in particular, is easy to manufacture and insert it into the wall of the body to be protected and work through it for long periods of time Reliable. The conductor passed through the rod preferably consists of at least the conductor protruding from the rod Part made of a platinum metal, including alloys of the platinum metals, in particular platinum (The platinum metals include palladium, rhodium, indium, ruthenium, osmium and platinum itself). Further Advantages and details of the purpose of the invention emerge from the following description and the drawing. In the drawing shows

Fig. 1 eine bevorzugte Ausfühirungsform der Erfindung in Seitenansicht,1 shows a preferred embodiment of the invention in side view,

Fig. 2 einen Längsschnitt durch die Anode gemäß Fig. 1 und2 shows a longitudinal section through the anode according to FIGS. 1 and

Fig. 3 eine andere Ausführungsform der Erfindung im Längsschnitt.3 shows another embodiment of the invention in longitudinal section.

Die Ausführungsform der erfindungsgemäßen Vorrichtung nach Fig. 1 umfaßt einen Grundteil oder Körper in Form eines Stabes 4 aus Isolierstoff, z. B. Kunststoff, der in die Wandung 6 eines Behälters, Rohrs od. dgl. eingefügt wird unid dieselbe durchsetzt. Der Stab 4 ist mit zwei Bohrungen versehen, deren eine, 8, in seiner Achsrichtung verläuft und deren andere, 10, sich senkrecht zur ersten Bohrung erstreckt und dieselbe nahe des im Behälter- oder Rohrinneren befindlichen Stabendes kreuzt. Ein Ableitungsdraht 12 ist von außen durch die erste Bohrung 8 bis zur AnodenvorrichtungThe embodiment of the device according to the invention shown in FIG. 1 comprises a base or body in the form of a rod 4 made of insulating material, e.g. B. plastic, which is in the wall 6 of a container, Tube or the like inserted is unid the same penetrated. The rod 4 is provided with two holes whose one, 8, runs in its axial direction and the other, 10, extends perpendicular to the first bore and the same close to that in the container or pipe interior located rod end crosses. A drain wire 12 is from the outside through the first bore 8 to Anode device

zum kathodischen Schutzfor cathodic protection

der Innenwandungen von Hohlkörpernthe inner walls of hollow bodies

Anmelder:Applicant:

Engelhard Industries, Inc.,
Newark, N. J. (V. St. A.)
Engelhard Industries, Inc.,
Newark, NJ (V. St. A.)

Vertreter: Dr.-Ing. W. Abitz, Patentanwalt,
München 27, Gaußstr. 6
Representative: Dr.-Ing. W. Abitz, patent attorney,
Munich 27, Gaußstr. 6th

Beanspruchte Priorität:
V. St. v. Amerika vom 20. Mai 1957
Claimed priority:
V. St. v. America May 20, 1957

Walter F. Döring, Livingston, N. J. (V. St. Α.),
ist als Erfinder genannt worden
Walter F. Döring, Livingston, NJ (V. St. Α.),
has been named as the inventor

Schnittstelle der beiden Bohrungen und dann durch die Bohrung 10 radial in Richtung auf die Staboberfläche hin geführt. Das freie Ende 14 des Drahtes 12, welches den mit einer Flüssigkeit in Berührung kommenden Leiterteil (Anode) bildet, ist spiralförmig um den Stab 4 gewunden, und zwar erstreckt sich die Spirale in Richtung auf die Behälterwandung 6 zu (Fig. 1 und 2).Interface of the two bores and then through the bore 10 radially in the direction of the rod surface led there. The free end 14 of the wire 12, which comes into contact with a liquid Conductor part (anode) forms, is spirally wound around the rod 4, and that the spiral extends in the direction of the container wall 6 (Fig. 1 and 2).

Der zwischen den Bohrungen und dem Draht einerseits und in den keinen Draht enthaltenden Teilen der Bohrungen andererseits verbleibende Raum wird ausgefüllt, beispielsweise mit einem isolierenden Kunststoff, um einen flüssigkeitsidichten Abschluß zu erzielen. The between the bores and the wire on the one hand and in the parts that do not contain wire The remaining space is filled with holes on the other hand, for example with an insulating plastic, to achieve a liquid-tight seal.

Besonders günstig ist ein (ein- oder mehrdrähtiger) Draht aus Platin oder einer Platinlegierung, da er die Ableitung und die Anode in einem bildet und dadurch eine verläßliche, dauerhafte elektrische Verbindung erhalten wird, die sich zugleich leicht herstellen läßt.A (single or multi-stranded) wire made of platinum or a platinum alloy is particularly favorable, since it has the Conductor and the anode in one and thereby obtain a reliable, permanent electrical connection that is easy to manufacture at the same time.

Der Teil des Ableitungsdrahtes, der in dem Isolierstab 4 eingeschlossen ist oder ein Teil desselben kann aus einem unedlen Metall bestehen, wobei die Verbindung mit dem Draht aus Platin oder Platinlegierung an irgendeiner Stelle innerhalb des Stabes erfolgt.The part of the drain wire that goes into the insulation rod 4 is included or a part thereof may consist of a base metal, the compound with the platinum or platinum alloy wire anywhere within the rod.

Bei der in Fig. 3 gezeigten Ausführungsform der Erfindung ist der Stab 4 nicht mit einer Spirale (wie in Fig. 1 und 2), sondern mit einer Metallmuffe 16 umgeben, die mit dem Ende des Drahtes 12 an der Stelle leitend verbunden ist, an welcher er zur Staboberfläche gelangt. Der Draht wird in den Stab einge-In the embodiment of the invention shown in Fig. 3, the rod 4 is not provided with a spiral (such as in Fig. 1 and 2), but surrounded by a metal sleeve 16 which is connected to the end of the wire 12 at the Place is conductively connected, at which it comes to the rod surface. The wire is inserted into the rod

109539/537109539/537

schlossen, indem man die Zwischenräume zwischen dem Draht und den Wandungen der Bohrungen ausfüllt. Es kann ein Draht aus einem beliebigen geeigneten unedlen Metall Verwendung finden, während die Muffe 16, da sie die Anode bildet, aus Platin oder' einer Platinlegierung, vorzugsweise einem Drahtgewebe aus Platin oder Platinlegierung, besteht, um die Berührungsoberfläche zu vergrößern.closed by filling the spaces between the wire and the walls of the holes. A wire made of any suitable base metal can be used, while the Sleeve 16, since it forms the anode, made of platinum or a platinum alloy, preferably a wire mesh Platinum, or platinum alloy, is made to increase the surface area of contact.

Die Einfügung der ganzen Einheit durch die Wandung 6 des Behälters oder Rohres erfolgt mittels einer geeigneten Stopfbuchsendichtung üblicher Bauart.The entire unit is inserted through the wall 6 of the container or pipe by means of a suitable stuffing box seal of the usual type.

Claims (6)

Patentansprüche;Claims; 1. Anodenvorrichtung zum kathodischen Schutz der Innenwandungen von Hohlkörpern, insbesondere eines Rohres, deren metallische Wandungen mit Elektrolyten in Berührung kommen, gekennzeichnet durch einen Stab (4) aus Isolierstoff als Anodenträger, der durch die Wandung (6) des zu schützenden Körpers geführt ist, und einen von diesem Träger getragenen Metallkörper als Anode, deren Ableitung (12) in einer im wesentlichen axial verlaufenden Bohrung (8) durch den Anodenträger (4) hindurchgeführt ist, wobei der Zwischenraum zwischen den Wandungen der Bohrung (S) und der Ableitung (12) abgedichtet ist.1. Anode device for cathodic protection of the inner walls of hollow bodies, in particular a pipe, the metallic walls of which come into contact with electrolytes, characterized by a rod (4) made of insulating material as an anode carrier, which is guided through the wall (6) of the body to be protected, and a metal body carried by this carrier as the anode, the discharge line (12) of which is passed through the anode carrier (4) in a substantially axially extending bore (8), the space between the walls of the bore (S) and the discharge line (12 ) is sealed. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Stab (4) eine radial verlau fende und die axiale Bohrung (8) durchsetzende Bohrung (10) aufweist und die Ableitung (12) durch beide Bohrungen hindurchgeführt ist.2. Apparatus according to claim 1, characterized in that the rod (4) extends radially fende and the axial bore (8) penetrating bore (10) and the discharge line (12) is passed through both holes. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die radial verlaufende Bohrung (10) in der Nähe des freien Endes des Stabes (4) angeordnet ist,3. Apparatus according to claim 2, characterized in that the radially extending bore (10) is arranged in the vicinity of the free end of the rod (4), 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Anode von einer aus dem freien Ende der Ableitung (12) auf den Träger aufgewickelten Metallspirale (14) gebildet ist.4. Device according to one of claims 1 to 3, characterized in that the anode of a metal spiral (14) wound onto the carrier from the free end of the discharge line (12) is. 5. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das freie, aus dem Stab (4) hervorragende Ende der Ableitung (12) mit einem den Stab (4) umgebenden muffenartigen Metallkörper (16), insbesondere atis einem Drahtgewebe, als Anode verbunden ist.5. Device according to one of claims 1 to 3, characterized in that the free, from the rod (4) protruding end of the discharge line (12) with a sleeve-like surrounding the rod (4) Metal body (16), in particular atis one Wire mesh, connected as an anode. 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der durch den Stab (4) geführte Leiter, mindestens der aus dem Stab (4) hervorragende Teil, aus einem Platinmetall, einschließlich Legierungen der Platin metalle, insbesondere Platin, besteht.6. Device according to one of claims 1 to 5, characterized in that the through the Rod (4) guided conductor, at least the part protruding from the rod (4) made of a platinum metal, including alloys of platinum metals, especially platinum, is made. In Betracht gezogene Druckschriften:
Zt. »VDI«, 1954> S. 953,
Considered publications:
Currently »VDI«, 1954> p. 953,
Hierzu 1 Blatt Zeichnungen1 sheet of drawings © 109 539/537 3.61© 109 539/537 3.61
DEE15893A 1957-05-20 1958-05-19 Anode device for cathodic protection of the inner walls of hollow bodies Pending DE1104288B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US660205A US2908623A (en) 1957-05-20 1957-05-20 Anode

Publications (1)

Publication Number Publication Date
DE1104288B true DE1104288B (en) 1961-04-06

Family

ID=24648576

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE15893A Pending DE1104288B (en) 1957-05-20 1958-05-19 Anode device for cathodic protection of the inner walls of hollow bodies

Country Status (4)

Country Link
US (1) US2908623A (en)
DE (1) DE1104288B (en)
FR (1) FR1194987A (en)
GB (1) GB870086A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2340994A1 (en) * 1976-02-10 1977-09-09 Westfael Elekt Werke DEVICE, WITH EXTERNAL CURRENT ANODE, FOR CATHODIC PROTECTION AGAINST CORROSION

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996445A (en) * 1958-01-17 1961-08-15 Eisenberg Morris Corrosion inhibiting anode structure
NL246885A (en) * 1958-12-31 1900-01-01
US3019177A (en) * 1959-01-08 1962-01-30 Engelhard Ind Inc Cathodic protection anode assembly
US3056738A (en) * 1959-02-02 1962-10-02 Harry C Fischer Impressed current cathodic protection system
NL262016A (en) * 1960-03-07
US3104220A (en) * 1960-04-27 1963-09-17 Herman S Preiser Flexible trailing anode
US3135677A (en) * 1961-02-02 1964-06-02 Thermo Craft Electric Corp Durable anode protective system
US3409530A (en) * 1965-10-20 1968-11-05 Continental Oil Co Helical electrode
US3674675A (en) * 1970-07-09 1972-07-04 Frank H Leaman Platinized plastic electrodes
GB2046789B (en) * 1979-01-19 1983-01-26 Imi Marston Ltd Impressed current systems for cathodic protection
US4407711A (en) * 1979-11-02 1983-10-04 Texas Instruments Incorporated Corrosion protection system for hot water tanks
US4514278A (en) * 1983-01-14 1985-04-30 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Trace water sensor
CA1213246A (en) * 1983-09-06 1986-10-28 Tore C. Arnesen Electrostatic water treatment
CA1265094A (en) * 1986-08-27 1990-01-30 671135 Ontario Limited Electrostatic field generator for liquid treatment

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US806413A (en) * 1905-09-07 1905-12-05 Charles Edward Waithman Gaddum Electrode for electrolyzers used in the manufacture of bleaching liquors.
US1032295A (en) * 1911-04-11 1912-07-09 Gustav Politz Means for protecting pipes from the injurious action of electric currents.
US1489743A (en) * 1921-03-29 1924-04-08 Delius George Electrolytic terminal
US1506306A (en) * 1923-10-16 1924-08-26 Kirkaldy Engineering Corp Anode
US2215213A (en) * 1937-12-11 1940-09-17 Francis C Ellis Electrode for measuring electrolytic effects
US2416949A (en) * 1942-06-10 1947-03-04 Leeds & Northrup Co Cell for ph measurements
US2537061A (en) * 1946-02-23 1951-01-09 Wilbur M Kohring Resistance unit
US2826543A (en) * 1955-01-31 1958-03-11 Standard Magnesium Corp Mounting means for cathodic protection anodes

Non-Patent Citations (1)

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Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2340994A1 (en) * 1976-02-10 1977-09-09 Westfael Elekt Werke DEVICE, WITH EXTERNAL CURRENT ANODE, FOR CATHODIC PROTECTION AGAINST CORROSION

Also Published As

Publication number Publication date
FR1194987A (en) 1959-11-13
US2908623A (en) 1959-10-13
GB870086A (en) 1961-06-14

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