DE1003069B - Device for protecting the tank walls on oil tankers - Google Patents
Device for protecting the tank walls on oil tankersInfo
- Publication number
- DE1003069B DE1003069B DEH19888A DEH0019888A DE1003069B DE 1003069 B DE1003069 B DE 1003069B DE H19888 A DEH19888 A DE H19888A DE H0019888 A DEH0019888 A DE H0019888A DE 1003069 B DE1003069 B DE 1003069B
- Authority
- DE
- Germany
- Prior art keywords
- anodes
- iron
- per
- plates
- auxiliary
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 37
- 229910052742 iron Inorganic materials 0.000 claims description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 239000011777 magnesium Substances 0.000 claims description 6
- 239000003351 stiffener Substances 0.000 claims description 6
- 239000010405 anode material Substances 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- 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
-
- 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
- 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
- C23F13/18—Means for supporting electrodes
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 bezieht sich auf den elektrolytischen Schutz der Tankwände auf öltankschiffen gegen Korrosion. Nach der Erfindung werden sich aufbrauchende Magnesiumanoden verwendet, wie sie zum Schutz von Schdffswan-dungen bereits bekannt sind..The invention relates to the electrolytic protection of the tank walls on oil tankers against corrosion. According to the invention will be consuming Magnesium anodes are used, as they are already known for the protection of Schdffswan-dungen ..
Die Tanks auf öltankschiffen werden in der Ballastfahrt gewöhnlich mit Seewasser gefüllt, während sie in der übrigen Zeit leer sind oder eine ölfüllung haben. Hierbei besteht eine beträchtliche Neigung der Tanks zu korrodieren. Wenn man diese Tanks mit sich aufbrauchenden Anoden, versieht, ist es erwünscht, daß im Anfang ein genügend hoher Strom entwickelt wird, während dann, wenn der Tankaufbau polarisiert wird, wesentlich weniger Strom nötig ist. Es ist daher wünschenswert, Hauptanoden vorzusehen, die ein großes Volumen im Verhältnis zu ihrer Oberfläche haben und Hilfsanoden, die nur ein kleines Volumen im Verhältnis zu ihrer Oberfläche aufweisen und die den benötigten hohen· Strom im Anfang liefern und die während, der Anfangsperiode des Betriebes aufgebraucht werden.The tanks on oil tankers are in the Ballast travel usually filled with seawater, while the rest of the time they are empty or an oil filling to have. There is a considerable tendency for the tanks to corrode. If you have this Tanks with consumable anodes, it is desirable that in the beginning a sufficiently high current is developed, while if the tank structure is polarized, much less electricity is required. It is therefore desirable to provide main anodes that have a large volume in relation to their surface area have and auxiliary anodes that only have a small volume in relation to their surface area and which initially deliver the required high current and which are used up during the initial period of operation.
Gemäß der Erfindung sind mit den zu schützenden Bauteilen leitend, verbundene, an sich bekannte Magnesiumanoden vorgesehen, und zwar in Form von Hauptanoden und Hilfsanoden. Letztere sind von geringerem Volumen im Verhältnis zur Oberfläche als die Hauptanoden,. Die Hilfsanoden bestehen aus tellerförmigen Platten. Die Platten sind auf Eisenstangen aufgereiht befestigt, die sich über den größeren Teil der Tankhöhe erstrecken und in Abständen voneinander entlang der Tankwand und in deren· Nähe angeordnet sind. Jed'e Eisenstange trägt eine Mehrzahl von Platten, wobei jede Platte in einer anderen Höhe angeordnet ist.According to the invention, magnesium anodes which are known per se are conductive, connected to the components to be protected provided, namely in the form of main anodes and auxiliary anodes. The latter are of lesser magnitude Volume in relation to the surface area as the main anodes. The auxiliary anodes consist of plate-shaped Plates. The plates are lined up and fastened to iron bars that extend over the greater part of the tank height extend and are arranged at a distance from one another along the tank wall and in the vicinity thereof. Each iron bar supports a plurality of plates, each plate being at a different height.
Die Anoden bestehen, wie erwähnt, aus Magnesium oder einer Legierung auf Magnesiumbasis, beispielsweise
aus einer Magnesiumlegierung mit 2 bis 7% Aluminium und/oder 1 bis 4% Zink, gegebenenfalls
mit einem Zusatz von. 0,01 bis 0,4% Mangan·. Die Hilfsanoden können gegossene Platten, von 35 bis
70 cm Durchmesser und einer Stärke von 10 bis 20 mm sein. Diese Gußplatten haben in der Mitte eine Verstärkung
mit einer Öffnung zur Aufnahme einer geschlitzten, eisernen Hülse, die auf der Eisenstange
gleitet und die auf dieser Eisenstange durch eine Klammer festgeklemmt wird, die den geschlitzten Teil
der Hülse umgreift. Es kann jedoch auch eine Hülse verwendet werden, die nicht geschlitzt ist und die an
der Stange angeschweißt wird. Die Hilfsanoden können eine Fläche von 0,027 bis 0,18 m2 pro kg Metall
(vorzugsweise 0,062 bis 0,125 m2 pro kg) haben. Sie sind nahe der Wandung des Tanks angeordnet, haben
jedoch mindestens einen Abstand von 15 cm. Die Hauptanoden können mit in das Anodenmetall eingegossenen
Eisenstangen hergestellt sein, die an den Einrichtung zum Schutz der Tank wände
auf Öltanks chiffenAs mentioned, the anodes consist of magnesium or a magnesium-based alloy, for example a magnesium alloy with 2 to 7% aluminum and / or 1 to 4% zinc, optionally with an addition of. 0.01 to 0.4% manganese ·. The auxiliary anodes can be cast plates, 35 to 70 cm in diameter and 10 to 20 mm thick. These cast plates have a reinforcement in the middle with an opening for receiving a slotted iron sleeve which slides on the iron rod and which is clamped on this iron rod by a clamp which engages around the slotted part of the sleeve. However, a sleeve which is not slotted and which is welded to the rod can also be used. The auxiliary anodes can have an area of 0.027 to 0.18 m 2 per kg of metal (preferably 0.062 to 0.125 m 2 per kg). They are arranged close to the wall of the tank, but are at least 15 cm apart. The main anodes can be made with iron rods cast in the anode metal, which are attached to the tank walls to protect the equipment
ship on oil tanks
Anmelder:
F. A. Hughes & Co. Limited, LondonApplicant:
FA Hughes & Co. Limited, London
Vertreter: Dipl.-Ing. F. WeickmannRepresentative: Dipl.-Ing. F. Weickmann
und Dr. A. Weickmann, Patentanwälte,and Dr. A. Weickmann, patent attorneys,
München 2, Brunnstr. 8/9Munich 2, Brunnstr. 8/9
William Godfrey WaiteWilliam Godfrey Waite
und William Frederick Higgins, London,and William Frederick Higgins, London,
sind als Erfinder genannt wordenhave been named as inventors
Deckträgern des Tanks angeschraubt sind. Die Hauptanoden haben weniger als 0,02 m2 Oberfläche pro kg Anodenmaterial, beispielsweise 0,007 bis, 0,015 m2 pro kg, vorzugsweise jedoch 0,009 bis 0,013 m2 pro kg. Im folgenden werden Ausführungsbeispiele der Erfindung an Hand der Zeichnungen beschrieben. Es ist Fig. 1 die Innenansicht des Tanks eines öltanksohiffes, wobei die Vorderwand teilweise weggebrochen gezeichnet ist;Deck girders of the tank are screwed. The main anodes have less than 0.02 m 2 surface area per kg of anode material, for example 0.007 to 0.015 m 2 per kg, but preferably 0.009 to 0.013 m 2 per kg. In the following, exemplary embodiments of the invention are described with reference to the drawings. 1 is an interior view of the tank of an oil tanker, with the front wall shown partially broken away;
Fig. 2 bis 6 sind vergrößerte Darstellungen von. in Fig. 1 gezeigten Teilen;FIGS. 2 through 6 are enlarged views of FIG. parts shown in Fig. 1;
Fig. 7 ist ein, Grundriß des Tankinneren.Fig. 7 is a plan view of the interior of the tank.
Der Tank, dessen Inneres in der Fig. 1 dargestellt ist, hat Schotten 10 mit vertikal verlaufenden Versteifungen 11 und horizontalen Versteifungen 12. Das Deck 13 ruht auf Trägern 18. Ein Mannloch 14 ermöglicht den Zugang zu einer Eisenitreppe 15. Der Boden 16 ist durch Träger 17 versteift.The tank, the interior of which is shown in FIG. 1, has bulkheads 10 with vertically extending stiffeners 11 and horizontal stiffeners 12. The deck 13 rests on girders 18. A manhole 14 allows access to an iron staircase 15. The floor 16 is stiffened by carrier 17.
Die Hauptanoden 20 sind an den Trägern 17 befestigt und in Abständen über den Boden verteilt, wie dies aus der Fig. 7 ersichtlich ist. Diese Hauptanoden haben die Form einer Halbkugel, in die eine Eisenstange 21 mit einer Ankerplatte 22 sowie einem Ring 23 an dem oberen Ende der Eisenstange, um das Ganze leicht handhaben zu können (Fig. 4), eingegossen ist. Das untere, aus der Anode herau&ragende Ende der Eisenstange trägt ein Gewinde 24 für die Muttern 25 und 26, um die Anode an dem Träger 17 befestigen zu können.The main anodes 20 are attached to the beams 17 and spaced over the floor, such as this can be seen from FIG. 7. These main anodes have the shape of a hemisphere with an iron rod inside 21 with an anchor plate 22 and a ring 23 at the upper end of the iron rod to complete the whole easy to handle (Fig. 4), is cast. The lower end of the Iron rod carries a thread 24 for the nuts 25 and 26 to fasten the anode to the support 17 can.
Zwei oder drei Sätze von Hilfsanodenplatten 28 sind, wie man, aus Fig. 7 erkennen kann, vertikal in Abständen, an jeder Tankwand angeordnet.Two or three sets of auxiliary anode plates 28, as can be seen from Fig. 7, are vertical in Intervals, arranged on each tank wall.
609 8Ϊ5/76609 8Ϊ5 / 76
Die längs der Wand angeordneten Sätze sitzen an den horizontalen Versteifungen 12. Die Platten 28 sind an einer Eisenstaixge 30 (Fig. 5 und 6) befestigt, die an ihrem oberen Ende umgebogen ist und in ein Loch 31 in den Deckträger 18 eingreift. Die Eisenstange· geht durch eine geschlitzte Hülse 34 hinduirch, die in der Verdickung 32 in der Mitte der Anodenplatte sitzt. Die Hülse 34 wird an den Platten. 28 mit Hilfe von Muttern 33 gehalten und durch Klammern 35 an der Eisenstange 30 befestigt. Die übrigen Platten sind in gleicher Weise festgemacht. Das untere Ende der Eisenstange wird durch eine Klammer 37 an einem Stab 36 angeklammert, der wiederum an der Versteifung 12 angeschweißt ist. Die folgenden, tiefer liegenden Platten des gleichen Satzes werden in ähnlicher Weise an einer Eisenstange 40 befestigt, die bei 41 umgebogen, ist und über die Kante der Versteifung 12 übergreift. Mit Hilfe einer Klammer 42 ist die Eisenstange 40 mit der Eisenstange 30 zusammengeklammert. Es kann eine beliebige Anzahl von Stangen 30 und 40 verwendet werden, um ein Stangensystem zum Tragen dieser Platten zu schaffen. Die unterste Stange wird durch eine Klammer 44 an der kurzen Stange 43 (Fig. 3) angeklemmt, die an dem Träger 17 angeschweißt ist.The sets arranged along the wall sit on the horizontal stiffeners 12. The panels 28 are attached to a Eisenstaixge 30 (Fig. 5 and 6), the is bent at its upper end and engages in a hole 31 in the deck support 18. The iron bar goes through a slotted sleeve 34 hinduirch, which in the thickening 32 sits in the middle of the anode plate. The sleeve 34 is attached to the plates. 28 with the help of Nuts 33 are held and fastened to the iron rod 30 by brackets 35. The remaining panels are in moored in the same way. The lower end of the iron rod is held by a bracket 37 on a Clamped to rod 36, which in turn is welded to reinforcement 12. The following, deeper ones Plates of the same set are similarly attached to an iron bar 40 indicated at 41 is bent over and over the edge of the stiffener 12 overlaps. The iron rod 40 is clamped together with the iron rod 30 with the aid of a clamp 42. Any number of rods 30 and 40 can be used to form a rod system Wear these panels to create. The bottom bar is attached to the short bar 43 by a clamp 44 (Fig. 3), which is welded to the carrier 17.
Die Anodensätze, die entlang der anderen Wände angeordnet sind, können in ähnlicher Weise mit Hilfe von Armen 46 befestigt werden, die an die Wandungen 10 angeschweißt sind. Sie haben die gleiche Aufgabe, das Stangensystem zu tragen, wie die Versteifungen. 12.The anode sets, which are arranged along the other walls, can similarly with the help are attached by arms 46 which are welded to the walls 10. They have the same task to carry the pole system as well as the stiffeners. 12th
Claims (4)
Mas. Engineering, August 1953, S. 150.Considered publications:
Mas. Engineering, August 1953, p. 150.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH19888A DE1003069B (en) | 1952-08-05 | 1954-04-05 | Device for protecting the tank walls on oil tankers |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19679/52A GB721712A (en) | 1952-08-05 | 1952-08-05 | Improvements in or relating to the cathodic protection of metallic structures against corrosion |
| DEH19888A DE1003069B (en) | 1952-08-05 | 1954-04-05 | Device for protecting the tank walls on oil tankers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1003069B true DE1003069B (en) | 1957-02-21 |
Family
ID=25979370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEH19888A Pending DE1003069B (en) | 1952-08-05 | 1954-04-05 | Device for protecting the tank walls on oil tankers |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1003069B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1088382B (en) | 1955-12-14 | 1960-09-01 | Ingenjoers N Sune Rygaard Fa | Anode body for protection against corrosion |
-
1954
- 1954-04-05 DE DEH19888A patent/DE1003069B/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1088382B (en) | 1955-12-14 | 1960-09-01 | Ingenjoers N Sune Rygaard Fa | Anode body for protection against corrosion |
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