GB817120A - Method and means for the cathodic protection of tanks filled with sea water - Google Patents
Method and means for the cathodic protection of tanks filled with sea waterInfo
- Publication number
- GB817120A GB817120A GB21437/57A GB2143757A GB817120A GB 817120 A GB817120 A GB 817120A GB 21437/57 A GB21437/57 A GB 21437/57A GB 2143757 A GB2143757 A GB 2143757A GB 817120 A GB817120 A GB 817120A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- anode
- tank
- cavity
- 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
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
Abstract
817,120. Preventing corrosion. RISBERG,. E. July 5, 1957 [July 5, 1956], No. 21437/57. Class 123(1) In an oil tanker vessel a tank 1 which is filled with sea water ballast is protected from corrosion by an impressed current anode 2 suspended therein and supplied with current through a cable 11. The anode is assembled from a number of annular sections 3 of graphite stacked inside a tight-fitting perforated sleeve 4 of insulating material such as polyvinyl chloride. The cylindrical cavity 5 formed inside the stack is closed at both ends by covers. A pipe 7 extending to the bottom of the cavity passes through the top cover and is connected to one section of a double pump 8 which withdraws water from the cavity, the water having passed on to the cavity through a filter 14 enclosing the anode and preventing access of suspended particles thereto, through perforations 9 in the sleeve 4 and between the sections 3. The :cavity may be vented to atmosphere or connected with a vacuum source by a conduit 10. To maintain the full level in the tank, the volume of seat water withdrawn is replaced by the other section of the pump 8 which delivers the water through a pipe 12 to the region immediately surrounding the anode through nozzles 13, thus preventing the oxygen contained in the make-up water from being distributed in the ballast. The flow of water into the anode and thence from the tank removes from the latter harmful and corrosive anode products such as chlorine and oxygen before they come into contact with the tank walls and prevents accumulations of gas in the tank top with consequent explosion hazards. When oil is loaded into the tank the anode may be removed. If, however, it is to be permanently mounted the supply cable 11 and conduits 7, 10, 12 are housed in a single tube, 15, Fig. 2, on which slides a bell cover 16. The cover has a float chamber 17 of such size that the cover floats in water but sinks in oil. When the sea-water ballast is removed from the tank the cover drops to enclose and protect the anode and remains in this position when the tank is filled with oil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO817120X | 1956-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB817120A true GB817120A (en) | 1959-07-22 |
Family
ID=19907174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21437/57A Expired GB817120A (en) | 1956-07-05 | 1957-07-05 | Method and means for the cathodic protection of tanks filled with sea water |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2976226A (en) |
| GB (1) | GB817120A (en) |
| MY (1) | MY6300098A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3355370A (en) * | 1964-01-15 | 1967-11-28 | Jr Hugh M Baker | Cathodic protection method and apparatus |
| US3241512A (en) * | 1964-02-12 | 1966-03-22 | William G Green | Anti-fouling, barnacles, algae, eliminator |
| US3488275A (en) * | 1967-05-11 | 1970-01-06 | Kaiser Aluminium Chem Corp | Cathodic protection system |
| US4013538A (en) * | 1971-12-22 | 1977-03-22 | General Electric Company | Deep submersible power electrode assembly for ground conduction of electricity |
| CN102586784B (en) * | 2012-03-14 | 2013-08-14 | 中国海洋石油总公司 | Method for assembling direct current cathode protection system outside platform |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US872759A (en) * | 1907-10-09 | 1907-12-03 | Pittsburgh Electrolytic Mfg Company | Electrolytic ship-bottom protector. |
| GB173418A (en) * | 1919-04-12 | 1922-01-05 | Ludwig Renger | Method for the prevention of corrosion and the formation of fur in steam boilers, condensers and the like |
| GB154610A (en) * | 1919-04-12 | 1921-11-24 | Ludwig Renger | A method of preventing corrosion and the formation of scale in steam boilers, condensers and the like |
| US1335209A (en) * | 1919-06-07 | 1920-03-30 | Escher Wyss Maschf Ag | Process for the prevention of selective corrosion of tubes and machinery parts of copper or copper containing alloys |
| US1335210A (en) * | 1919-06-11 | 1920-03-30 | Escher Wyss Maschf Ag | Method and device for the prevention of selective corrosion of tubes and machinery parts of copper or copper containing alloys |
| US2273798A (en) * | 1939-10-31 | 1942-02-17 | Nat Carbon Co Inc | Electrolytic process |
| US2358419A (en) * | 1942-07-25 | 1944-09-19 | Nat Carbon Co Inc | Electrode for use in electrolytic processes |
| US2504238A (en) * | 1945-07-13 | 1950-04-18 | Int Nickel Co | Anode assembly |
| BE504585A (en) * | 1950-07-12 | |||
| FR1112228A (en) * | 1954-10-05 | 1956-03-09 | Condensation Application Mec | Process and devices for protecting metals in contact with an electrolyte, against corrosion, scaling and the formation of deposits of various substances liable to promote corrosion |
-
1957
- 1957-07-05 GB GB21437/57A patent/GB817120A/en not_active Expired
- 1957-07-05 US US670259A patent/US2976226A/en not_active Expired - Lifetime
-
1963
- 1963-12-31 MY MY196398A patent/MY6300098A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MY6300098A (en) | 1963-12-31 |
| US2976226A (en) | 1961-03-21 |
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