DE480996C - Device for the protection of metallic objects on ships against corrosion by stray currents - Google Patents
Device for the protection of metallic objects on ships against corrosion by stray currentsInfo
- Publication number
- DE480996C DE480996C DEC39459D DEC0039459D DE480996C DE 480996 C DE480996 C DE 480996C DE C39459 D DEC39459 D DE C39459D DE C0039459 D DEC0039459 D DE C0039459D DE 480996 C DE480996 C DE 480996C
- Authority
- DE
- Germany
- Prior art keywords
- currents
- objects
- protection
- stray currents
- against corrosion
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S138/00—Pipes and tubular conduits
- Y10S138/06—Corrosion
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)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
DEUTSCHES REICHGERMAN EMPIRE
19*19 *
indomindom
19291929
AUSGEGEBEN AM
12. AUGUST 1929ISSUED ON
AUGUST 12, 1929
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
KLASSE 48 d GRUPPECLASS 48 d GROUP
C 39459 vi\4#dC 39459 vi \ 4 # d
Tag der Bekanntmachung über die Erteilung des Patents: 25. JuliPatent notice date: July 25th
Elliott Cumberland in Kingston Hill, Engl.Elliott Cumberland in Kingston Hill, Engl.
Patentiert im Deutschen Reiche vom 4. März 1927 abPatented in the German Empire on March 4, 1927
Um in der Erde befindliche metallische Gegenstände, z. B. Rohrleitungen oder Kabel, insbesondere bei elektrischen Bahnanlagen mit Hilfe eines elektrischen Schutzstromkreises gegen Erdströme zu schützen, hat man bereits vorgeschlagen, die zu schützenden Gegenstände, gegebenenfalls über Widerstände, mit dem negativen Pol einer beliebigen Hilfselektrizitätsquelle, deren Aufgabe bei passender Schaltung aber auch die Hauptstromquelle mit übernehmen kann, und ein oder mehrere in die Erde gesenkte Anoden mit dem positiven Pol derselben Elektrizitätsquelle leitend zu verbinden.To metal objects located in the ground, e.g. B. pipelines or cables, especially in the case of electrical railway systems with the help of an electrical protective circuit to protect against earth currents, it has already been proposed that the objects to be protected, possibly via resistors, with the negative pole of any auxiliary electricity source, whose task, with the right circuit, can also take over the main power source, and one or more Anodes sunk into the earth are conductive with the positive pole of the same source of electricity connect to.
Diese Maßnahmen mögen zwar zur Erreichung jenes Zweckes genügen, reichen jedoch nicht hin, um einen zuverlässigen Schutz gegen Korrosion durch vagabundierende Ströme auch von solchen metallischen Gegenständen, die sich auf Schiffen befinden, wie Kesseln, Kondensatoren u. dgl., zu ergeben, weil dieser Schutz offenbar viel schwerer zu verwirklichen ist als der Schutz von in der Erde befindlichen metallischen Gegenständen gegen Erdströme.These measures may be sufficient to achieve that purpose, but they are sufficient not to provide reliable protection against corrosion caused by stray currents, even of such metallic objects, that are on ships, such as boilers, condensers and the like, because this protection is evidently much more difficult to achieve than the protection of in the Metallic objects located on the ground against earth currents.
Die Erdströme rühren nämlich meist von einer einzigen Dynamomaschine, einem einzigen Maschinensatz oder einer, einzigen Sammlerbatterie her, die das Bahn- bzw. Licht- und Kraftnetz speisen, wenn auch bisweilen daneben eine zweite Dynamomaschine, ein zweiter Maschinensatz oder eine zweite Sammlerbatterie als Ursache von Erdströmen in Frage kommen können. Auf Schiften hat man es aber regelmäßig mit einer beträchtliehen Anzahl verschiedener Stromquellen zu tun, die vagabundierende Ströme verursachen bzw. verursachen könnten und die zudem meist Ströme verschiedener Spannungen liefern. Ferner ist auf Schiffen die räumliche Entfernung der zu schützenden metallischen Gegenstände von diesen Stromquellen stets verhältnismäßig klein, und endlich bilden die vielen in das Schiff eingebauten Metallteile bzw. der eiserne Schiffskörper selbst gute Leiter für die vagabundierenden Ströme. Aus allen diesen Gründen treten also gerade auf Schiffen beim Fehlen wirksamer Schutzvorrichtungen die korrodierenden Wirkungen von vagabundierenden Strömen in ganz besonders starkem Maße auf, und es ist eine unbestreitbare Tatsache, daß die zum Schütze gegen sie bisher vorgeschlagenen Maßnahmen sich als unzureichend erwiesen haben.The earth currents mostly come from a single dynamo machine, a single one Machine set or a single collector battery here, which feed the rail or light and power network, albeit sometimes next to it a second dynamo machine, a second machine set or a second collector battery as the cause of earth currents can come into question. However, one has regularly borrowed a considerable amount of money on writings Number of different power sources to do that cause stray currents or could cause and which also mostly deliver currents of different voltages. Furthermore, the physical distance of the metallic ones to be protected on ships Objects from these power sources are always relatively small and finite many metal parts built into the ship or the iron hull itself is good Ladder for the stray currents. So all of these reasons just occur In the absence of effective protective devices, ships especially the corrosive effects of stray currents to a great extent, and it is an indisputable fact that the Sagittarius Measures proposed against them so far have proven inadequate.
Um auf .Schiffen befindliche metallische C iegenstände, wie Kessel, Kondensatoren u. dgl.,In order to use metallic objects on ships, such as boilers, condensers and the like,
Korrosion durch vagabundierende Ströme zuverlässig zu schützen, sind gemäß der Erfindung zunächst nicht nur alle Stromquellen, von denen ..es festgestellt ist, daß sie vagabundierende Ströme verursachen, sondern darüber hinaus auch noch alle Stromquellen, die solche Ströme möglicherweise verursachen könnten, mit ihren negativen Seiten an die zu schützenden Gegenstände anzuschließen. Es ίο ist nämlich sehr wohl möglich, daß eine Stromquelle, solange die elektrische Anlage noch neu und in gutem-Zustande ist, keine vagabundierenden Ströme verursacht, daß sie aber solche nach einiger Zeit verursacht, wenn z. B. ihre Isolierung allmählich nachläßt, oder aus anderen Gründen.Corrosion caused by stray currents must be reliably protected in accordance with of the invention initially not only all power sources, of which .. it is determined that they cause stray currents, but also all power sources, which could possibly cause such currents, with their negative sides to the too to connect protective objects. It ίο is very possible that a Power source, as long as the electrical system is new and in good condition, none stray currents, but after a while it causes such when z. B. their isolation gradually wears off, or for other reasons.
Ferner sind die positiven Seiten aller Stromquellen,, die vagabundierende Ströme verursachen bzw. verursachen könnten; an eine oder mehrere Elektroden anzulegen, die sich im Innern der zu schützenden Gegenstände befinden, jedoch gegen sie isoliert sind und iii einen Elektrolyten eintauchen.Furthermore, the positive sides of all current sources are, the stray currents cause or could cause; to apply to one or more electrodes that are inside the objects to be protected, but are insulated from them and iii immersing an electrolyte.
Endlich sind zu. beiden. Seiten der .Strom-· quellen in deren Verbindungen einerseits mit ilen zu schützenden metallischen Gegenständen, anderseits mit den Elektroden im Innern dieser Gegenstände Regelvorrichtungen, wie z. B. Regelwiderstände, vorzusehen. Der Grund für letztere Maßnahme besteht darin, daß die in Frage kommenden Stromquellen stets in einer größeren Anzahl vorhanden sind und meist Ströme verschiedener Spannung erzeugen. Infolgedessen muß dafür gesorgt werden, daß die den zu schützenden metalli-■sehen Gegenständen sowie den im Innern derselben befindlichen Elektroden zugeführten Spannungen ohne Rücksicht darauf, ob sie von der einen-oder anderen Stromquelle herstammen, stets gleich, sein müssen.Finally are closed. both. Pages of the .strom- swell in their connections on the one hand with metallic objects to be protected, on the other hand with the electrodes inside these objects control devices, such as. B. control resistors to be provided. Of the The reason for the latter measure is that the current sources in question are always present in a larger number and mostly currents of different voltages produce. As a result, it must be ensured that the metal to be protected ■ see Objects as well as the voltages applied to the electrodes inside the same, regardless of whether they come from one or the other power source, must always be the same.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1842541X | 1926-06-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE480996C true DE480996C (en) | 1929-08-12 |
Family
ID=10891788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEC39459D Expired DE480996C (en) | 1926-06-15 | 1927-03-04 | Device for the protection of metallic objects on ships against corrosion by stray currents |
Country Status (4)
Country | Link |
---|---|
US (1) | US1842541A (en) |
BE (1) | BE340855A (en) |
DE (1) | DE480996C (en) |
FR (1) | FR631946A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1149966B (en) * | 1959-06-22 | 1963-06-06 | Rolland Clifford Sabins | Corrosion protection system |
DE1156626B (en) * | 1956-08-06 | 1963-10-31 | Rolland Clifford Sabins | Arrangement for cathodic corrosion protection of bodies made of iron and steel by means of external current |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3146182A (en) * | 1959-08-25 | 1964-08-25 | Rolland C Sabins | Electrolytic system |
US3461051A (en) * | 1966-02-18 | 1969-08-12 | United States Steel Corp | Method and apparatus for protecting walls of a metal vessel against corrosion |
CH578624A5 (en) * | 1974-05-07 | 1976-08-13 | Caunned Ag | |
US4502929A (en) * | 1981-06-12 | 1985-03-05 | Raychem Corporation | Corrosion protection method |
US4990231A (en) * | 1981-06-12 | 1991-02-05 | Raychem Corporation | Corrosion protection system |
US4549949A (en) * | 1984-06-07 | 1985-10-29 | Outboard Marine Corporation | Marine propulsion device including cathodic protection |
US5505826A (en) * | 1994-11-30 | 1996-04-09 | Haglin; Patrick G. | Hydrophilic anode corrosion control system |
US7186327B1 (en) | 1997-09-30 | 2007-03-06 | Russell Larry L | Method and apparatus for scaling control and in-situ cathodic protection |
US6103097A (en) * | 1997-09-30 | 2000-08-15 | Russell; Larry L. | Method and apparatus for lead contamination control |
-
0
- BE BE340855D patent/BE340855A/xx unknown
-
1927
- 1927-03-04 DE DEC39459D patent/DE480996C/en not_active Expired
- 1927-03-12 US US174905A patent/US1842541A/en not_active Expired - Lifetime
- 1927-04-01 FR FR631946D patent/FR631946A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1156626B (en) * | 1956-08-06 | 1963-10-31 | Rolland Clifford Sabins | Arrangement for cathodic corrosion protection of bodies made of iron and steel by means of external current |
DE1149966B (en) * | 1959-06-22 | 1963-06-06 | Rolland Clifford Sabins | Corrosion protection system |
Also Published As
Publication number | Publication date |
---|---|
US1842541A (en) | 1932-01-26 |
BE340855A (en) | |
FR631946A (en) | 1927-12-29 |
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