GB669675A - Improvements relating to apparatus for the electrolytic prevention of corrosion of metallic underground structures - Google Patents

Improvements relating to apparatus for the electrolytic prevention of corrosion of metallic underground structures

Info

Publication number
GB669675A
GB669675A GB2818249A GB2818249A GB669675A GB 669675 A GB669675 A GB 669675A GB 2818249 A GB2818249 A GB 2818249A GB 2818249 A GB2818249 A GB 2818249A GB 669675 A GB669675 A GB 669675A
Authority
GB
United Kingdom
Prior art keywords
transformer
reactor
electrolytic
corrosion
prevention
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
Application number
GB2818249A
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
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
Priority to NL6811205.A priority Critical patent/NL156560B/en
Priority to NL74280D priority patent/NL74280C/xx
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB2818249A priority patent/GB669675A/en
Priority to DEW4252A priority patent/DE843638C/en
Priority to FR1026243D priority patent/FR1026243A/en
Publication of GB669675A publication Critical patent/GB669675A/en
Expired 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
    • C23F13/04—Controlling or regulating desired parameters

Abstract

669,675. Protective arrangements. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., STEVENS, S. A., and WATSON, T. F. E. Sept. 12, 1950 [Nov. 3, 1949], No. 28182/49. Class 38 (iv). In a system for the electrolytic prevention of corrosion of a buried pipe 1, or the like, of the kind in which a D.C. potential is maintained between the pipe and a buried electrode 2, the potential is obtained from A.C. mains 11 over a transformer 9 and full-wave rectifier 4 and is regulated by a D.C.-controlled reactor 12 having its A.C. windings 13 in the primary circuit of the transformer. Current for the control windings 14 of the reactor is obtained, over a full-wave rectifier 17 and transformer 21, from the mains 11 through an adjustable autotransformer 22. The reactor 12 causes the current flow between the pipe and electrode to be largely independent of the soil resistance. A swamp resistance may be associated with the transformer 21 or the reactor winding 14 to reduce the effect of temperature variations on the current strength in the control circuit.
GB2818249A 1949-11-03 1949-11-03 Improvements relating to apparatus for the electrolytic prevention of corrosion of metallic underground structures Expired GB669675A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL6811205.A NL156560B (en) 1949-11-03 QUATERNARY COMMUNICATION SYSTEM WITH DIFFERENTIAL PHASE MODULATION.
NL74280D NL74280C (en) 1949-11-03
GB2818249A GB669675A (en) 1949-11-03 1949-11-03 Improvements relating to apparatus for the electrolytic prevention of corrosion of metallic underground structures
DEW4252A DE843638C (en) 1949-11-03 1950-10-06 Device for the protection of metallic components laid in the ground against electrolytic corrosion
FR1026243D FR1026243A (en) 1949-11-03 1950-10-17 Apparatus for electrolytically preventing corrosion of buried metal objects such as petroleum oil pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2818249A GB669675A (en) 1949-11-03 1949-11-03 Improvements relating to apparatus for the electrolytic prevention of corrosion of metallic underground structures

Publications (1)

Publication Number Publication Date
GB669675A true GB669675A (en) 1952-04-09

Family

ID=10271574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2818249A Expired GB669675A (en) 1949-11-03 1949-11-03 Improvements relating to apparatus for the electrolytic prevention of corrosion of metallic underground structures

Country Status (4)

Country Link
DE (1) DE843638C (en)
FR (1) FR1026243A (en)
GB (1) GB669675A (en)
NL (2) NL74280C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963413A (en) * 1959-01-12 1960-12-06 Rolland C Sabins Electrolytic system
US2987461A (en) * 1958-12-19 1961-06-06 Rolland C Sabins Control system and method
US2998371A (en) * 1958-05-09 1961-08-29 Bruce Dohrmann Control system
US3004905A (en) * 1959-02-09 1961-10-17 Rolland C Sabins Cathodic protection system
US3055813A (en) * 1958-11-17 1962-09-25 Pure Oil Co Current controller for use in cathodic protection of steel structures
US3113093A (en) * 1959-02-03 1963-12-03 Engelhard Ind Inc Cathodic protection system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1132407B (en) * 1955-09-19 1962-06-28 Quante Wilhelm Circuit arrangement for cathodic protection of metallic components in the ground or in water

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998371A (en) * 1958-05-09 1961-08-29 Bruce Dohrmann Control system
US3055813A (en) * 1958-11-17 1962-09-25 Pure Oil Co Current controller for use in cathodic protection of steel structures
US2987461A (en) * 1958-12-19 1961-06-06 Rolland C Sabins Control system and method
US2963413A (en) * 1959-01-12 1960-12-06 Rolland C Sabins Electrolytic system
US3113093A (en) * 1959-02-03 1963-12-03 Engelhard Ind Inc Cathodic protection system
US3004905A (en) * 1959-02-09 1961-10-17 Rolland C Sabins Cathodic protection system

Also Published As

Publication number Publication date
DE843638C (en) 1952-07-10
NL156560B (en)
NL74280C (en)
FR1026243A (en) 1953-04-24

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