GB1046819A - Method of and automatic installation for cathodic protection of buried metallic pipe-lines - Google Patents

Method of and automatic installation for cathodic protection of buried metallic pipe-lines

Info

Publication number
GB1046819A
GB1046819A GB4414964A GB4414964A GB1046819A GB 1046819 A GB1046819 A GB 1046819A GB 4414964 A GB4414964 A GB 4414964A GB 4414964 A GB4414964 A GB 4414964A GB 1046819 A GB1046819 A GB 1046819A
Authority
GB
United Kingdom
Prior art keywords
cathodic protection
pulses
oct
lines
sensing electrode
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
GB4414964A
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.)
DEPUTY MINISTER OF MINISTERUL
Original Assignee
DEPUTY MINISTER OF MINISTERUL
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 DEPUTY MINISTER OF MINISTERUL filed Critical DEPUTY MINISTER OF MINISTERUL
Publication of GB1046819A publication Critical patent/GB1046819A/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

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)
  • Amplifiers (AREA)

Abstract

1, 046, 819. Automatic control systems for cathodic protection. RUMANIA, MINISTERUL INDUSTRIEI PETROLULUI SI CHIMIEI. Oct. 29, 1964 [Oct. 30, 1963], No. 44149/64. Heading G3R. In a cathodic protection system, a control circuit is arranged to produce current pulses the mark/space ratio of which is controlled in dependence upon an error signal obtained by comparing the potential of a sensing electrode with a reference voltage derived from a Zener diode. These pulses are applied over a transistorised amplifier and an integrating stage to a sacrificial anode associated with the structure being protected. The protecting current is thus automatically controlled so that the potential detected by the sensing electrode is maintained at the reference value. Suitable arrangements of oscillators, amplifiers and trigger circuits for producing the pulses are described with reference to Figs. 2, 5 and 6 (not shown) which illustrate, in block diagram form, three different embodiments.
GB4414964A 1963-10-30 1964-10-29 Method of and automatic installation for cathodic protection of buried metallic pipe-lines Expired GB1046819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO4705363 1963-10-30

Publications (1)

Publication Number Publication Date
GB1046819A true GB1046819A (en) 1966-10-26

Family

ID=20086420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4414964A Expired GB1046819A (en) 1963-10-30 1964-10-29 Method of and automatic installation for cathodic protection of buried metallic pipe-lines

Country Status (3)

Country Link
AT (1) AT246831B (en)
DE (1) DE1450367A1 (en)
GB (1) GB1046819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622489A (en) * 1968-09-25 1971-11-23 Institutual De Cercetari Si Pr Cathodic protection system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH638899A5 (en) * 1978-02-10 1983-10-14 Bbc Brown Boveri & Cie Device for monitoring the corrosion of metallic pipes having a corroding medium flowing through them

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622489A (en) * 1968-09-25 1971-11-23 Institutual De Cercetari Si Pr Cathodic protection system

Also Published As

Publication number Publication date
DE1450367A1 (en) 1970-07-23
AT246831B (en) 1966-05-10

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