C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 13/02 (2006.01) C23F 13/04 (2006.01) E21B 41/02 (2006.01) F16L 58/00 (2006.01) H02H 7/00 (2006.01)
Patent
CA 2323682
A cathodic protection system for protecting buried conducting structures, subject to corrosion such as well casings, pipe lines and the like, utilizes a plurality of pulsed D.C. current sources with the negative output terminal of each source connected to a separate structure and the positive output terminal of the sources connected to a common anode located near the structures. A control circuit synchronizes the operation of the several D.C. sources and sets the frequency and width of the output pulses. The amplitude of the output pulses from each D.C. source may be separately adjusted.
L'invention concerne un système de protection cathodique pour protéger des structures conductrices, assujetties à la corrosion, comme les tubages de puits, les pipelines, etc. Le système utilise une pluralité de sources de courant continu pulsé, le terminal de sortie négative de chaque source étant branché à une structure distincte et le terminal de sortie positive des sources étant branché à une anode commune située près des structures. Un circuit de contrôle synchronise le fonctionnement de plusieurs des sources de courant continu et établit la fréquence et la largeur des pulsions de sortie. L'amplitude des pulsions de sortie de chaque source de courant continu pourrait être ajustée de façon distincte.
Doniguian Thaddeus M.
Gowling Lafleur Henderson Llp
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