FIELD: machine building.
SUBSTANCE: anode protectors are fitted directly at pipeline fittings shutoff valve and secured thereat by thread joint. Cathode is composed by pipe fittings shutoff element, pipe fittings drive shaft, rod or spindle and pipe fittings body. Pipeline fittings shutoff valve and anode protector are additionally connected by permanent or conditionally-plug-in metal joints in single electric circuit with total resistance for dry metal not over 0.1 Ohm. Anode protector material is selected subject to cathode material and concentration of chloride-ion in working medium so that algebraic difference Δφ of electrochemical cathode and anode potentials φk and φa satisfies the relationship: 0.4 V ≤ Δφ ≤ 0.5 V.
EFFECT: higher efficiency of protection.
18 cl, 2 dwg, 2 tbl
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR PROTECTING CURRENT-INSULATING CONNECTION OF TWO SECTIONS OF PIPELINE FROM INTERNAL CORROSION | 2023 |
|
RU2811225C1 |
METHOD FOR PROTECTION OF NONCONDUCTIVE CONNECTION OF TWO SECTIONS OF PIPELINE AGAINST INTERNAL CORROSION | 2014 |
|
RU2587735C2 |
METHOD FOR ELECTROCHEMICAL CORROSION PROTECTION OF SUBMERSIBLE EQUIPMENT IN A LIQUID MEDIUM | 2020 |
|
RU2749787C1 |
METHOD OF ROUTE SECTION PROTECTION AGAINST GEOMAGNETICALLY-INDUCED GROUND CURRENT AND DEVICE FOR ITS IMPLEMENTATION | 2017 |
|
RU2642141C1 |
CORROSION-RESISTANT MODULE OF PIPE LINE FOR SECTIONS AT INCREASED DYNAMIC LOADS | 0 |
|
SU1724731A1 |
DEVICE FOR METAL STRUCTURES ELECTROCHEMICAL PROTECTION AGAINST CORROSION | 1992 |
|
RU2019578C1 |
DEVICE FOR FIELD OIL PIPELINES PROTECTION AGAINST INTERNAL CORROSION | 2006 |
|
RU2339868C2 |
METHOD OF CATHODIC CORROSION PROTECTION OF INTERNAL SURFACES OF PIPE LINE FITTINGS AND DEVICE FOR REALIZATION OF THIS METHOD | 2004 |
|
RU2260072C1 |
METHOD AND DEVICE FOR CONTINUOUS CONTROL OF PITTING CORROSION OF METAL STRUCTURES INNER WALLS | 2017 |
|
RU2692118C2 |
ANTICORROSIVE PROTECTION METHOD FOR INNER AND OUTER SURFACES OF METAL PIPELINES BY ALTERNATING CURRENT APPLYING | 2012 |
|
RU2533467C2 |
Authors
Dates
2014-12-20—Published
2012-11-28—Filed