RU149241U1 - COPPER-SULPHATE NON-POLARIZING COMPARISON ELECTRODE FOR MEASURING CORROSION POTENTIALS OF INTERNAL SURFACES OF EQUIPMENT AND EQUIPMENT - Google Patents

Abstract

A copper-sulfate non-polarizable reference electrode for measuring the corrosion potentials of the internal surfaces of structures and equipment, comprising a dielectric cover, a copper case, a dielectric sleeve, a hermetic gasket, a steel sleeve, a bottom made of hydrophilic material, a dielectric horizontal-vertical gasket and a measuring wire, while the copper case and the dielectric sleeve, respectively, with external and internal threads are sealed with a sealant, and the bottom of the hydrophilic mat the rial protruding from the copper case in diameter equal to the outer diameter of the dielectric sleeve is connected to the copper case with a seal by means of a horizontal and vertical dielectric gasket, the dielectric sleeve and steel sleeve, respectively, are connected to the seal with external and internal threads by a sealant, while the test leads are connected to copper case, which is filled with granules of copper sulfate, moistened with distillate, and the copper case and dielectric cover, respectively, with the outer internal threads are interconnected.

Description

The utility model relates to the protection of metals from corrosion and to the determination of the values of the potentials of corrosion and protection, namely to the protection against corrosion of the internal surfaces of structures and equipment and can be used in a wide variety of industries, construction, utilities and agriculture.

Known non-polarizing copper-sulfate reference electrodes, consisting of the following elements: a copper body, a bottom of a hydrophilic material, a lid, copper sulphate and contact devices [1].

The disadvantages of the existing non-polarizing copper-sulfate reference electrodes are portable and they can be inserted into the inner surface of pipelines and tanks only in specially designed hatches and it is impossible to use them in structures and equipment working under pressure of liquids.

The technical result of the claimed utility model is to improve the quality of measurement of corrosion potentials and to protect the internal surfaces of structures and equipment operating under pressure and to eliminate the distortion of the potential value of the copper-sulfate reference electrode itself.

The technical result is achieved by the fact that a copper-sulfate non-polarizing reference electrode for measuring the corrosion potentials of the internal surfaces of structures and equipment, comprising a dielectric cover, a copper housing, a dielectric sleeve, a gasket, a steel sleeve, a bottom made of hydrophilic material, a dielectric horizontal vertical gasket and a measuring a wire, while the copper casing and the dielectric sleeve, respectively, with external and internal threads are connected with the possibility of sealing sealant, and the bottom of the hydrophilic material, protruding from the copper case in diameter equal to the outer diameter of the dielectric sleeve, is connected to the copper case with a seal by means of a horizontal and vertical dielectric gasket, the dielectric sleeve and the steel sleeve, respectively, are connected to the seal with the external and internal threads while the test leads are connected to a copper case, which is filled with granules of copper sulfate moistened with distillate, and the copper case and dielectric The cap is respectively interconnected with the external and internal threads.

In FIG. 1 shows a cross section of a copper-sulfate non-polarizable reference electrode for measuring the corrosion potentials of the internal surfaces of structures and equipment, where:

1 - dielectric cover;

2 - copper case;

3 - dielectric sleeve;

4 - hermetic gasket;

5 - steel coupling;

6 - bottom made of hydrophilic material (wood, ceramics, ion-exchange membrane, etc.);

7 - dielectric horizontal-vertical gasket;

8 - granules of pure copper sulfate moistened with distillate;

9 - wall of the structure;

10 - measuring wires;

11 - a protective coating.

Copper-sulfate non-polarizing reference electrode for measuring the corrosion potentials of the internal surfaces of structures and equipment works as follows. A hole with a diameter larger than the outer diameter of the dielectric sleeve 3 is cut out in the wall of the structure 9. Next, a steel sleeve 5 is welded to the wall of the structure from the outside and the dielectric sleeve 3 is screwed into it together with the copper body 2, which is filled with granules of pure copper sulfate moistened with distillate 8 . When mounting the reference electrode, it is necessary that the copper casing and the steel coupling, respectively, with the external and internal threads, be sealed together with a sealant, and be of such a length that the bottom deviates from the walls of the inner surface by an amount X equal to the maximum thickness of the protective coating (scaling) 11 on steel plus a 10 mm gap. When fluid is supplied to the structure, the potentials of corrosion and protection of the internal surface of the structure can be measured.

The efficiency of using the utility model lies in the fact that the quality of measuring the potentials of corrosion and protection of the internal surfaces of structures and equipment operating under pressure is increased and distortion of the potential value of the copper-sulfate electrode itself is eliminated.

The source of information:

1. Apletov V.V., Sinko V.F. Auth. St. USSR No. 1696586. A portable non-polarizing copper sulfate reference electrode. MKI C23F 13/00, 1986.

Claims (1)

A copper-sulfate non-polarizable reference electrode for measuring the corrosion potentials of the internal surfaces of structures and equipment, comprising a dielectric cover, a copper case, a dielectric sleeve, a hermetic gasket, a steel sleeve, a bottom made of hydrophilic material, a dielectric horizontal-vertical gasket and a measuring wire, while the copper case and the dielectric sleeve, respectively, with external and internal threads are sealed with a sealant, and the bottom of the hydrophilic mat the rial protruding from the copper case in diameter equal to the outer diameter of the dielectric sleeve is connected to the copper case with a seal by means of a horizontal and vertical dielectric gasket, the dielectric sleeve and steel sleeve, respectively, are connected to the seal with external and internal threads by a sealant, while the test leads are connected to copper case, which is filled with granules of copper sulfate, moistened with distillate, and the copper case and dielectric cover, respectively, with the outer internal threads are interconnected.

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