RU238136U1 - Portable non-polarizable copper sulfate reference electrode with vibration stabilization - Google Patents

Abstract

The utility model relates to electrometric corrosion survey techniques for underground pipelines, for measuring the electrochemical potentials of underground metal structures (hereinafter, "potential"), and can be used in the gas, oil, and related industries. A portable copper sulfate reference electrode with vibration stabilization comprises: a copper rod, a dielectric housing, a saturated copper sulfate solution, an ion-exchange membrane, a rod, a handle, power supply wires, a measuring wire, a power supply element, a button, and a vibration-generating device. The essence of the claimed utility model is that a vibration-generating device is built into the portable copper sulfate reference electrode, which reduces the concentration polarization of the copper rod of the electrode, the electrical resistance of the ion-exchange membrane, and its transient electrical resistance upon contact with the ground. 1 Fig.

Description

The field of technology to which the utility model belongs

The utility model relates to the technique of electrometric corrosion surveys of underground pipelines for measuring the electrochemical potentials of underground metal structures (hereinafter referred to as potential) and can be used in the gas, oil and related industries.

State of the art

A portable copper sulfate reference electrode, type EMS-1.2, is known for its ability to perform measurements in various soils [Developer: Khimservis CJSC, official website: https://www.khimservis.com]. The electrode includes a copper rod, a dielectric housing, a saturated copper sulfate solution, replaceable ion-exchange membranes, a rod, a handle, and a measuring cable.

The disadvantage of the portable copper sulfate reference electrode type EMS-1.2 is the unstable measurement error in field conditions.

A portable non-polarizable copper sulfate reference electrode, type ZGANS GES-MS-P, is known [Developer: Gas Equipment Plant NS LLC, official website: https://www.enes26.ru]. The electrode comprises a copper rod, a dielectric housing, a gel-like electrolyte, an ion-exchange membrane, a rod, a handle, and a measuring lead.

The disadvantage of the portable copper sulfate reference electrode type ZGANS GES-MS-P is the high contact resistance between the ion-exchange membrane and the soil, and unstable measurement error in field conditions.

In high-resistivity, sandy, and dusty soils, when measuring the potential of underground metal structures with a portable copper sulfate reference electrode using the remote electrode method or the potential gradient method of electric currents in the soil, an unstable error occurs due to the high contact resistance between the ion-exchange membrane and the soil. To reduce the contact resistance, the area of the ion-exchange membrane is increased, its thickness is reduced, or the soil at the location of the reference electrode is moistened [Methods of Monitoring and Measurements in the Protection of Underground Structures from Corrosion. Moscow: Nedra, 1978, Glazov, N.P., Strizhevsky, I.V., Kalashnikova, A.M., et al.].

The closest analogue, accepted as a prototype, is a portable reference electrode of the K.M.S. 265 010 Stabbezugsclcktrode type with a device of the K.M.S. 265 203 Schwammaufsatz-Set type [Developer KORUP, Germany, official website https://www.korupp-kks.com].

The electrode includes a copper rod, a dielectric body, a saturated copper sulfate solution, an ion-exchange membrane, a rod, a handle, and a measuring wire. The K.M.S. 265 203 Schwammaufsatz-Set includes a water container, a holder for attaching the water container to the electrode rod, and a dispenser.

The disadvantage of the portable reference electrode K.M.S. 265 010 Stabbezugselektrode with the K.M.S. 265 203 Schwammaufsatz-Set device is the bulkiness of the design and the need to move the container with water in the field measurement conditions, insufficient stability and labor-intensiveness of measurements in the field.

Disclosure of a utility model

The purpose of the claimed utility model is to reduce the influence of negative factors on the error of electrometric measurements in field conditions, by creating a portable copper sulfate reference electrode of a simplified design and ensuring a reduction in concentration polarization, electrical resistance of the ion-exchange membrane, and transient electrical resistance of the ion-exchange membrane upon contact with the ground.

This goal is achieved by equipping the portable copper sulfate reference electrode with a device for supplying mechanical energy through vibration. Vibration intensifies mass transfer and equalizes the concentration of the copper sulfate solution at the surface of the copper rod, membrane, and throughout the solution, reduces and stabilizes the electrical resistance of the ion-exchange membrane capillaries, increases and stabilizes the contact area of the ion-exchange membrane with the soil, and reduces the transient electrical resistance of the ion-exchange membrane when in contact with the soil.

This design of a portable copper sulfate reference electrode with vibration stabilization allows for a significant simplification of the prototype design, while the use of a different physical principle allows for an increase in the number of correctable factors that negatively influence measurement results.

The essence of the claimed utility model is that a device for supplying mechanical energy through vibration to a copper rod, a copper sulfate solution, and an ion-exchange membrane is built into a portable copper sulfate reference electrode, allowing for a reduction in error and minimization of the influence of negative factors on the measurement result.

The technical result achieved by implementing the claimed utility model consists of a simplified design, but in comparison with an analogue, a reduction in labor costs when conducting electrometric measurements, a reduction in error and an increase in the reliability of measurement results.

The implementation of the claimed utility model makes it possible to establish small-scale production of a reference electrode in the shortest possible time without the need for significant production capacity.

Brief description of drawings and other materials

The figure shows a functional diagram of a portable non-polarizing copper sulfate reference electrode with vibration stabilization.

Implementation of a utility model

The claimed portable non-polarizable copper sulfate reference electrode with vibration stabilization includes: a copper rod 1, a dielectric body 2, a saturated solution of copper sulfate 3, an ion-exchange membrane 4, a rod 5, a handle 6, power supply wires 7 and a measuring wire 8 for connecting to a potential meter, a power supply element 9, a button 10, an electric motor 11, a massive metal eccentric in the form of a sector of a disk 12 mounted on a rotating shaft of the electric motor. The electric motor 11 and the massive metal eccentric in the form of a sector of a disk 12 mounted on a rotating shaft of the electric motor form a device that creates vibration.

The claimed portable non-polarizing copper sulfate reference electrode with vibration stabilization operates as follows. The required electrometric measurement circuit is assembled in accordance with the regulatory documentation for electrometric measurements. The portable non-polarizing copper sulfate reference electrode with vibration stabilization is installed in the ground. After installing the electrode in the ground, button 10 is pressed. Vibration device 11, 12 is activated. Due to the fact that vibration device 11, 12 is rigidly mounted in rod 5, the mechanical energy of vibration is transferred to copper rod 1, dielectric housing 2, saturated copper sulfate solution 3, and ion-exchange membrane 4. This causes mixing of copper sulfate solution 3 and a decrease in concentration polarization. Wetting of the capillary-porous material of ion-exchange membrane 4 is enhanced, and its electrical resistance is reduced. The surface of ion-exchange membrane 4 "grinds" with the soil, increasing their contact area. Electrical contact between the membrane and the soil is stabilized. The contact resistance between the ion-exchange membrane and the soil decreases. The voltage drop across the contact resistance decreases, leading to stabilization and reduced error in electrochemical potential measurements.

The developed portable non-polarizing copper sulfate reference electrode with vibration stabilization represents an alternative to traditional, commercially available reference electrodes.

The advantage of a portable non-polarizing copper sulfate reference electrode with vibration stabilization, in contrast to its analogues, is more stable and reliable measurement results, regardless of the conditions of electrometric measurements.

Claims (1)

A portable copper sulfate reference electrode with vibration stabilization, comprising: a copper rod, a dielectric housing, a saturated solution of copper sulfate, an ion-exchange membrane, a rod, a handle, a measuring wire, characterized in that it is equipped with a device that creates vibration, consisting of an electric motor and a massive metal eccentric in the form of a disk sector mounted on a rotating shaft of the electric motor, power supply wires, a power supply element, a button.