Galvanic corrosion protection device for metal pipelines

Abstract

The invention discloses a metal pipeline galvanic corrosion protection device, which belongs to the technical field of pipeline equipment. A metal pipeline galvanic corrosion protection device, including a fixed seat, the output shaft of the motor A extends through the interior of the fixed seat to the inside of the circular cavity and is sleeved with the gear A, the rear side of the inner wall of the arc-shaped block is provided with a limiting groove, and the front side of the fixed seat There is a paint box, the upper end of the right side of the paint box is provided with an inlet, the upper middle of the paint box is provided with a pump body, the upper side of the pump body is provided with a nozzle, and the rear side of the outer wall of the hollow rotating column is provided with a ring rack A, and the gear A is connected to the ring The meshing connection of the rack A and the close fit between the structures enable the device to coat the outer wall of the metal pipe circumference by rotating, so that it can form a layer of isolation and protection on the outer wall, avoiding isolation by directly installing insulating bushings Insulation, the isolation and insulation method is too simple, and the electrolyte is a liquid with certain fluidity. After a long time of use, it will still make contact with the pipe and cause the galvanic corrosion of the pipeline.

Description

technical field [0001] The invention relates to the technical field of pipeline equipment, in particular to a metal pipeline galvanic corrosion protection device. Background technique [0002] Galvanic corrosion is also called dissimilar metal corrosion or contact corrosion, which refers to the phenomenon that when two materials with different electrochemical properties form a circuit with the surrounding environment medium, the corrosion rate of the metal with a relatively positive potential slows down, while the corrosion rate of a metal with a relatively negative potential accelerates. . The reason for this phenomenon is that there is a potential difference between the two materials, forming a macroscopic corrosion cell. As a common corrosion phenomenon, galvanic corrosion can induce or even accelerate the occurrence of stress corrosion, pitting corrosion, crevice corrosion, hydrogen embrittlement and other corrosion processes. Galvanic corrosion should meet the followi...

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Problems solved by technology

Although the device has many beneficial effects, there are still the following problems: the device is too simple to insulate and insulate by directly installing the insulating bushing, and the electrolyte is a liquid with certain fluidity, which will still make it contact after long-term use, and the effect is poor , in view of this, we propose a metal pipeline galvanic corrosion protection device

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