CN115558970A

CN115558970A - Overhead line anti-corrosion coating equipment

Info

Publication number: CN115558970A
Application number: CN202211345877.5A
Authority: CN
Inventors: 雷厉; 李昊旻; 王连可; 张鸣鹤; 马冬影
Original assignee: Zhuji Sino Russian Joint Materials Laboratory
Current assignee: Zhuji Sino Russian Joint Materials Laboratory
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-03

Abstract

An overhead line anti-corrosion coating device comprises a power supply and two groups of oxidation systems, wherein each group of oxidation system comprises a tubular electrode, a liquid storage tank and a circulating pump, and electrolyte is arranged in the liquid storage tank. The upper part of the tubular electrode is connected with the liquid storage tank through a pipeline, and the circulating pump is positioned on the pipeline. The lower part of the tubular electrode faces to the overhead line, the upper part of the tubular electrode is provided with an opening, the liquid storage tank is positioned at the lower part of the tubular electrode, and the overhead line is positioned between the tubular electrode and the liquid storage tank. The two tubular electrodes are connected with a power supply through leads. When the overhead line passes through the lower parts of the two tubular electrodes, micro-arc oxidation/thermoelectric chemical oxidation reaction occurs, so that a ceramic coating is generated on the surface layer of the overhead line. The coating equipment provided by the invention has the advantages that the structure is simple, the arrangement is flexible, oxidation treatment sites can be flexibly arranged for coating an anti-corrosion coating during the production or the laying of the overhead line, the oxidation treatment process is greatly simplified, the overhead line can be efficiently coated, and the treatment cost can be greatly reduced.

Description

Overhead line anticorrosion coating equipment

Technical Field

The invention relates to the technical field of overhead lines, in particular to equipment for coating an anti-corrosion coating on an overhead line.

Background

Most of the overhead wires are formed by twisting bare aluminum wires, and these bare aluminum wires exposed to air are easily corroded. The existing overhead line is coated with anti-corrosive grease for corrosion prevention, but the anti-corrosive grease as an organic matter is easy to run off and degrade under the influence of rainwater, sunlight, dust and the like, and is difficult to remain on the surface of the overhead line for a long time. When the protection of the anti-corrosion grease is lost, the bare aluminum wire can be corroded, the bare aluminum wire on the outermost layer is corroded most easily, and the corrosion degree is deepest.

Patent CN2021116747753 discloses a thermoelectric chemical oxidation treatment device for conductor wire, wherein a lead is drawn by a drawing device and passed through two plating tanks, and the surface layer of the lead is thermally and electrochemically oxidized to form a kind of Al when passing through the electrolyte in the plating tanks ₂ O ₃ A corrosion-resistant ceramic coating as a main component. The corrosion-resistant ceramic coating is an inorganic coating, is not easy to be damaged by the influence of sunlight, dust and rainwater, and the protection effect of the corrosion-resistant ceramic coating can be accompanied with the whole service cycle of the overhead line.

After the overhead line is well twisted, the outer diameter can reach 10-24mm, the quality is large, straightening can be carried out by the thermoelectric chemical oxidation treatment device only through traction of a high-power heavy traction device, and then the steps of passing through a tensioner and winding and coiling are carried out again, so that the treatment efficiency is low and the production cost is high.

Disclosure of Invention

The invention aims to provide an overhead line anticorrosive coating device, which is used for simplifying the processing procedure of coating an overhead line anticorrosive coating, improving the efficiency and reducing the production cost.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

an overhead line anti-corrosion coating device comprises a micro-arc oxidation/thermoelectric chemical oxidation power supply and two groups of oxidation systems, wherein each group of oxidation system comprises a tubular electrode, a liquid storage tank and a circulating pump, and electrolyte is arranged in the liquid storage tank. In a group of oxidation systems, the upper part of the tubular electrode is connected with a liquid storage tank through a pipeline, the circulating pump is positioned on the pipeline, the lower part of the tubular electrode faces to an overhead line, the upper part of the liquid storage tank is opened, the liquid storage tank is positioned on the lower part of the tubular electrode, and the overhead line is positioned between the tubular electrode and the liquid storage tank. The tubular electrodes in the two groups of oxidation systems are respectively connected with a micro-arc oxidation/thermoelectric chemical oxidation power supply through leads. When the overhead line passes through the lower parts of the two tubular electrodes, micro-arc oxidation/thermoelectric chemical oxidation reaction occurs, so that a ceramic coating is generated on the surface layer of the overhead line.

Furthermore, the device also comprises two groups of mutually independent electrolyte cooling circulation systems, wherein the two groups of electrolyte cooling circulation systems are respectively positioned on the pipelines between the tubular electrodes and the liquid storage tanks in the two groups of oxidation systems, and the electrolyte cooling circulation systems are internally provided with circulating pumps and cooling systems. Preferably, the cooling system is a heat exchange cooler.

Furthermore, the device also comprises two insulating protective covers made of plastics, the lower parts of the tubular electrodes are positioned in the insulating protective covers, the lower parts of the insulating protective covers are opened, and overhead wires pass through the lower parts of the insulating protective covers. Preferably, the side wall of the lower part of the insulating protective cover is provided with symmetrical notches, and overhead wires pass through the symmetrical notches so as to further improve the sputtering prevention effect. Preferably, the lower end of the insulating protective cover extends into the liquid storage tank.

The air-blowing device further comprises an air blowing pipe and an air compressor, wherein the upper end of the air blowing pipe is connected with the air compressor, and the lower end of the air blowing pipe faces to the intersection of the overhead line and the insulating protective cover; the number of the air blowing pipes is more than 2, wherein two air blowing pipes are positioned between the two insulating protective covers and respectively face the intersection of the overhead line and the two insulating protective covers. Preferably, the number of the air blowing pipes is 4, and two sides of the two insulation protective covers are respectively provided with one air blowing pipe.

Compared with the prior art, the invention has the beneficial technical effects that:

the coating equipment provided by the invention has the advantages that the structure is simple, the arrangement is flexible, oxidation treatment sites can be flexibly arranged for coating an anti-corrosion coating during the production or the laying of the overhead line, the oxidation treatment process is greatly simplified, the overhead line can be efficiently coated, and the treatment cost can be greatly reduced.

Drawings

FIG. 1 is a schematic view of the structure of a coating apparatus in example 1 of the present invention;

FIG. 2 is a schematic view of the construction of a coating apparatus in example 2 of the present invention;

FIG. 3 is a schematic view showing the position of a notch of an insulating shield according to embodiment 2 of the present invention;

FIG. 4 is a schematic view showing the construction of a coating apparatus in example 3 of the present invention.

The specific implementation mode is as follows:

the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in figure 1, the anti-corrosion coating equipment for the overhead line comprises two groups of oxidation systems and a set of micro-arc oxidation/thermal electrochemical oxidation power supply, wherein each group of oxidation system comprises a tubular electrode 1, a liquid storage tank 2 and a circulating pump. The liquid storage tank 2 is provided with electrolyte therein, and the lower part thereof is provided with a water outlet pipe 201. In a group of oxidation system, the upper portion of tubular electrode 1 is connected with liquid storage tank 2 through the pipeline, the circulating pump is located the pipeline, tubular electrode 1 lower part is towards

overhead line

3, 2 upper portions of liquid storage tank open, liquid storage tank 2 is located tubular electrode 1 lower part, overhead line 3 is located between tubular electrode 1 and liquid storage tank 2. The tubular electrodes in the two groups of oxidation systems are respectively connected with a micro-arc oxidation/thermoelectric chemical oxidation power supply through leads.

When the oxidation treatment is carried out, the liquid storage tank 2 is placed below the overhead line 3, the tubular electrode 1 is fixed above the overhead line 3, the circulating pump and the oxidation power supply are started, the electrolyte in the liquid storage tank 2 is sprayed onto the overhead line 3 from the tubular electrode 1, and the overhead line between the two tubular electrodes is used as a conductor to be communicated with the electrolyte on the two sides, so that the oxidation power supply, the tubular electrode, the electrolyte and the overhead line form a complete loop. When the overhead wire 3 passes through the lower parts of the two tubular electrodes, micro-arc oxidation/thermoelectric chemical oxidation reaction occurs, so that a ceramic coating is generated on the surface layer of the overhead wire 3.

The device also comprises two groups of mutually independent electrolyte cooling circulation systems, wherein the two groups of electrolyte cooling circulation systems are respectively positioned on pipelines between the tubular electrode 1 and the liquid storage tank 2 in the two groups of oxidation systems, and a circulating pump and a heat exchange cooler are arranged in the electrolyte cooling circulation systems. The micro-arc oxidation/thermoelectric chemical oxidation reaction can generate a large amount of heat to raise the temperature of the electrolyte, the temperature of the electrolyte is an important factor influencing the thickness and uniformity of the ceramic membrane, and the temperature change of the electrolyte is maintained in a certain interval through the heat exchange cooler.

The coating equipment has simple structure, and can flexibly arrange oxidation treatment sites for coating the anti-corrosion coating during production or laying of the overhead line. For example, between a tension machine and a winding system in an overhead line production workshop, or between a traction device and a tension machine during erection. The coating equipment of the invention can greatly simplify the oxidation treatment process, can effectively coat the overhead line and can greatly reduce the treatment cost.

Example 2

As shown in fig. 2 and 3, the present embodiment is different from embodiment 1 in that two insulating protective covers 4 are further included, and the material of the insulating protective covers is plastic (PP, PVC, etc.). The lower part of the tubular electrode 1 is positioned in an insulating protective cover 4, the lower part of the insulating protective cover 4 is opened, and the overhead wire 3 passes through the lower part of the insulating protective cover 4. The tubular electrode 1 is wrapped by an insulating shield 4 to prevent accidental touch. Meanwhile, the insulating protective cover 4 also plays a role of preventing the electrolyte sprayed on the overhead wire 3 from being sputtered all around.

Preferably, the sidewall of the lower part of the insulating protective cover 4 is provided with symmetrical notches 401, the lower end of the insulating protective cover 4 extends into the liquid storage tank 2 to further improve the anti-sputtering effect, and the overhead line 3 passes through the symmetrical notches.

Facility example 3

As shown in fig. 4, this embodiment is different from embodiment 2 in that it further includes four air blowing pipes 5 and an air compressor, the upper ends of the air blowing pipes 5 are connected to the air compressor, and the lower ends of the air blowing pipes 5 face the intersection of the overhead line 3 and the insulating protective cover 4. The number of the air blowing pipes 5 is more than 2, 4 are optimal, and two sides of the two insulating protective covers 4 are respectively provided with one air blowing pipe 5. Two of the blowing pipes 5 are positioned between the two insulating protective covers 6, and the two blowing pipes 5 respectively face the intersection of the overhead line 3 and the two insulating protective covers 4. Because the overhead wire 3 successively passes through the two insulation protective covers 4, the electrolyte brought out by the overhead wire 3 passing through the insulation protective covers 4 is blown into the liquid storage tank 2 through the blowing pipe 5, so that the contact of the electrolyte in the two oxidation systems is reduced to the maximum extent. Meanwhile, the air blowing pipe 5 can also blow the electrolyte sprayed from the notch into the liquid storage tank 2.

Claims

1. The coating equipment for the anti-corrosion coating of the overhead line is characterized by comprising a micro-arc oxidation/thermoelectric chemical oxidation power supply and two groups of oxidation systems, wherein each group of oxidation system comprises a tubular electrode, a liquid storage tank and a circulating pump, and electrolyte is arranged in the liquid storage tank;

in a group of oxidation systems, the upper part of a tubular electrode is connected with a liquid storage tank through a pipeline, a circulating pump is positioned on the pipeline, the lower part of the tubular electrode faces an overhead line, the upper part of the liquid storage tank is provided with an opening, the liquid storage tank is positioned at the lower part of the tubular electrode, and the overhead line is positioned between the tubular electrode and the liquid storage tank;

tubular electrodes in the two groups of oxidation systems are respectively connected with a micro-arc oxidation/thermoelectric chemical oxidation power supply through leads;

when the overhead line passes through the lower parts of the two tubular electrodes, micro-arc oxidation/thermoelectric chemical oxidation reaction occurs, so that a ceramic coating is generated on the surface layer of the overhead line.

2. The overhead line anticorrosion coating apparatus of claim 1, further comprising two independent sets of electrolyte cooling circulation systems, wherein the two sets of electrolyte cooling circulation systems are respectively located on the pipeline between the tubular electrode and the liquid storage tank in the two oxidation systems, and the electrolyte cooling circulation systems comprise a circulation pump and a cooling system.

3. An overhead line anticorrosion coating application apparatus as claimed in claim 2, wherein said cooling system is a heat exchange cooler.

4. An overhead line anti-corrosion coating application apparatus according to claim 1, further comprising two insulation shields, the lower portion of the tubular electrode being located within the insulation shields, the lower portion of the insulation shields being open, the overhead line passing through the lower portion of the insulation shields.

5. An overhead line anti-corrosion coating application apparatus according to claim 4, wherein the insulation shield lower side wall has symmetrical notches through which the overhead line passes.

6. An overhead line anticorrosion coating application apparatus as claimed in claim 5, wherein the lower end of the insulating shield is located in the reservoir.

7. The overhead line anti-corrosion coating device according to claim 5, further comprising an air blowing pipe and an air compressor, wherein the upper end of the air blowing pipe is connected with the air compressor, and the lower end of the air blowing pipe faces to the intersection of the overhead line and the insulating protective cover; the number of the air blowing pipes is more than 2, wherein two air blowing pipes are positioned between the two insulating protective covers and respectively face the intersection of the overhead line and the two insulating protective covers.

8. The overhead line anticorrosion coating applying apparatus of claim 7, wherein the number of said gas blowing pipes is 4, one gas blowing pipe being provided at each side of each insulation shield.