A production equipment for corrosion-resistant steel core aluminum stranded wire

Abstract

A production device for high-quality corrosion-resistant steel core aluminum stranded wire, comprising a frame stranding machine (1), an electrolyte tank 1 (2), a roller (3) and an electrolyte tank 2 (4) arranged in sequence from top to bottom. The frame stranding machine (1) is arranged vertically to strand an aluminum conductor (6) on a steel core (5). The electrolyte tank 1 (2) contains a cylindrical electrode 1 (7) and an electrolyte. The cylindrical electrode 1 (7) has openings at both ends and is placed vertically with the steel core (5) as an axis. The stranding part is located in the cylindrical electrode 1 (7). The production device for high-quality corrosion-resistant steel core aluminum stranded wire of the present invention places the frame stranding machine vertically and surrounds the stranding part with the cylindrical electrode 1, so that the distance between the steel core and the aluminum conductor and the cylindrical electrode 1 at the stranding part is roughly equal, and the steel core and the aluminum conductor at the stranding part are immersed in the electrolyte at the same depth, so that the ceramic film layer formed on the surface of the steel core and the aluminum conductor is more uniform, which can greatly improve the overall corrosion resistance of the steel core aluminum stranded wire.

Description

Technical Field

[0001] The invention relates to the field of overhead lines, and in particular to production equipment for high-quality corrosion-resistant steel-core aluminum stranded wires. Background Art

[0002] Patent application CN115938691A discloses a steel core aluminum stranded wire with corrosion resistance, the aluminum wire surface has a corrosion-resistant ceramic coating, but the steel core surface has no corrosion-resistant ceramic coating. Patent application CN115841887A discloses a method for preparing a corrosion-resistant overhead line, which first makes a single aluminum conductor and then twists the aluminum conductors to form an overhead line, and the production efficiency is not high. Patent CN118087000B discloses a production device for a similar corrosion-resistant steel core aluminum stranded wire, which first pre-coats an insulating layer on the surface of the steel core and then sprays electrolyte on the twisted part of the steel core aluminum stranded wire through a tubular electrode to simultaneously generate a ceramic coating on the steel core and the aluminum conductor surface, achieving a twisting and plating effect, greatly improving production efficiency, and the steel core and aluminum wire surfaces of the produced steel core aluminum stranded wire have corrosion-resistant ceramic coatings, which improves the overall corrosion resistance of the steel core aluminum stranded wire. However, in this tubular electrode spraying method, the tubular electrode is located on one side of the steel core aluminum stranded wire. The steel core and aluminum conductor near the tubular electrode have stronger electric field strength and are in contact with more electrolyte, so the thickness of the ceramic coating formed on their surface is greater than that on the side away from the tubular electrode. This results in uneven ceramic coating distributed throughout the steel core aluminum stranded wire, but the overall corrosion resistance of the steel core aluminum stranded wire depends on the corrosion resistance of its weakest point. Although this production method is very efficient, its corrosion resistance is poor. Summary of the invention

[0003] The purpose of the present invention is to provide a production device for high-quality corrosion-resistant steel core aluminum stranded wire, which improves the uniformity of the distribution of the corrosion-resistant ceramic coating on the surface of the steel core and the aluminum conductor without reducing the production efficiency so as to improve the overall corrosion resistance of the steel core aluminum stranded wire.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows:

[0005] A production device for high-quality corrosion-resistant steel core aluminum stranded wire, comprising a frame stranding machine, an electrolyte tank 1, a roller and an electrolyte tank 2 arranged in sequence from top to bottom; the frame stranding machine is arranged vertically, the steel core passes through the frame stranding machine from top to bottom, the surface of the steel core has a pre-coated insulating film layer, the frame stranding machine rotates around the steel core to strand the aluminum wire in the frame stranding machine on the steel core; the electrolyte 1 has a cylindrical electrode 1 and an electrolyte, the two ends of the cylindrical electrode 1 are open and the steel core is placed vertically, the cylindrical electrode 1 is immersed in the electrolyte, and the stranding part of the aluminum wire and the steel core is located at In the cylindrical electrode 1, a wiring hole is provided on the bottom surface of the electrolyte cell, and the twisted steel-core aluminum stranded wire passes through the bottom of the electrolyte cell 1 through the wiring hole and then turns to one side through a roller; the electrolyte cell 1 and the electrolyte cell 2 are connected through a reflux pipe, and the reflux pipe is provided with a pumping device, and the electrolyte in the electrolyte cell 1 flows into the electrolyte cell 2 below through the wiring hole, and the electrolyte flowing into the electrolyte cell 2 is pumped back to the electrolyte cell 1 through the reflux pipe; it also includes an oxidation power source, and the cylindrical electrode 1 and the steel-core aluminum stranded wire turned to one side are respectively connected to the oxidation power source.

[0006] During the oxidation treatment, the oxidation power supply and the pumping device are turned on, so that the corrosion-resistant ceramic coating is simultaneously formed on the steel core and the aluminum wire surface in the cylindrical electrode.

[0007] Furthermore, the pumping device is an electrolyte circulation system, and the electrolyte circulation system is provided with an exchange device, and the electrolyte circulation system is used to adjust the flow rate and temperature of the refluxed electrolyte.

[0008] Furthermore, the steel core aluminum stranded wire turned to one side is connected to an oxidation power source through a conductive copper wheel.

[0009] Furthermore, it also includes an electrolyte pool 3, which contains an electrolyte and a horizontally placed cylindrical electrode 2, the cylindrical electrode 2 is immersed in the electrolyte, the steel-core aluminum stranded wire turned to one side horizontally passes through the electrolyte pool 3 along the axis of the cylindrical electrode 2, and the cylindrical electrode 1 and the cylindrical electrode 2 are connected to an oxidation power source. The electrolyte pool 1, the cylindrical electrode 1, the electrolyte pool 3 and the cylindrical electrode 2 and the oxidation power source form a dual plating pool system.

[0010] Compared with the prior art, the beneficial technical effects of the present invention are:

[0011] The present invention provides a production device for high-quality corrosion-resistant steel core aluminum stranded wire, creatively places the frame stranding machine vertically, and surrounds the stranding part with a vertical cylindrical electrode 1, so that the distances between the steel core and the aluminum conductor at the stranding part and the cylindrical electrode 1 are roughly equal, the electric field strength is more uniform, and the steel core and the aluminum conductor at the stranding part are immersed in the electrolyte of the same depth, and the ceramic film layer generated at various places on the surface of the steel core and the aluminum conductor is more uniform. Compared with the existing similar production equipment (patent CN118087000B), the overall corrosion resistance of such steel core aluminum stranded wire with ceramic coating can be greatly improved without reducing the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a production device for high-quality corrosion-resistant steel-core aluminum stranded wire in Example 1 of the present invention.

[0013] Figure 2 It is a structural schematic diagram of a production device for high-quality corrosion-resistant steel-core aluminum stranded wire in the second embodiment of the present invention. DETAILED DESCRIPTION

[0014] The technical solution of the present invention will be described clearly and completely in conjunction with specific embodiments. The working principles of the pre-coated insulating film layer, electrolyte, oxidizing power source, and dual plating pool system involved are prior art, and specific reference may be made to the contents disclosed in patent CN118087000B for processing.

[0015] Embodiment 1

[0016] like Figure 1 As shown, a production device for high-quality corrosion-resistant steel core aluminum stranded wire comprises a frame stranding machine 1, an electrolyte tank 1 2, a roller 3 and an electrolyte tank 2 4 arranged in sequence from top to bottom. The frame stranding machine 1 is arranged vertically, and a steel core 5 passes through the frame stranding machine 1 from top to bottom. The surface of the steel core 5 has a pre-coated insulating film layer. The frame stranding machine 1 rotates around the steel core 5 to strand the aluminum conductor 6 in the frame stranding machine onto the steel core 5.

[0017] The electrolyte cell 2 has a cylindrical electrode 7 and electrolyte. The two ends of the cylindrical electrode 7 are open and placed vertically with the steel core 5 as the axis. The cylindrical electrode 7 is immersed in the electrolyte. The twisted part of the aluminum conductor 6 and the steel core 5 is located in the cylindrical electrode 7. The bottom surface of the electrolyte cell 2 has a routing hole 201. The twisted steel core aluminum stranded wire passes through the bottom of the electrolyte cell 2 through the routing hole 201 and then turns to one side through the roller 3. The electrolyte cell 2 and the electrolyte cell 2 4 are connected through a reflux pipe, and the reflux pipe is connected to the electrolyte circulation system. The electrolyte in the electrolyte cell 2 flows into the electrolyte cell 2 4 below through the routing hole 201, and the electrolyte flowing into the electrolyte cell 2 4 is pumped back to the electrolyte cell 2 through the reflux pipe. The steel core aluminum stranded wire tilts upward after turning to one side by the roller 3 to prevent the falling electrolyte from flowing to one side along the steel core aluminum stranded wire.

[0018] It also includes an oxidation power source. The cylindrical electrode 7 and the steel-core aluminum stranded wire turned to one side are respectively connected to the oxidation power source, and the steel-core aluminum stranded wire is connected to electricity through a conductive copper wheel 8.

[0019] Before oxidation treatment, the electrolyte circulation system is turned on first, and the electrolyte in the electrolyte cell 2 4 is pumped into the electrolyte cell 1 2. The electrolyte in the electrolyte cell 2 flows back into the electrolyte cell 2 4 through the gap between the steel core aluminum stranded wire and the wiring hole 201. The pumping amount of the electrolyte circulation system is greater than the outflow amount through the wiring hole 201, so that the electrolyte accumulates in the electrolyte cell 2. After the cylindrical electrode 1 7 is completely immersed in the electrolyte, the pumping flow of the electrolyte circulation system is adjusted so that the pumping amount is equal to the outflow amount, and the liquid level in the electrolyte cell 2 is maintained. Then, the oxidation power supply and the frame stranding machine 1 are turned on, and oxidation is performed while stranding, so that a corrosion-resistant ceramic coating is simultaneously generated on the surface of the steel core 5 and the aluminum conductor 6 at the stranding location.

[0020] Embodiment 2

[0021] like Figure 2 As shown, the difference between this embodiment and the first embodiment is that the production equipment of this embodiment further includes an electrolyte pool 3 9, the electrolyte pool 3 9 contains electrolyte and a horizontally placed cylindrical electrode 2 10, the cylindrical electrode 2 10 is immersed in the electrolyte, the steel core aluminum stranded wire turned to one side first tilts upward for a section, passes around the roller and turns horizontally, and then passes through the electrolyte pool 3 9 along the axis of the cylindrical electrode 2 10, and the cylindrical electrode 1 7 and the cylindrical electrode 2 10 are connected to the oxidation power supply. The electrolyte pool 1 2, the cylindrical electrode 1 7, the electrolyte pool 3 9 and the cylindrical electrode 2 10 and the oxidation power supply constitute a double plating pool system.

Claims

1. A production equipment for corrosion-resistant steel core aluminum stranded wire, characterized in that: It comprises a frame stranding machine (1), an electrolyte tank 1 (2), a roller (3) and an electrolyte tank 2 (4) which are arranged in sequence from top to bottom; The frame stranding machine (1) is arranged vertically, the steel core (5) passes through the frame stranding machine (1) from top to bottom, the surface of the steel core (5) has a pre-coated insulating film layer, and the frame stranding machine (1) rotates around the steel core (5) to strand the aluminum wire (6) in the frame stranding machine onto the steel core (5); The electrolyte tank (2) contains a cylindrical electrode (7) and an electrolyte. The cylindrical electrode (7) is open at both ends and is placed vertically with the steel core (5) as the axis. The cylindrical electrode (7) is immersed in the electrolyte. The twisted portion of the aluminum conductor (6) and the steel core (5) is located in the cylindrical electrode (7). The bottom surface of the electrolyte tank (2) contains a wiring hole (201). The twisted steel-core aluminum stranded wire passes through the bottom of the electrolyte tank (2) through the wiring hole (201) and then is turned to one side by a roller (3). The electrolyte cell one (2) and the electrolyte cell two (4) are connected via a reflux pipe, and the reflux pipe is provided with a pumping device, so that the electrolyte in the electrolyte cell one (2) flows into the electrolyte cell two (4) below through the wiring hole (201), and the electrolyte flowing into the electrolyte cell two (4) is pumped back into the electrolyte cell one (2) via the reflux pipe; It also includes an oxidation power source, and the cylindrical electrode 1 (7) and the steel-core aluminum stranded wire turned to one side are respectively connected to the oxidation power source.

2. The production equipment of a corrosion-resistant steel core aluminum stranded wire according to claim 1 is characterized in that: The pumping device is an electrolyte circulation system.

3. The production equipment of a corrosion-resistant steel core aluminum stranded wire according to claim 1, characterized in that: The steel core aluminum stranded wire turned to one side is connected to an oxidation power source through a conductive copper wheel (8).

4. The production equipment of a corrosion-resistant steel core aluminum stranded wire according to claim 1, characterized in that: It also includes an electrolyte pool three (9), which contains an electrolyte and a horizontally placed cylindrical electrode two (10), the cylindrical electrode two (10) is immersed in the electrolyte, and the steel-core aluminum stranded wire turned to one side horizontally passes through the electrolyte pool three (9) along the axis of the cylindrical electrode two (10), and the cylindrical electrode one (7) and the cylindrical electrode two (10) are connected to the oxidation power supply.

5. The production equipment of the corrosion-resistant steel core aluminum stranded wire according to claim 1 is characterized in that: The oxidation power source is a micro-arc oxidation power source or a thermo-electrochemical oxidation power source.

Images